SCP2207VMU - Freescale Semiconductor

Freescale Semiconductor

Data Sheet: Product Preview

Document Number: SCP220x

Rev. 2.1, 06/2015

SCP220x

1 Introduction

The SCP220x is a family of highly-programmable Image

Cognition Processors (ICP) enabling imaging and video

applications for automotive smart cameras, video

surveillance cameras and consumer devices such as

personal media players. The ICPs of the SCP220x family

are programmable system-on-chip (SoC) featuring

CogniVue’s patented APEX™ technology providing high

computing performance at low power in a small package

size.

The SCP220x family comprises:

• SCP2201 – Equipped with 128 Mbit (16 MB) of

stacked Mobile DDR SDRAM in package

• SCP2207 – Equipped with 512 Mbit (64 MB) of

stacked Mobile DDR SDRAM in package

SCP220x ICP Family

Data Sheet

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.1 The SCP220x function blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.2 SCP220x Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2 SCP220x Architecture Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2.1 Voltage islands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Buses and DMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

2.4 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

3 System Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.1 Core and I/O Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2 PLL and Timing Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

3.3 Clock Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

3.4 External Memory Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

3.5 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

3.6 Boot-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.7 Low Power Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4 Interconnect and Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.1 NAND Flash Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

4.2 UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.3 SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.4 Sensor Interface (SIF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

4.5 Display Sub-System (DSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

4.6 USB 2.0 HIGH SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

4.7 Audio Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4.8 Media Storage MMC and MMCPlus blocks (compatible SD/SDHC) . 42

4.9 I2C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.10 Pulse Width Modulated Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

4.11 KeyPad Scan Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

4.12 GPIOs and Alternate Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

4.13 Production Test and System Signals . . . . . . . . . . . . . . . . . . . . . . . . . 61

5 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

5.1 Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

5.2 Clock Configuration Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

5.3 PAD and I/O registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

5.4 Reset and Clock Gating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

5.5 Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

5.6 Memory Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

5.7 NAND Interface Registers Description. . . . . . . . . . . . . . . . . . . . . . . .95

5.8 UART Control Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

5.9 SPI Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

5.10 Audio Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126

5.11 MMC/SD Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

5.12 MMCPlus Control Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

5.13 I2C Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

5.14 PWM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158

5.15 KeyScan Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

5.16 GPIO Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165

6 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

6.1 SCP2201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .168

6.2 SCP2207 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169

6.3 SCP220x Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170

7 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

7.1 Absolute Maximum Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

7.2 Recommended Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . .180

7.3 Thermal Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181

7.4 DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181

8 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183

SCP220x ICP Family, Rev.2.1

Introduction

Freescale Semiconductor2

1.1 The SCP220x function blocks

Figure 1. SCP220x Image Cognition Processors

1.2 SCP220x Features

1.2.1 SCP220x General Features

CogniVue APEX Processor – programmable 34Billion-Operations per second Vision Processor with patented

massively parallel Array Processor Unit (APU) with 96 Computing Units (CUs) with dedicated memory, discreet

RISC processor, H/W acceleration blocks, wide-bandwidth stream DMAs and internal 64-bit data buses

ARM926EJ-S™ RISC processor with 16 KB of instruction cache (I-cache) and 16 KB of data cache (D-cache)

Multiple power domains for different peripheral IOs

1.2.2 Interconnect and Communication

1.2.2.1 Video Processing

Fully-programmable Array Processor (APEX) for running video/image processing algorithms

Video codecs support diverse resolutions at 30 fps with 4 Mbps maximum bitrate

Supported video decoding standards:

MPEG-4 Simple Profile and Advanced Simple Profile supports 720x480 at 30 fps

For other standards consult factory

Supported video encoding standard is MPEG-4 Simple Profile, 720x480 at 30 fps

Camera

Sensor

Interface

Display

Interface

TV Out

I2S / AC’97

I2CUART PWM GPIO

USB 2.0

OTG

NAND or

MoviNAND

Interface

MicroSD/

SDHC

KeyPad

SPI

Master/

Slave

Mobile DDR SDRAM

(stacked)

Memory Controller

Power Manager

APEX Core

Multi

Channel

DMA Stream DMA

Sequencer

RISC

Array Controller Processor

CMEM

CUCUCUCUCUCUCUCUCUCUCUCUCUCU CUCUCUCUCU

APU (96 CU + 96 CMEM)

SCP220x

Main Processor - ARM9

...

Introduction

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 3

1.2.2.2 Audio Processing

Directly connects to I2S or AC97 compliant audio device

1.2.2.3 Graphics

True-color (24 bits per pixel) processing

2D graphics functions including: Bitblt, overlay, pixel-based alpha-blending, rotation, scaling, color space conversion,

color depth expansion and reduction

1.2.2.4 Image Sensor Interface

Sensor Interface (SIF) supports 10-bit input, 8-bit YUV datapath up to 10 M-pixel resolution

Integrated YUV image enhancement functions such as scale-down

1.2.2.5 Display Sub-System

Independent dual output, one digital, one analog

Digital:

• LCD interface supports both TFT and buffered (CPU) LCDs

• Supports up to four CPU-like devices (for example dual 8/9/16/18bit LCD modules and two other devices

with CPU-like interfaces) or supports up to WVGA TFT LCD up to 24 bits/pixel

• ITU-R 601/656 compatible digital video output

Analog: Integrated 10-bit DAC for analog composite video output to TV (PAL or NTSC)

1.2.2.6 USB 2.0 High Speed Controller

USB 2.0 HIGH SPEED compliant

USB 2.0 PHY integrated on-chip

USB 2.0 On-The-Go

1.2.2.7 Audio Interface

I2S and AC97 compliant Audio Interface

1.2.2.8 Media Storage Interface

Supports SD/SDHC removable memory cards

Compatible MMC Plus Interface

Supports 8-bit NAND flash devices

Supports FAT-16 and FAT-32 file system with long name support and international characters

1.2.2.9 Serial Interfaces

Two UART (1x 4-pin, 1x 2-pin) interfaces and two SPIs

SCP220x ICP Family, Rev.2.1

SCP220x Architecture Overview

Freescale Semiconductor4

1.2.2.10 Other Interfaces

General purpose I/O (GPIO) – selectable as alternative functions for various interface pins

Two PWM (Pulse width modulated) outputs with programmable frequency and duty cycle

JTAG test and debugging interface for the ARM926EJ-S processor

1.2.3 Reference Input Clock

Input clocks:

• Clocks supplied by either a crystal or oscillator

• 10-30 MHz (13 MHz, 19.5 MHz, 24 MHz or 27 MHz suggested).

5 on-chip PLLs generate clocks for system, array processor, display interface, other interfaces and memory

Programmable internal clock frequencies

1.2.4 Boot-Up Options

Boot from either serial SPI or NAND Flash

1.2.5 Integrated Memory

SCP2201 has 128 Mbit DDR SDRAM integrated in package

SCP2207 has 512 Mbit DDR SDRAM integrated in package

1.2.6 Package

SCP2201 and SCP2207 are both used in the 236 MAPBGA package (9 x 9 x 1.24 mm).

1.2.7 POWER Supply

1.0V core and 3.0V I/O power (1.8V or 3.0V Sensor I/O power)

1.8V memory power supply

3.0V PLL power supply

3.3V supplies for USB and internal DAC

Multiple power domain within the core for power management

1.2.8 Ambient Operating Temperature

SCP2201 and SCP2207 chips operate between -40°C to +105°C, Automotive Qualified

2 SCP220x Architecture Overview

The SCP220x are system-on-chip offering a large selection of computation and communication blocks in a single

small form factor chip. The internal relationship between blocks within the chips can be represented by the following

figure:

SCP220x Architecture Overview

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 5

Figure 2. SCP220x Internal Architecture

2.1 Voltage islands

There are two voltage islands offering capabilities to lower power consumption when intensive computation is not

required. The chip can boot in one or the other mode, through external configuration (see 3.6.2, Boot-up

configuration), or can be switched by software. It is also possible to turn some blocks off for further power reduction

(see 3.7, Low Power Configurations).

2.2 Blocks

2.2.1 APEX

APEX is a programmable Vision Processor capable of 34 Billion-Operations per second.

APEX is composed of:

• with patented massively parallel Array Processor Unit (APU) itself made of 96 Computing Units (CUs) with

dedicated memory, wide-bandwidth stream DMAs and internal 64-bit data buses

• discreet RISC processor

• H/W acceleration blocks

APEX is a Single Instruction Multiple Data (SIMD) type of parallel processor. It is normally programmed in a

proprietary SIMD Engine Language (SEL) to generate APU kernels. Custom APU kernels can be written with the

Memory

Controller

.........

.....................

Memory

Controller

Memory

Controller

Stacked

SDRAM

JTAG

Controller

Reset

ARM9

Bridges

Multi-DMA

USB

SIF

AXI Fabric (64-bit)

Bridges Interrupt

NAND

Crypto

MMC

MMC plus

APB

Bridge

Low Power

Audio/Video

Voltage Domain

M/S

Master

Slave

Master/Slave

SCP2201/07 specific

IC Core

MP2TS

Controller

Boot

Loader

APB (32-bit)

M/S

M/SS

M/S

Smart

Card

GPIO Key

Pad PWI PWM

UART RTC Audio I2C

M/S

DSS

SPI

AHB 1 (32-bit)

Voltage Domain

AHB 2 (32-bit)

Codec HW

Accerators

RISC

APU

96 CU+CMEM

APEX

.....

SCP220x ICP Family, Rev.2.1

SCP220x Architecture Overview

Freescale Semiconductor6

additional APEX toolkit. Standard and custom kernels can be combined with the automated APEX usage

optimization tool ACF (APEX Core Framework).

APEX is then only used through supplied SDK, and no direct register accesses are required.

For advanced optimization needs, contact factory.

2.2.2 ARM926EJ-S RISC processor

The chip uses an ARM9 series as its main processor. It is a ARM926EJ-S™ RISC processor with 16 KB of

instruction cache (I-cache) and 16 KB of data cache (D-cache).

All the software runs on this processor and it sets up all the other blocks including the APEX.

Operating Systems supported:

• Nucleus, embedded Real Time Operating System.

2.2.3 Reserved Use Blocks

We reserve the use of several blocks in the chip: Crypto, MP2TS.

2.2.4 Interconnect and Communication Blocks

Detailed description of the blocks can be found in 4, Interconnect and Communication.

2.3 Buses and DMA

There are four main buses in the chip:

• AXI Fabric (64-bit)

• AHB 1 and AHB 2 (both 32-bit)

• APB (32-bit)

2.3.1 AXI Fabric

The AXI fabric (Advanced eXtensible Interface) provides high performance data transfers. It is linked to the use of

the APEX and so it is not recommended to access it directly. AXI provides an isolation from secondary data transfers

from peripherals and offers maximized performance on the main data movements from and to memory, image input

and output.

For your information, AXI provides a partial connectivity between the connected masters and slaves. The following

table illustrates what slaves each master can access. An “x” indicates connectivity between the master and slave.

Table 1. AXI Master/Slave Connectivity

apb3 Memory

Controller

AHB 1

(data) APEX APEX

CMEM SIF

S1 S2 S3 S4 S5 S6

AHB 1 (primary data) M1 x x x

USB M2 x x

AHB 1 (instructions) M3 x x

[reserved] M4 x x x

SCP220x Architecture Overview

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 7

2.3.2 AHB

There are two AHB (Advanced High-performance Bus) in the Chip. The first is the link between all the blocks. The

second is a dedicated bus for video codec operations.

2.3.3 APB

APB (Advanced Peripheral Bus) provides connectivity to a large number of relatively slow peripheral interfaces

blocs.

2.3.4 DMAs

There is an extensive number of DMAs (Direct Memory Access) in the chip. They play an important role in reaching

high computing performance in video/image processing.

In general, the DMAs are handled directly through the SDK.

2.4 Pin Configuration

The SCP220x are designed to be small chip and so have constrains on the number of pins available. To offer

maximum flexibility, the pins can have multiple functions selectable via software.

At most, a pin has a default function, a gpio use and an alternate function.

Also, the pin can have an internal Pull-Up (PU) or Pull-Down (PD) capability that could be activated by default.

Furthermore, the pin may have a direction and a configurable strength.

To illustrate, here is an example for the pin named audio_fsr.

4.12.1, GPIO and Alternate Function List tells us:

• the main function is audio_fsr (its name)

• if using as gpio it is the line 18

• the alternate function is pwm2_out

• the pin can have an internal Pull-Down

• the PAD type is A

• the power domain AUVDD

6.3, SCP220x Pinout tells us:

[reserved] M5 x x

DSS Bitblt M6 x x x x

DSS Bitblt_mini M7 x x

AHB 1 (secondary data) M8 x x x

GPIO Pin Alternate Power PAD Type PAD Resistor/Default

gpio18 audio_fsr_p pwm2_out AUVDD A PD/none

Table 1. AXI Master/Slave Connectivity

SCP220x ICP Family, Rev.2.1

System Design Considerations

Freescale Semiconductor8

• the pin belongs to the AUDIO power domain

• the pin is capable of being an input or and output (bi-directional)

• the pad strength can be configured for 2 mA or for 4 mA

• the pin does NOT have its Pull-Down activated

• the pin is at position M9 on SCP2201 and SCP2207

A pin is configured as gpio when the corresponding gpio enable bit is active.

A pin is configured as the alternate function when the gpio enable bit is inactive and that the alternate enable bit is

active.

So a pin is configured as the primary function when the gpio enable bit is inactive and that the alternate enable bit

is also inactive.

See 4.12.1, GPIO and Alternate Function List for details.

Note: most pins will be in tri-state during and after reset. The pins will start their primary function during the boot.

3 System Design Considerations

3.1 Core and I/O Power

The SCP220x are low power system-on-chip with a power consumption generally under <250 mW (active image

processing with APEX).

They offer advanced power consumption reduction options see 3.7, Low Power Configurations.

In any case, all power need to be present at all times even if the chip is in power saving mode, undefined behavior

may happen if some powers are not present.

The IO supply allows (3.0 V DC ± 10%).

The Sensor Interface (SIF) allows for 3.0VDC ± 10%, or 1.8VDC -5%, +10%.

The table below provides the SCP220x pin information for core and I/O power.

Pin Name Power Domain PAD Type Default PU/PD SCP2201/0

7 Ball

audio_fsr AUDIO Bi-dir. 2 mA / 4 mA none M9

Table 2. SCP220x Power Supply

Power Supply Pin Names Pin Description

1.0 V VDD_CORE Power supply for IC core

VDD_LP Power supply for low power audio/video circuitry

3.0 V VDDA_PLL Analog supply voltage for PLL

* VSSA_PLL PLL power return (DO NOT CONNECT TO GROUND)

1.8 V VDD_SDRAM SDRAM core power

3.3 V VDD_USB Power supply for USB

VDDA_DAC Analog supply voltage for internal DAC

System Design Considerations

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 9

3.0 V or 1.8V VDD_SENSOR IO supply for Sensor Interface block and I2C

3.0 V VDD_OSC Power supply for crystal pad

VDD_SCCARD IO supply for Smart Card Interface

VDD_GPIO IO supply for GPIOs and KeyScan

VDD_DIP IO supply for DIP block

VDD_MISCIF IO supply for MP2TS, UART, SPI, and JTAG interfaces.

VDD_SDMMC IO supply for SD/SDHC/MMC Interface

VDD_AUDIO IO supply for Audio Interface block

VDD_NAND IO supply for NAND Interface block

GND VSS Common ground

VSSA_DAC Ground for internal analog DAC

VSS_USB Ground for USB

VSS_OSC Ground for crystal pad

* See Figure 4 for VSSA_PLL connectivity

Table 2. SCP220x Power Supply

SCP220x ICP Family, Rev.2.1

System Design Considerations

Freescale Semiconductor10

Figure 3. Powering the SCP220x

3.2 PLL and Timing Generation

The timing generation block provides and manages the clocks required by the internal logic and IP blocks. The

clocks are produced from internal PLLs. An external crystal oscillator or clock provides the input clock to the PLLs.

The following figure shows the connection between a crystal oscillator and the SCP220x. If the clock source is an

oscillator, the clock output signals (VDDA_PLL, VSSA_PLL) are not connected.

System Design Considerations

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 11

Figure 4. Crystal Connected to SCP220x

The input clock drives the five internal PLLs:

• SYS_PLL: System

• AP_PLL: Array Processor Unit

• DIP_PLL: Display Interface Port

• IF_PLL: Interfaces

• MEM_PLL: Memory

See 3.3, Clock Configuration for more details about the PLLs.

The SCP220x has different level of clock controls depending on the input oscillator or clock frequency:

• Input is 24 MHz: this is the default, all the clocks are set automatically, no external clock setting

• Input is 13 MHz, 19.2 MHz or 27 MHz: this is a pre-set, all clocks are set automatically through

• an external clock setting, see 3.6.2, Boot-up configuration

• Input is between 10 MHz and 30 MHz: this is a custom clock setting and so an external clock setting should

be chosen and then all the PLLs and clock configuration need to be managed, see 3.3, Clock Configuration

and then 5.2, Clock Configuration Registers.

Figure 5. Input Clock Timing

Table 3. Input Clock Timing

Parameter Symbol Min. Typ. Max. Unit

Input clock period t2 10 30 MHz

Input clock rise time t3 4 ns

Input clock fall time t4 4 ns

Input clock duty cycle 40 50 60 %

xtal

3.0 V

100 ohm

SCP220x

100 nf100 µF

15 pf

10 - 30 MHz

1M ohm

SYS_PLL

AP_PLL

DIP_PLL

IF_PLL

MEM_PLL

VDDA_PLL

VSSA_PLL

clkout

clkin

(PLL return)

Clkin

SCP220x ICP Family, Rev.2.1

System Design Considerations

Freescale Semiconductor12

3.3 Clock Configuration

3.3.1 PLL configuration

The SCP220x has five internal PLLs as clock sources; all have the input reference clock as input:

• SYS_PLL: System

• AP_PLL: Array Processor Unit

• DIP_PLL: Display Interface Port

• IF_PLL: Interfaces

• MEM_PLL: Memory

These five configurable internal clock sources have three configurable aspects:

• PLL output frequency

• PLL clock source for divider

• Divider value

Figure 6. PLL Programming Parameters

Each PLL can be configured to a wide range of output frequencies based on its NF, NR and NO settings, where:

• NF (8-bit) ranges from 0 to 255

• NR (5-bit) ranges from 0 to 31

• NO (3-bit) ranges from 0 to 7; 2NO values: 1, 2, 4, 8, 16, 32, 64, 128

The PLL output frequency is derived from the following equation:

fOUT = (2 * fIN * (NF+1)) / (2NO * (NR+1))

where fIN is the input clock frequency. The following constraints must be met when deriving fPLLOUT.

• fIN = input frequency must meet 10 Mhz < fIN < 30 Mhz

• fREF = comparison frequency = fIN / (NR+1) must meet 10 Mhz < fREF < 30 Mhz

• fVCO = VCO frequency = (2 * fIN * (NF+1)) / (NR+1) must meet 1000 Mhz < fVCO < 2000 Mhz

• fOUT = output frequency must meet 20 Mhz < fOUT < 1000 Mhz

3.3.2 Configuring the clocks

There are two classes of clocks:

• The system clocks (cmem_clk, ac_clk, arm_clk, sys_clk, mem_clk2x, mem_clk) that have extra hardware

controls so that changes are managed and they take default value from boot-up configuration; see 3.3.2.1,

System Clocks

• The peripherals clocks are unmanaged. See 3.3.2.2, Peripheral Clocks

The PLL power-up default settings are controlled by either the recommended boot-up configuration (see 3.6.2,

Boot-up configuration) or software programmable registers (advanced use only).

PLLOUT

RESET

IN /NR

/NF

/2NO

PLL

VCO

REF

RESET

System Design Considerations

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 13

The SYS_PLL and AP_PLL settings are applied to the PLL when the appropriate configuration bit is set in the clock

update register. The PLL has a “lock” time after the settings are applied. During this lock time, the timing_gen block

will glitchlessly switch the ARM926EJ-S processor and system clocks. The “lock” time is approximately 520 input

clock periods. It should be noted that if only the “NO” setting is changed the lock period is much shorter (9-10 input

clock periods).

The IF_PLL, DIP_PLL and MEM_PLL do not have any hardware ensuring clean transition. The appropriate software

clock gating must be activated before updating these PLLs.

The configuration of the ARM926EJ-S processor and system clocks is controlled by hardware mechanisms that are

initiated by a software “kick”, whereas, the AP and peripheral clock configurations do not have any hardware control

mechanisms. Software must manage all aspects of the clock configuration for the AP and peripherals.

The registers are described at 5.2, Clock Configuration Registers.

3.3.2.1 System Clocks

Three aspects of the ARM926EJ-S processor and system clocking can be individually updated:

• The PLL configuration.

• The output divider for the PLL.

• The PLL to be used for the clock generation.

This allows a lot of flexibility during the overall clock configuration such as:

• Using the other PLL while one PLL is locking. This prevents a switch over to the external reference clock

while the PLL is locking and may be required for performance reasons in some applications.

• Using a common PLL for both the system and AP so that one of the PLLs can be powered down for current

savings.

Care should be taken in the order of the configurations such that an invalid frequency is not generated for the clock

domain.

The figure below shows the system clocks diagram:

SCP220x ICP Family, Rev.2.1

System Design Considerations

Freescale Semiconductor14

Figure 7. System Clocks

After reset, the system clocks are 96 MHz if the boot-up configuration matches the oscillator or crystal base

frequency. DS-10163-00-08 32/234

NOTE

The software bootloader can change the clocks settings but it is important to know that the System initialization

(Operating System and hardware subsystems) resets the clock setting as well.

There are three types of clock dividers:

• The integer divider where is clock is divided by a integer value from 1 to 64. Shown as „/1-64. blocks in

diagram

• Fixed divider by 2, shown as ‘/2’. block in diagram

• Multiple choice dividers where clock is divider by one of the choice offered. The diagram shows these blocks

by their list of choices such as: ‘/4, /3, /2, /1’.

To modify the value of SYS_PLL, AP_PLL, corresponding multiplexer and divider, it is required to use the Clock

Update register to ensure proper transition, see.

NOTE

For advanced power saving mode, it is possible to gate clocks via the CG blocks. However, because of the reserved

multiplexer (memory used with synchronized clock to the ARM926EJ-S processor or from independent clock), the

mem_clk_gate should not be used.

3.3.2.2 Peripheral Clocks

There are five peripheral reference clocks:

• if_ref_clock: interfaces reference clock

SYS_PLL

AP_PLL

IF_PLL

DIP_PLL

ap_ref_clk_sel1

/12, /10, /8,

/6, /4, /2

ap_clk_gate1pll_divide4

1-64

arm_clk_div2

/12, /10, /8,

/6, /4, /2

arm_clk2_div2

/12, /10, /8,

/6, /4, /2

mem_clk_div3

SYS_PLL

AP_PLL

pll_sel2

/4, /3, /2, /1

1 Interface PLL Select Register

sys_clk_div2

/4, /3, /2, /1

arm2_clk_en_div2

timing_gen

cmem_clk

ac_clk

arm_clk

sys_clk

arm2_clk

mem_clk2x

mem_clk

MEM_PLL

SYS_PLL

AP_PLL

IF_PLL

DIP_PLL

mem_ref_clk_sel1

mem_clk_gate1

pll_divide5

1-64

MEM_PLL

2 System Clock Configuration Register

3 AP Clock Configuration Register

4 AP PLL divide Register

5 MEM PLL divide Register

6 sys2_clk should match sys_clk

....... State after Reset

sys2_clk6

.............

........

.........

System Design Considerations

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 15

• xga_ref_clock: digital display reference clock

• sif_ref_clock: sensor interface reference clock

• usb_ref_clock: USB (Universal Serial Bus) reference clock

• tvout_ref_clock: analog display reference clock

Figure 8. Peripherals Clocks

This if_ref_clk is used as a clock source for the following interfaces so that their external timing is unchanged when

the system clock frequency is adjusted.

• mmc. This PLL clock is used to drive the MMC clock generator. The MMC clock generator has its own

configurable software divider. The target frequency for the MMC clock has a maximum of 20-25 Mhz so the

PLL should be programmed for twice that frequency as a minimum.

• uart. The PLL clock is used in the baud rate generator and front end serializer/de-serializer.

• spi. This PLL is used to drive the SPI clock generator and the SPI frontend interface.

• Audio. This PLL clock is the clock source for the NCO in the audio block. The NCO is used to generate the

audio master clock. The audio master clock or a clock source connected to the master clock input is used

to derive the audio bit clocks and frame clocks. The NCO operates best at higher frequencies, so a 96 Mhz

setting is best for this application.

• OS timer. This PLL clock is the clock source for the timer down counter. The timer has its own configurable

divider so the PLL clock frequency for this application is very flexible. RTC. This PLL clock is the clock source

for the NCO in the RTC timer. The NCO operates best at higher frequencies, so a 96 Mhz setting is best for

this application.

RTC. This PLL clock is the clock source for the NCO in the RTC timer. The NCO operates best at higher frequencies,

so a 96 Mhz setting is best for this application.

3.3.2.3 Clock Restrictions

System Clocking Restrictions:

• Maximum ARM926EJ-S processor clock is 347.5 Mhz.

• Maximum system clock is 120 Mhz.

AP Clocking Restrictions:

• Maximum AP clock is 360 Mhz/180 Mhz (cmem_clk/ac_clk)

Other Clocking Restrictions:

• Maximum SYS_PLL frequency is 719 Mhz

• Maximum AP_PLL frequency is 632 Mhz

• Maximum MEM_PLL frequency is 704 Mhz

• Maximum DIP_MEM, IF_PLL frequency is 724 Mhz

SYS_PLL

*_ref_clk

AP_PLL

IF_PLL

DIP_PLL

pll_divide2

*_clk_gate1

*_ref_clk_sel1

1-64

1 Interface PLL Select Register

....... State after Reset

2 * PLL Divide Register

* TVOUT, USB, SIF, XGA, IF

.......

MEM_PLL

SCP220x ICP Family, Rev.2.1

System Design Considerations

Freescale Semiconductor16

• If_ref_clk, xga_ref_clk, sif_ref_clk, usb_ref_clk and tvout_ref_clk maximum frequency is 133 Mhz

3.4 External Memory Interface

3.4.1 Memory Controller

The following diagram illustrates the system level architecture for the memory controller implementation.

Figure 9. Memory Controller Architecture

The memory controller is configured such that the external memory interface is asynchronous to the system bus.

This allows the system to run at a faster speed than the external memory and also allows for dynamic system

frequency changes. By default, mem_clk is derived from mem_ref_clk. Dynamically changing this clock frequency

likely means that the memory controller cannot be used for the following reasons:

• For DDR applications, the DDL delay line has a lock time whenever the “mclk” frequency is changed. Proper

read operation is not guaranteed during this lock time.

• The memory controller timing registers can only be updated when the memory controller is put into a

configuration state. During this configuration state, external memory accesses are not allowed.

Registers are described in 5.6, Memory Controller.

3.5 Reset

A SCP220x chip becomes operational after a hardware reset through its reset pin (resetN). This pin, when asserted,

keeps the entire chip in a reset state. After the power supply voltages have stabilized, the external reset must remain

asserted for at least 1 sec. Then the chip waits for the PLLs lock for 500 input reference clock periods.

Figure 10: Reset Timing below illustrates the time line of events that occur within the chip when the external reset

is de-asserted.

mem_clk

sdram_dqs

sdram_clkn

sdram_clk

sdram_data

sdram_ctrl

pkg_opt

mem_clk_2x

mem_clk

apb

axi

aclk

mclk

fb_clk

mclk_n

mclk_2x

mclk_2xn

control

data

dqs_in

dqs_out

clk_out

sys_clk

AXI Fabric

APB Bridge

DLL delay

PA D

Muxing

Memory

Controller

Memory Controller

System Design Considerations

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 17

Figure 10. Reset Timing

As explained above, the internal reset architecture is controlled by an external reset pin but also by software initiated

reset requests from boot loader, system registers and watchdog [see the Figure below].

Figure 11. Internal Reset Architecture

NOTE

Most pins are in tri-state during and after reset so no damage could happen.

It is possible to reset the chip or a block through the system registers (See 5.4, Reset and Clock Gating).

3.6 Boot-up

3.6.1 Hardware Boot-up Configuration

The SCP220x chips need some pins to be set appropriately to boot and function properly.

• hw_deep_secure = 0 (low)*

• bootmode = 1 (high)*

*Suggestion: a 100 KOhms (±5%, 1/16 W) can be use as pull-up or pull-down resistor.

3.6.2 Boot-up configuration

The SCP220x chips have a configurable boot mechanism. They offer options depending of the connected hardware

and boot configuration.

To configure the boot-up configurable parameters, a subset of the Display Interface Port Data bus pins (dip_data)

are sampled when reset is de-asserted. The dip_data pins are tri-stated by default; this allows the pull-up and

pull-down values to be sampled. The SCP220x have internal a pull-up and pull-down configuration so a default

behavior is available on some pin without requiring external pull-up or pull-down resistors.

The following table describes the configurable options.

1 µsec

Power Supply

External Reset

PLL Locked

Delayed Reset

500 input reference clocks

Timing

Arm held in reset

software block reset

Watchdog expired

Generation

Boot

Loader

System

Registers

Watchdog

Bootloading

external reset

enabled

ARM register

write

Reset Block

block resets

delayed reset

SCP220x ICP Family, Rev.2.1

System Design Considerations

Freescale Semiconductor18

To set a level externally on the dip_data pins, you can use a 4.7 KOhm (±5%, 1/16 W) resistor as pull-up or pull-down.

3.6.3 Boot-up Timeline

The following timeline illustrates events that occur during a successful boot sequence. The internal configuration and

software binary image must be resident in the SPI device or NAND flash prior to initiating the boot-up sequence.

Figure 12. Boot-up Sequence Timeline

It is possible to skip some steps in the boot-up sequence. For instance, if the software image was previously

downloaded and the DRAM was put into self refresh mode, then the DRAM initialization and code download steps

would not be necessary.

There are several possible ways to load the code into the SCP220x, they are presented in 3.6.4, Hardware Boot

Load Modes.

Table 4. SCP220x Boot-up Configurable Options

Configurable Feature dip_data Pins

(internal PU/PD) Operation

Enables full-on power domain usage

by default

dip_data[7]

0 = DISABLED*

1 = ENABLED

Enable ECC checking for NAND flash

booting

dip_data[6]

0 = DISABLED*

1 = ENABLED

Boot Loader Mode

NEED external resistor!

See also section 3.6.4

dip_data[5-3]

PD PU PD

000 = DRAM (debug only)

001 = SPI port generic flash

010 = Reserved*

011 = SPI port ATMEL Dataflash

100 = NAND flash

Reserved dip_data[2] Reserved

PLL configuration so that the internal

clocks are 96 Mhz

See Section 3.3

dip_data[1-0]

PU PD

00 – input clk = 13 Mhz

01 – input clk = 19.2 Mhz

10 – input clk = 24 Mhz*

11 – input clk = 27 Mhz

* chip default

PU / PD : Pull-Up / Pull-Down

dip_data: Display Interface Port Data bus pins

chip reset de-asserted

dip_data pins sampled for

configuration

core reset de-asserted

cfg memory controller

Initialize DRAM

put controller in “run” mode

time

remove ARM from reset

PLL lock time

copy image to memory

System Design Considerations

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 19

For all cases, the format of the downloaded data contains both the configuration information as well as the software

image. The data format is as follows:

Figure 13. Hardware Boot Loader Load Description

3.6.4 Hardware Boot Load Modes

The hardware boot loader block facilitates code loading from different external interfaces.The external interface gets

data from an external device and the boot loader block moves the data from the receive FIFO to DRAM memory

While the Hardware Boot Loader is operating, the ARM926EJ-S processor is held in reset so that it does not start

executing code until the complete program store is in place. When the byte counter expires, indicating all code has

been copied, the boot loader indicates to the reset block that the ARM926EJ-S processor can be removed from

reset.

Possible boot loader configurations, as specified by the downloaded configuration information, are identified in the

table below.

Table 5. Configuring Boot Load Using dip_data[5:3] Pins

dip_data[5:3] Description

b000 This setting will not invoke the boot loader and the ARM926EJ-S processor will be removed from

reset immediately. This is a debug mode of operation. Code must be written to memory through some

other means (ie. JTAG Port).

b011 Code is resident in a serial NAND flash connected to the SPI port. The serial Flash Memory is an

ATMEL DataFlash memory that supports the “continuous array read” command (0xe8).

cfg register data

cfg register address

cfg register data

cfg register address

cfg register data

# of image bytes

image start address

image

# of image bytes

image start address

image

# of image bytes

4 bytes indicates the number of registers to configure. A value of “0”

will effectively bypass the configuration aspect.

cfg register address

# of cfg registers

4 bytes indicates register address. There is a special case. When this

field is “0”, it means that the register data should be treated as a delay.

4 bytes of data to write to the register or to use as a delay count.

4 bytes indicating the number of bytes of image data to follow.

4 bytes indicating the start address for this image “chunk”.

“x” bytes (multiple of 4 bytes) of image data.

A byte count of “0” indicates the end of the boot loading process. The

ARM is then taken out of reset.

SCP220x ICP Family, Rev.2.1

System Design Considerations

Freescale Semiconductor20

If booting from NAND Flash, there is an optional ECC checking mode that may be enabled via a software register.

If ECC checking is enabled, the boot_loader checks for errors after a block is read from the device. Upon error

detection, the boot loader keeps the ARM926EJ-S processor in reset.

For NAND Flash, the data must be organized in the 2K Flash sector as follows.

Figure 14. NAND Flash Data Organization

3.7 Low Power Configurations

The SCP220x chips offer three power consumption reduction features described below: voltage islands, clock gating

and processor standby. They can be implemented independently for maximum control.

3.7.1 Voltage Islands

The SCP220x provides two voltage islands: Low Power Audio/Video domain and the IC Core domain (see Figure 2.,

SCP220x Internal Architecture).

The Low Power Audio/Video domain is powered through the VDD_LP pin. This domain allows for processing at

reduced power consumption. The ARM926EJ-S processor runs along with some of the blocks offering some

processing, audio and display capability (digital out only, see Figure 30., Display Sub-System (DSS) Internal

Architecture). Apex is not running and there is no input of images.

The IC Core domain is powered through the VDD_CORE pin. This domain contains the high performance blocks

such as the APEX, SIF and USB.

Low power consumption mode is achieved by removing power to the IC Core (VDD_CORE) by an external device

(i.e. power MOSFET) optionally controlled via a SCP220x GPIO pin. CogniVue Reference Design Kit (RDK) has this

low power option implemented. NOTE: it is recommended that all the other power lines be connected at all times

even if the corresponding blocks are not active.

b001 Code is resident in a serial NAND flash connected to the SPI port. The serial Flash Memory is an

industry standard memory that supports the “read data bytes” command (0x03).

[b010] [RESERVED]

b100 Code is resident in NAND flash. The NAND flash block read sequence is:

After reset is de-asserted, the bootloader will issue a “reset” command (“ff”) followed by a 25 µsec

delay.

The boot loader then issues the page read command (“00”) and 5 bytes of address (all “0”). This is

followed by a read confirm command (“30”).

Before proceeding further, a 50 µsec delay occurs.

A 2 Kbyte page is then read. If ECC is enabled four 512 byte page reads are issued.

Table 5. Configuring Boot Load Using dip_data[5:3] Pins

512 bytes chuck 512 bytes chuck 512 bytes chuck 512 bytes chuck

7 spare bytes

9 ECC bytes

4x 512 bytes chucks = 2048 bytes image

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 21

3.7.2 Clock gating

It is possible to idle some blocks by gating their clocks. Clock gating is achieved through registers, see 5.4, Reset

and Clock Gating. Note that this functionality is provided by the SDK, direct register setting is recommended only for

custom bootloader code as SDK is not available at this stage.

3.7.3 Processor Standby

Another way to save power is to place the ARM926EJ-S processor in standby when no processing is required before

an event.

4 Interconnect and Communication

4.1 NAND Flash Interface

The SCP2201 and SCP2207 products have a NAND flash interface for connectivity to an external NAND flash

device. The following list details specific NAND flash features:

• 8-bit datapath

• Software configurable external control signal timing

• Incoming and outgoing datapath implemented using FIFOs

• Software controlled command and page address

• Read/Write datapath that bypasses the FIFO and allows direct access

• Configurable page size

• NAND flash read and write algorithms are software driven

• Optional hardware ECC support; a simple ECC (1bit correct, 2 bit detect) as well as a Reed Solomon ECC

algorithm (4 bit correct)

• Supports up to 4 external chip selects

4.1.1 NAND Flash connection

The following figure shows the connection between the SCP2201 or SCP2207 and a typical external NAND flash

device. It should be noted that the „ry_by. signal is not a dedicated pin on the SCP2201 or SCP2207. Instead this

connection, required for command status, is made to a GPIO. Alternatively, a software managed polling routing may

be used to determine when various commands are completed.

Figure 15. NAND Flash Connectivity

The following table describes the NAND Flash Interface pinout for the SCP220x

data[7:0]

NAND Flash Interface

nand_D[7:0]

NAND Flash

SCP2201

nand_cle

nand_ale

nand_ren

nand_wen

nand_cen[3:0]

GPIO

data

nand_cle

nand_ale

oen

wen

csn

ry_by

SCP2207

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor22

4.1.2 NAND Flash Hardware Description

The hardware implementation for the NAND Flash block is as shown in the following diagram.

Figure 16. NAND Flash Hardware Architecture

The NAND Flash front-end contains a state machine that drives the external interface based on the configuration

settings from the software interface.

The front-end block issues commands, address and data as directed by the particular software configuration. The

transmit and receive fifos provide buffer space such that the internal bus-bandwidth required to move data is

minimized because AMBA AHB bursts can efficiently move data minimizing overall bus bandwidth usage.

The following diagrams illustrate what the external waveforms look like and also illustrate any software configurable

parameters that control the external signals.

Table 6. NAND Flash Interface

Signal Alternate Function Pin Direction Pin Description

nand_D[7:0] gpio[81:74] or

mmcplus_data[7:0]

Bi-dir. NAND data bus or alternate function

nand_cle gpio[11] Bi-dir. Command latch enable or alternate function

nand_ale gpio[10] Bi-dir. Address latch enable or alternate function

nand_cen[0] gpio[12] or mmcplus_clk Bi-dir. Chip select or alternate function

nand_cen[1] gpio[70] or mmcplus_cmd Bi-dir. Chip select or alternate function

nand_cen[2] gpio[71] or spi_Rxd1 Bi-dir. Chip select or alternate function

nand_cen[3] gpio[72] or spi_Rxd2 Bi-dir. Chip select or alternate function

nand_ren gpio[14] Bi-dir. Read enable or alternate function

nand_wen gpio[13] Bi-dir. Write enable or alternate function

Interrupt

Generation

NAND Flash Block

AHB

Interrupt

nand control

sys_clk domain if_ref_clk domain

Registers

Frontend

AHB

Interface

.........................................................................

FIFO

DMA

nand data

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 23

Figure 17. NAND Flash Page Read Cycle

Figure 18. NAND Flash Page Write Cycle

It should be noted that ry_by is not a dedicated pin. Instead it has to be connected to a GPIO or else software must

poll the NAND Flash device to determine when various commands are completed.

NAND Flash has a page and block structure as illustrated in the following diagram.

Figure 19. NAND Flash Page and Block Structure

The software configurable parameters in the NAND configuration register allow for a lot of flexibility when

programming and reading NAND Flash. There are two fields, page_size and spare size. As an example: lets say

that the data space in the NAND is 512 bytes and the spare space is 16 bytes (this is the case Toshiba 128Mx8

device).

cmd

nand_csn

nand_cle

nand_ale

nand_we

nand_re

ry_by

data

t1 t3 t7 t7

t5 t6

a2 a3 d1 d2 d3 d4 d5

cmd

nand_csn

nand_cle

nand_ale

nand_we

ry_by

data

t1 t3 t7 t7

a2 a3 d1 d2 d3 d4 d5

cmd

Page

data spare

Block

A page is composed of the data and spare

area. It represents the granularity that can

be read or written.

A block is composed of multiple pages and

represents the granularity that can be

erased.

The spare area is the location where

information such as ECC and bad blocks is

stored.

IO width

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor24

Case 1 - ECC parity is enabled and only a single page is going to be written. In that case set page_size=512,

ecc_ena = 1, spare_size=0. The interface will write the page of data as it fills into the FIFO, generate parity during

this process and append the 6 bytes of ECC to the end of the data stream before interrupting indicating completion.

If it was a read, the interface would have read 512 bytes of data and placed them in the FIFO re-generating a new

ECC during this process. The interface would have then read the 6 bytes of ECC from the NAND and made the parity

check available to software before interrupting indicating completion.

Case 2 - ECC parity is enabled and multiple pages are read. In this case set page_size=512, ecc_ena = 1,

spare_size=10. Operation will proceed as described above except after the ECC has been read, 10 dummy bytes

are read effectively setting the address pointer to the beginning of the next block of data. The Flash will indicate it is

ready for the next block via it.s RY/BY pin at which time another "kick" will initiate another read process. The

"command" and "address" aspect of the cycle do not need to be repeated.

Case 3 - ECC parity is not required and a single page is going to be written. In this case set page_size=512, ecc_ena

= 0, spare_size=0. The interface will only write the page of data to NAND prior to interrupting.

The description of the control registers for the NAND Flash interface can be found at 5.7, NAND Interface Registers

Description.

4.2 UART

The SCP220x has two UARTs, referred to as UART and UART1, used for incoming or outgoing data paths. Note

that uart1_Rx and uart1_Tx signals of UART1 are available via shared I/Os and this UART does not support

CTS/RTS modem signals.

• The UARTs have the following features:

• Asynchronous interface

• Programmable baud rate

• Parity and framing error detection with indication via interrupts

• Echo, local loopback and remote loopback diagnostic modes

• Single start bit, 8-bit character length, programmable stop bits (1 or 2), programmable parity (even, odd or

none)

• Independent receive and transmit FIFOs

• The primary UART supports CTS/RTS modem signals for hardware flow control.

The following table lists the SCP220x pin information for the UART Interface.

UART1 signals are accessible only as alternate functions. These signals are listed in 4.12.1, GPIO and Alternate

Function List.

Table 7. UART Interface

Signal Alternate

Function Pin Direction Pin Description

uart_Rx gpio[23] Bi-dir. UART serial receive data or alternate function

uart_Tx gpio[22] Bi-dir. UART serial transmit data or alternate function

uart_cts gpio[82] or spi_CS1 Bi-dir. Clear to send modem signal or alternate

function

uart_rts gpio[83] or spi_CS2 Bi-dir. Request to send modem signal or alternate

function

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 25

4.2.1 UART Hardware Description

The following diagrams illustrate the various loopback modes that are supported.

Figure 20. Uart Diagnostic Loopbacks

The following UART protocol is supported with configurability for the stop and parity bits.

Figure 21. Uart Protocol

The hardware implementation for the UART block is as shown in the following diagram.

Figure 22. Uart Hardware Architecture

The Baud rate generator uses the software configurable baud rate register as a divider to generate the receive and

transmit clock enables.

The FIFOs are identical async fifos. The frontend block reads 8 bit wide data out of the transmit fifo, serializes it,

adds start,stop and parity bits and transmits it at the programmed baud rate. Similarily the frontend block receives

serial data and forms an 8 bit word. Start,stop and parity bits are stripped off. Parity errors and frame errors are

checked and generate interrupts.

The modem signals, when enabled, provide flow control to the hardware. The Clear To Send (CTS) input modem

signal indicates to the transmit state machine whether or not to send out a character. The receive state machine

generates the ready to send output when there is an appropriate amount of space available in the fifo.

The description of the control registers for the UART interface can be found at 5.8, UART Control Registers.

FIFO

Echo Local Loopback Remote Loopback

Start d7 d6 d5 d4 d3 d2 d1 d0 Parity Stop Start d7

Interrupt

Generation

UART Block

AHB

Interrupt

RTS

CTS

sys_clk domain if_ref_clk domain

Registers

Loopback

Baud Rate

Generator

Frontend

AHB

Interface

.........................................................................

FIFO

DMA

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor26

4.3 SPI

The Serial Peripheral Interface (SPI) provides an alternate data path to and from the SCP220x. The SCP220x device

has two SPI blocks on board referred as SPI and SPI1. The SPI blocks in the SCP2201 and SCP2207 devices each

have four chip selects (spi_CS, spi_CS1, spi_CS2, spi_CS3), four serial receive data signals (spi_Rx, spi_Rx1,

spi_Rx2, spi_Rx3) and a serial transmit data signal (spi_Tx). (Note that three of the chip selects and three receive

signals of SPI are accessible via shared I/Os). For more details, refer to 4.12.1, GPIO and Alternate Function List.

SPI1 has a dedicated clock, a chip select, and transmit and receive I/Os as shown below in Table 8.

This interface is compatible with the Motorola SPI specification and provides the following features:

• Four wire synchronous full duplex interface using a clock, chip select, serialized receive data and serialized

transmit data

• Configurable as master or slave. The master sources the clock and chip select and the slave sinks these

pins.

• 128-byte transmit FIFO and 128-byte receive FIFO

• Programmable clock rate (master mode only)

• Programmable frame size

• Supports “continuous” mode of operation

• Programmable clock phase (SPH) and polarity (SPO)

The following table lists the SCP220x pin information for the SPI.

The clock phase and clock polarity configurability allow for four modes of operation. The clock phase controls which

edge of the clock that the transmitter transitions data and the receiver samples data. Transmission and reception of

data operate on opposite edges of the clock. The polarity controls whether or not the clock is high or low during the

inactive period. The following four diagrams illustrate the operation for these four modes for a byte length transaction.

When SPH=0, data is transmitted on the falling edge and sampled on the rising edge. When SPH=1, data is

transmitted on the rising edge and sampled on the falling edge.

When SPO=0, the clock is low during inactivity (ie. chip select de-asserted). When SPO=1, the clock is high during

inactivity.

Table 8. SPI Signals

Signal Alternate

Function Pin Type Pin Description

spi_Clk gpio[29] Bi-dir. SPI serial clock or alternate function

spi_CS gpio[28] Bi-dir. SPI slave select or alternate function

spi_Tx gpio[26] Bi-dir. SPI serial transmit data or alternate function

spi_Rx gpio[27] Bi-dir. SPI serial receive data or alternate function

spi1_Clk mp2ts1_clk Bi-dir. SPI1 serial clock or alternate function

spi1_CS mp2ts1_sync Bi-dir. SPI1 slave select or alternate function

spi1_Tx mp2ts1_valid Bi-dir. SPI1 serial transmit data or alternate function

spi1_Rx mp2ts1_data Bi-dir. SPI1 serial receive data or alternate function

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 27

Figure 23. SPI Clock Phase/Polarity - SPH=0, SPO=0

Figure 24. SPI Clock Phase/Polarity - SPH=1, SPO=0

Figure 25. SPI Clock Phase/Polarity - SPH=0, SPO=1

Figure 26. SPI Clock Phase/Polarity - SPH=1, SPO=1

4.3.1 SPI Hardware Description

The hardware implementation for the SPI block is as shown in the following diagram.

spi_sck

spi_ssn

spi_txd/rxd d7 d6 d5 d4 d3 d2 d1 d0

12345678

spi_sck

spi_ssn

spi_txd/rxd d7 d6 d5 d4 d3 d2 d1 d0

12345678

spi_sck

spi_ssn

spi_txd/rxd d7 d6 d5 d4 d3 d2 d1 d0

12345678

spi_sck

spi_ssn

spi_txd/rxd d7 d6 d5 d4 d3 d2 d1 d0

12345678

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor28

Figure 27. SPI Hardware Architecture

The frontend sub-block is operating in the spi_clk domain whether or not the SPI interface is configured as a master

or slave. The clock is tapped off the external pad so that the internal timing

requirements within the frontend are identical for master and slave operation. The frontend block is primarily a

serialization and de-serialization engine that pops and pushes data from/to the fifos. When the frontend gets a clock

edge when selected, its starts serializing transmit data and de-serializing the receive data. When a “word” has gone

through the serialization process, the frontend pushes the word into the receive fifo and pops the transmit fifo. The

process then repeats until the chip select is de-asserted.

The master clock generator is only used when the SPI block is configured as a master. The clock generator creates

an external SPI clock that is a programmable divider of the interface PLL clock. The clock generator must also create

the master chip select since it gets asserted before the external SPI clock starts wiggling. The chip select and

external SPI clock start a transaction when a data event has occurred in the FIFOs. This most likely is the event of

the transmit FIFO containing data. A FIFO not empty signal traverses clock domains and is used to kick activity within

the clock generator. Similarily, when the transmit fifo becomes empty (and the last data has been transmit/received),

the clock generator de-activates the external clock and chip select.

The receive and transmit FIFOs are asynchronous with one side in the internal system clock domain and the other

side in the interface reference clock domain. The read and write pointers cross clock domains through the technique

of converting the pointer to a gray code, double sampling and converting back to a pointer. The limitation that this

imposes is that the databus size must not be dynamic. The databus size is software configurable but cannot

dynamically change while the fifo is in use.

The description of the control registers for the SPI interface can be found at 5.9, SPI Registers.

4.3.2 SPI Port Timing

Figure 28. SPI Port Timing

.........................................................................

Interrupt

Generation

SPI Block

AHB

Interrupt

spi_clk

sys_clk domain

Registers

Master Clock

Generator

AHB

Interface

FIFO

DMA

spi_csn[3:0]

Frontend

if_ref_clk domain spi_clk domain

master/

slave

spi_clk

inputs

outputs

t13

t14

t15

t16

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 29

4.4 Sensor Interface (SIF)

The Sensor Interface receives data from one of two sources – the external sensor or from memory. Supported

format(s) of input data from the sensor:

• YUV422 stream

NOTE

The Sensor Interface block may be programmed to accept YUV422 data in UYVY,

YUYV, VYUY and YVYU formats. Input image sizes up to 10M-pixels are supported

at clock frequencies up to 160 MHz.

Output image formats supported by the Sensor Interface block are:

• YUV422 Stream

• YUV420 Planar

The Sensor Interface also provides the following functionality:

• scale down:

• average mode scaling by: 1, 1/2, 1/4 and 1/8

• decimation mode scaling by : horizontal and vertical decimation

• adaptive luminance using histogram table build or gamma correction

• image effects: grey scale, sepia, negative, emboss, sketch

• edge enhancement

• image smoothing using a LPF with 9 taps for luminance and 5 taps for chrominance coefficients

• WOI (window of interest) used for cropping the input images

The SIF is controlled via the SDK under the Sensor Device Interface (SDI).

The following table lists the SCP220x external pinout of the Sensor Interface (SIF).

Table 9. SPI Port Timing

Parameter Symbol Min. Typ. Max. Unit

SPI port clock frequency (master) t13 50 MHz

SPI port input setup time (master) t14 (3.0 V) 4.3 ns

SPI port input hold time (master) t16 (3.0 V) 0.25 ns

SPI port output delay time (master) t15 (3.0 V) 10.3 ns

Table 10. Sensor Interface (SIF) External Pinout

Signal Alternate Function Pin Direction Pin Description

sensor_D[9:0] - Input Sensor data

sensor_pclk - Input Sensor pixel clock

sensor_rclk - Input Sensor horizontal sync signal

sensor_fclk - Input Sensor vertical sync signal

sensor_clkout gpio[1] Bi-dir. Sensor source clock or alternate function

sensor_fodd gpio[52] Bi-dir. Field (odd, even) or alternate function

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor30

Figure 29. Sensor Interface Timing

4.5 Display Sub-System (DSS)

The Display Sub-System (DSS) has two types of outputs through the Display Interface Port:

• Digital, for LCD (1x) or CPU-like (x4) interfaces

• Analog, generates NTSC/PAL composite signal

To minimize the load on the processor and APEX, there are two advanced resize/format blocks Bitblt and Bitblt mini.

The DSS has mixed voltage islands; the figure below gives more precision about the correspondence:

Figure 30. Display Sub-System (DSS) Internal Architecture

sensor_gpio gpio[53] Bi-dir. Sensor GPIO or alternate function

Table 11. Sensor Interface Timing

Parameter Symbol Min. Typ. Max. Unit

Sensor pixel clock frequency t5 160 MHz

Sensor input setup time t6(3.0V) 3.2 nsec

t6(1.8V) 3.2 nsec

Sensor input hold time t7(3.0V) 0.75 nsec

t7(1.8V) 0.75 nsec

Table 10. Sensor Interface (SIF) External Pinout

sensor_pclk

inputs

t6 t7

DIP

Bitblt mini

Bitblt

AHB 1 (32-bit)

M - Master

S - Slave

M/S - Master/Slave

Low Power

Audio/Video

Voltage Domain

Full Power

Voltage Domain

Internal

DAC

AXI Fabric (64-bit)

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 31

4.5.1 Display Interface Port (DIP) and TV Output

The Display Interface Port (DIP) interfaces the SCP2201 or SCP2207 to an external video/display device such as

an LCD or a television.

The external display controller in the SCP2201 and SCP2207 devices may be a TFT LCD or four CPU-like interface

devices

The DIP has the following features:

• Color format resizing (RGB24 -> RGB666/RGB565; RGB666->RGB24/RGB565;

RGB565->RGB24/RGB666, YUV422->YUV444)

• Display Bus Interface (DBI): Drives an LCD, LCD Controller or CPU-type interface. Four chip selects are

available to support up to four devices including any combination of LCD Controllers and/or other devices

with CPU-type interfaces.

• Timing Interface: Drives an external video device (RBG LCD) with hsync/vsync/blank signals; when this

mode is enabled, only TFT LCD devices may be used. This interface supports up to WVGA resolution.

• TV Interface: This analog interface derives timing information from an internal NTSC/PAL video encoder to

drive video data at correct intervals. Maximum resolution supported is 640x480 (VGA).

The following figure shows a configuration with single TFT-RGB LCD and a TV connection to the DIP. In this case,

the internal SCP220x video encoder and DAC are used to derive the analog TV signal.

Figure 31. TFT-RGB LCD and TV Connected to DIP (Using Internal DAC)

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor32

Figure 32. RGB-type Display Waveform Diagram

The following figure shows a configuration with dual LCDs and a TV connection to the DIP. In this case, the internal

SCP220x video encoder and DAC are used to derive the analog TV signal.

Figure 33. CPU-Type LCD and TV Connected to DIP (Using Internal DAC)

The figure below illustrates timing for DBI connectivity to a CPU-type interface.

data

10 µF 1.02 KOhm

(+/- 1%)

0.1 µF

0.01 µF

75 Ohm

3.3V

Second LCD

video_in

LCD

data

dip_D

dip_CSn0

dip_CSn1

dip_CSn2

dip_CSn3

dip_OEn

dip_RS

dip_Wrn

DAC_AVDD

DAC_AVSS

DAC_vref_in

DAC_rset

DAC_vref_out

DAC_comp

DAC_io

DIP

SCP220x

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 33

Figure 34. DBI to CPU-type Display Waveform Diagram

The following table lists the SCP2201 and SCP2207 pin information for the DIP. The DAC signals correspond to the

TV Output feature available for all SCP220x products.

Table 12. Display Interface Pins

SCP2201, SCP2207

Signal

Alternate

Function Pin Direction Pin Description

dip_data[23] gpio[51] or

uart1_txd

Bi-dir. Digital video data or alternate function

dip_data[22] gpio[50] or

uart1_rxd

Bi-dir. Digital video data or alternate function

dip_data[21] gpio[49] Bi-dir. Digital video data or alternate function

dip_data[20] gpio[48] Bi-dir. Digital video data or alternate function

dip_data[19] gpio[47] Bi-dir. Digital video data or alternate function

dip_data[18] gpio[46] Bi-dir. Digital video data or alternate function

dip_data[17] gpio[3] or

scl_sec

Bi-dir. Digital video data or alternate function

dip_data[16] gpio[4] or

sda_sec

Bi-dir. Digital video data or alternate function

dip_data[15:0] - Bi-dir. Digital video data bus

dip_pclk gpio[5] Bi-dir. Digital video pixel clock or alternate function

dip_OEn gpio[15] or

dip_blank

Bi-dir. Digital video output enable or alternate function

dip_RS dip_hsync Output Digital video register select or alternate function

dip_Wrn dip_vsync Output Digital video write enable or alternate function

dip_CSn0 - Output Digital video chip select 0

Timing parameters depend on CPU clock and modifying the CPU clock frequency

valid read dataxxxxxx

dip_RS

dip_CSn

dip_OEn

dip_Wrn

dip_D

will alter the duration of the data transfer.

t0 - Width of the overall read cycle + 1

t1 - Time between transactions + 1

t2 - Time up to start of Wrn pulse and start of write data + 1

t3 - Width of Wrn pulse + 1

t4 - Extend write data after Wrn pulse + 1

t0 t1 t2 t3 t4 t1

valid write data

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor34

Figure 35. DIP (TFT-RGB-type) Port Timing

NOTE

DIP’s CPU-type protocol does not have a reference clock to determine setup/hold

time for dip_data[17:0] (For CPU Read transaction). Timing, as shown in Figure 35,

is dependent on individual CPU-type LCD, configurable within DIP.

dip_CSn1 - Output Digital video chip select 1

dip_CSn2 gpio[24] Bi-dir. Digital video chip select 2 or alternate function

dip_CSn3 gpio[25] Bi-dir. Digital video chip select 3 or alternate function

dip_cpu_vsync gpio[54] Bi-dir. External synchronization frame pulse or alternate function

DAC_comp - Analog

Output

Analog output of the DAC; signal can drive 1.0 Vpp on 75

ohm load

DAC_vref_out - Analog

Output

Voltage reference output. This output delivers 1.140 V

reference voltage from cell. It is normally connected to the

VREFIN pin.

DAC_rset - Analog In/Out An external resistor Rset connecting DAC_rset pin to AVSS

adjusts the magnitude of the DAC full-scale output current.

Recommended setting is 1.02 KOhm with 1% tolerance.

DAC_vref_in - Analog Input Reference voltage input. It is suggested to place 0.1 µF

ceramic capacitor between this pin and AVSS pin externally.

DAC_io - Analog

Output

Analog output pin (with drive strength) to which a resistor

and capacitor is attached to ground to set the output current

of the DAC

Table 13. DIP (TFT-RGB-type) Port Timing

Parameter Symbol Min. Typ. Max. Unit

DIP port pixel clock frequency t10 70 MHz

DIP port output delay time t11 (3.0 V) 5.5 ns

Table 12. Display Interface Pins

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 35

4.5.2 Bitblt and Bitblt mini

Bitblt and Bitblt mini are supported through the SDK under the Graphic Display Interface (GDI).

4.6 USB 2.0 HIGH SPEED

The USB Interface has the following features:

• USB 2.0 HIGH SPEED compliant

• SCP2201 and SCP2207 devices support USB OTG

• USB 2.0 PHY is integrated on chip

• Supports high-speed (480 MHz), full speed (12 MHz), and low speed (1.5 MHz) operation

• Supports seven physical endpoints - one control and six endpoints configurable as IN or OUT. The IN/OUT

endpoints are software configurable as bulk, isochronous, interrupt or control

The following table lists the SCP220x pin information for the USB Interface.

The usb_phy_vbus signal monitors the 5.0 V VBus signals for USB 2.0 HIGH SPEED. The following figure illustrates

USB interface connectivity with the host.

Table 14. USB Interface

Signal Alternate

Function Pin Direction Pin Description

usb_phy_id - Analog USB pad Indicates A or B cable

usb_phy_vbus - Analog USB pad Vbus power monitor input. This is a 5 V

signal (+/-10%) with a max value of 5.5 V .

usb_phy_Plus - Analog USB pad USB data plus

usb_phy_Minus - Analog USB pad USB data minus

usb_phy_res - Analog USB pad External resistor of 8.2 K ± 1% should be

connected from here to ground

utmiotg_drvvbus gpio[73] Bi-dir. Externally controls power source for USB

VBUS voltage or alternate function;

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor36

Figure 36. USB/Host Connectivity

4.7 Audio Interface

The Audio Interface provides a direct connection to either voice quality or high-quality audio ADC/DAC. The Audio

Interface has the following features:

• Supports I2S or AC97 interface protocol

• Supports full duplex data path

• Separate receive and transmit FIFOs

• Software configurable hardware interface to support a variety of I2S and AC97 applications

Figure 35 shows the SCP2201/SCP2207 audio interface connections to an audio DAC.

Figure 37. Audio Interface

The following lists the SCP2201 and SCP2207 pin information for the Audio Interface.

Table 15. Audio Interface Pins

Signal Alternate

Function Pin Direction Pin Description

audio_clkr gpio[16] Bi-dir. Audio receive bit clock or alternate function

audio_clkx gpio[19] Bi-dir. Audio transmit bit clock or alternate function

usb_phy_id

usb_phy_Plus

usb_phy_Minus

usb_phy_rext

usb_phy_vbus

utmiotg_drvvbus

out

8.2KOhm

(+/- 1%)

Charge

Pump

Host

VBUS

USB Interface

SCP220x

Audio Interface

SCP2201/

audio_clkr

audio_clkx

audio_dx

audio_dr

audio_fsr

audio_fsx

mclk

Audio

DAC

SCP2207

clkr

clkx

fsr

fsx

clk

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 37

There is a large degree of flexibility within this interface that allows support for the following applications:

• AC97 controller sourcing the bit clock

• AC97 controller sinking the bit clock

• I2S controller with a common clock and sync for both receive and transmit. Clock and sync are configurable

as source or sink.

• I2S controller with a separate clock and sync for the receive and transmit. Clocks and syncs are configurable

as source or sink.

The following sample waveforms illustrate the configurability available within this interface. The waveforms also

identify what timing aspects are software configurable.

Figure 38. I2S Stereo Transmission

Figure 39. I2S Mono Transmission

audio_dr gpio[17] Bi-dir. Audio receive data or alternate function

audio_dx gpio[20] Bi-dir. Audio transmit data or alternate function

audio_fsr gpio[18] or

pwm2_out

Bi-dir. Audio receive frame clock or alternate function

audio_fsx gpio[21] Bi-dir. Audio transmit frame clock or alternate function

mclk - Bi-dir. Audio clock source from external audio DAC.

Table 15. Audio Interface Pins

word_lengthdelay

frame_width

frame_period

clk

txd/rxd

word_lengthdelay

frame_width

frame_period

clk

txd/rxd

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor38

Figure 40. AC97 Mode of Operation

4.7.1 Audio Interface Hardware Description

The hardware implementation for the Audio block is as shown in the following diagram.

Figure 41. Audio Hardware Architecture

The clock generator block takes the software configuration from the registers block and divides the master clock

down appropriately to produce the bit clocks for the transmit and receive. Software configuration also controls the

PAD enables at the top level. If the ASIC sources the bit clocks, the PADs are enabled otherwise the bit clocks are

inputs and are driven by an external source. Irregardless of the bit clock source, the bit clocks re-enter the audio

block and are used as clocks in the frontend block. Software configuration select either the positive edge or negative

of the clock and also select whether the receive section has it.s own unique bit clock or uses the same bit clock as

the transmit section.

The frontend block primarily serializes and de-serializes the data form the receive and transmit fifos. The frame/sync

pulses are also generated through a software configured divide of the bit clocks.

The transmit and receive fifos are asynchronous fifos with the internal side residing in the system clock domain and

the external side residing in the bit clock domains. This is the mechanism for crossing between the two clock

domains.

The frontend operates quite differently when running in the I2S mode than when running in the AC97 mode. The I2S

mode operates in stereo or mono. The difference between the two is that the fifos are accessed twice for the stereo

mode of operation and only once for mono mode. The stereo mode sends left/right channel data on one edge of the

frame signal and sends right/left channel data on the other edge of the frame signal. The frame sync will typically be

configured with a 50% duty cycle. Mono mode only sends data on the assertion of the frame signal. In this case the

frame signal is typically a pulse that occurs at the beginning of the frame. Data is always sent MSB first. The fifo can

20-bits16-bits

frame_width (1 channel)

frame_period (48kHz)

clk

txd/rxd ch0 ch1 ch2 ch3 ch4 ch5 ch6 ch7 ch8 ch9 ch10 ch11 ch12 ch0

Registers Clock

Generator

Frontend

Interrupt

Generation

TX1

FIFO

RX1

FIFO

DMA sideband

APB interface

Interrupt

NCO

mclk

fsx

fsr

clkx

clkr

txd

rxd

Audio Block

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 39

only be accessed with width increments of 8,16 or 32 bits. If the actual word length is not on these boundaries, a

larger data width is used with zeros padded in the extra bits (the data is right justified). The data organization in the

fifo is dependant on the word length. Also, for stereo applications, the left and right channel data alternate. The

following diagram illustrates some examples of fifo data organization.

Figure 42. I2S FIFO Data Organization

AC97 is comprised of 13 channels of which the first channel is 16 bits and the rest are 20 bits in length. The frame

period is 48 Khz. The following diagram illustrates the channel organization.

Figure 43. AC97 AC Link Frame Organization

The AC-link output slots are described below. Data for channels 3-12 come from the transmit fifo. If multiple channels

are enabled it is assumed that the data is organized in the fifo in the order that the channel gets transmitted.

Channels 0, 1, 2 and 12 are driven by software register configurations and accesses.

Slot Name Description

0 SDATA_OUT TAG MSBs indicate which slots contain valid data. LSBs convey codec ID.

1 Control CMD ADDR write port Read/Write command bit plus 7 bit codec register address.

2 Control DATA write port 16 bit command register write data.

3,4 PCM L&R DAC playback 16,18,20 bit PCM data for left and right channels.

5 Modem line 1 DAC 16 bit modem data for modem line 1 output.

6,7,8,9 PCM center, surround L&R, LFE 16,18,20 bit PCM data for center, surround L&R, LFE channels.

10 Modem Line 2 DAC 16 bit modem data for modem line 2 output.

11 Modem handset DAC 16 bit modem data for modem handset output.

12 Modem IO control GPIO write port for modem control.

10,11 SPDIF Out Optional AC-link bandwidth for SPDIF output.

32-bit 32-bit 32-bit

Stereo mode - 8-bit words Stereo mode - 20-bit words Mono mode - 16-bit words

PCM

CENTER

PCM

CENTER

LINE 1

DAC

PCM R

FRONT

PCM L

FRONT

CMD

DATA

CMD

ADDR

TAG PCM L

SURR

PCM R

SURR

PCM

LFE

LINE 2

DAC

HSET

DAC IOCTRL

PCM L

(n+1)

PCM L

(n+1)

PCM R

(n+1)

PCM R

(n+1)

PCM L

(n+1)

PCM R

(n+1)

PCM C

(n+1)

PCM

MIC

PCMLINE 1

ADC

STATUS

DATA

STATUS

ADDR

LINE 2

ADC

HSET

ADC

STATUS

IOCTRL

0123456789101112

sync

sdata_out

sdata_in

slot #

TAG PCM L PCM R RSVRD RSVRD RSVRD

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor40

The AC-link input slots are described below. Data from slots 3-11 (if valid) is written into the receive fifo in the order

that the channel arrives. Valid data from channel 1,2 and 12 is presented in a software register. An interrupt/status

indicator informs software that the register contains new data.

Channel 1&2 are used to read and write registers within the codec. The mechanism to utilize these channels is not

through the fifo datapath. Instead software registers exist for the codec address, write data and read data.

Configuration of these registers will enable channel 1&2 in the next audio frame. An interrupt/status indicator

provides feedback on the completion of register writes or on the availability of register read data. More details of this

operation is described in the register definitions. In a similar fashion, the modem IO control and status (channel 12)

are also controlled by software registers.

AC97 codecs have a reset input. It is assumed that this is a GPIO and under software control. Whether or not the

codec sinks or sources the bit clock is determined by the conditions when the reset is removed. If the codec detects

a bit clock present (minimum 5 clocks) while reset is asserted it will be configured to sink the bit clock, otherwise it

will source the bit clock. Depending on the application (ASIC sinking or sourcing the bit clock) software must

appropriately configure and enable the bit clock generation prior to releasing the codec reset if the application

requires the ASIC to source the bit clock. This sequence of events must occur everytime the codec is reset.

There are 3 types of codec resets. The external pin reset (as described above) is a “cold” reset. When a cold reset

occurs all codec registers are reset and bit clock sourcing is re-determined. A “warm” reset will re-activate the

AC-link without resetting the codec registers. A “warm” reset is indicated by a 1 µsec pulse on the sync line. Software

can initiate this process through register configuration. The third reset mechanism is a register bit in the codec.

Software has access to this mechanism through the regular codec register configuration process.

The codec can also be placed in “power-down” mode. This is achieved by writing to a particular register in the codec.

Since this mechanism requires the hardware to enter a particular state after channel 2 has been sent, in addition to

the codec register configuration process, a software indicator bit must be set. To exit from this state a “warm” reset

must be issued.

The AC-link provides 12 channels (@ 20 bits) with a frame rate of 48 Khz. The interface also supports a mechanism

that allows for sampling rates other than 48 Khz. Data rates of 44.1 Khz, 88.2 Khz and 96 Khz are also supported.

The double-rate audio (88.2 Khz or 96 Khz) is supported by combining two slots per DAC channel. This would utilize

the optional alternate channel source for channels 6-12.

Up-sampling is not required to support the 44.1 Khz or 88.2 Khz data rates. Channel 0 (in both the incoming and

outgoing data stream) contains valid channel flags. This provides the mechanism to send valid data in a sub-set of

6-12 Double rate audio Optional AC-link bandwidth for 88.2 or 96khz on L, C, R channels.

Slot Name Description

0 SDATA_IN TAG MSBs indicate which slots contain valid data.

1 STATUS ADDR read port MSBs echo register address. LSBs indicate which slots request data.

2 STATUS DATA read port 16 bit command register read data.

3,4 PCM L&R ADC record 16,18,20 bit PCM data from left and right channels.

5 Modem line 1 ADC 16 bit modem data for modem line 1 input.

6 Dedicated Microphone ADC 16,18,20 bit PCM data from optional 3rd ADC input.

7,8,9 Vendor reserved Vendor specific (enhanced input for docking, array mic, etc.

10 Modem Line 2 ADC 16 bit modem data for modem line 2 input.

11 Modem handset ADC 16 bit modem data for modem handset input.

12 Modem IO status GPIO read port for modem status.

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 41

the frames being sent. A 44.1 Khz data rate needs valid data in only 441 frames for every 480 frames transferred at

48 Khz. The codec determines when data is sent by setting the channel request bits in the incoming TAG

information in channel 0. These are examined by hardware, and the appropriate channels are tagged as

valid and filled with data. Since it is assumed that the fifo is filled with the appropriate sequence of data

depending on which channels are enabled, the hardware must wait until all channel requests (for channels

that are enabled) are requesting since it is not possible to send a channel data in a different sequence

than that present in the fifo. Similarily it is assumed that the receive data remains in order (ie. All channels

are valid or not valid) and the data is written to the fifo as it is received.

A detailed view of the physical AC-link protocol is illustrated in the following diagrams.

Figure 44. AC97 AC-link Output Frame

Figure 45. Figure 44 AC97 AC-link Input Frame

Control registers are described at 5.10, Audio Registers.

Valid

Frame

slot 1

sync

slot 12

bit_clk

sdata_out

slot 1 0 ID1 ID0 19 0 19 0 19 0

slot 2 slot 12Time Slot “valid” bits

End of previous audio frame

Codec ID

codec

ready

slot 1

sync

slot 12

bit_clk

sdata_in

slot 1 0 0 0 19 0 19 0 19 0

slot 2 slot 12Time Slot “valid” bits

End of previous audio frame

Codec ID

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor42

4.7.2 Audio Port Timing

Figure 46. Audio Port Timing

4.8 Media Storage MMC and MMCPlus blocks (compatible SD/SDHC)

The SCP220x has two MMC blocks both having identical characteristics except that MMCPlus is capable of 8-bit

parallel data path:

• MMC: 1 or 4-bit data width

• MMCPlus: 1 or 4 or 8-bit data width

Secure Digital and MMC are supported on both blocks; MMCPlus only on the MMCPlus block.

The Media Storage Interfaces are compatible with the SD and SDHC memory card specifications. SDHC cards are

supported up to 32 GB capacity, but only at SD card interface rates (i.e. clock is 25 MHz and not 50 MHz as SDHC

allows).

The Media Storage Interfaces have the following features:

• Software programmable external clock

• Support of a 48-bit command through a software accessible command buffer

• Support of both a 48 or 136-bit response through a response buffer

• Support of CRC generation and checking

Table 16. Audio Port Timing

Parameter Symbol Min. Typ. Max. Unit

audio_clk frequency t22 50 MHz

Input data (audio_fs, audio_dr) setup time to the

rising edge of audio_clk

t23(3.0 V) 2.9 ns

Input data (audio_fs, audio_dr) hold time from the

rising edge of audio_clk

t24(3.0 V) 0.1 ns

Output data (audio_fs, audio_dx) delay time from

the rising edge of audio_clk

t25(3.0 V) 13.25 ns

audio_fs

t22

audio_clk

audio_dr

audio_dx

t23 t24

t25

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 43

• Software configurable data width of 1 (MMC mode) or 4 bits (SD/SDHC mode) [or 8 bits (MMCPlus) for the

MMCPlus block]

• Incoming and outgoing datapath (implemented using FIFOs) driven by a DMA engine

The interface does not manage the media card power supply. Figure 45 shows the connectivity between the

SCP220x and an SD memory card.

Figure 47. Media Storage Interface to SD Card

The following table lists the SCP220x pin information for the Media Storage Interfaces. Note that the MMCPlus is

only accessible from alternate functions.

4.8.1 Media Storage Interfaces Hardware Description

The hardware implementation for the MMC and MMCPlus block are as shown in the following diagram.

Table 17. Media Storage Interfaces Pins

Signal Alternate Function Pin

Type Pin Description

sd_clk gpio[35] Bi-dir. SD/SDHC clock or alternate function

sd_cmd gpio[34] Bi-dir. SD/SDHC serial command/response or

alternate function

sd_D[3:0] gpio[33:30] Bi-dir. SD/SDHC serial data or alternate function

nand_cen_p[0] gpio[12] / mmcplus_clk Bi-dir Clock

nand_cen_p[1] Gpio[70] / mmcplus_cmd Bi-dir Command

nand_data_p[7:0] gpio[81:74] /

mmcplus_data[7:0]

Bi-dir Data

SCP220x

clk

cmd

data

sd_clk

sd_cmd

sd_data[3:0]

Media Storage Interface

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor44

Figure 48. Media Storage MMC/MMCPlus Hardware Architecture

The hardware architecture of the MMC/MMCPlus blocks are similar to the other serial interface blocks. A register

section contains the software interface and is read and written from the AMBA bus.

The clock generator block, when enabled, divides the system clock down to create the external serial clock. To

simplify timing constraints, the clock is brought back into the block from the outgoing PAD and is used as a clock for

the front end interface block as well as the external side of the FIFOs.

The RX/TX FIFOs are asynchronous FIFOs with the internal side driven by sys_clk and the external side driven by

mmc_clk/mmcp_clk.

The front-end block is a large state machine that deals with the commands initiated in the register block and

generates the appropriate protocol on the external interface.

MMC Control registers are described at 5.11, MMC/SD Control Registers

MMCPlus Control registers are described at 5.12, MMCPlus Control Registers

4.8.2 Programming Model

This section illustrates a number of example software flow diagrams to help illustrate how the interface is used from

a software driver perspective. These flows are examples and by no means indicate that this is the only driver flow.

Depending on the physical device attached variants of the basic examples shown may very well be required.

The SD interface is based on a command and response architecture. The ASIC will issue the command written by

software into the command buffer. The media device will generate a response and this will be capture in the

response buffer for software viewing. Data is then read or written on a 4096bit block basis. Single or multiple data

blocks can be accessed. Hardware strips off the start stop, transmitter and CRC fields prior to dumping the response

or read data in the buffer space. The reverse process happens for the commands and write data blocks.

The following steps illustrate an example media card data read.

1. Initialize the interface pertinent for the media card installed. This would involve configuration of the clock rate

and configuration register.

2. Configure the datapath parameters in the data control register.

3. Issue a command by writing the appropriate command and argument to the command and argument

registers. The argument register should be written first since the act of writing to the command registers

initiates the operation on the interface.

4. If applicable, monitor for a response from the command and verify the response information.

5. Drain the fifo as it fills up. This can be done directly by reading the fifo or a dma channel can be setup to

drain the fifo.

Interrupt

Generation

Media Storage Block

AHB

Interrupt

cmd/rsp

sys_clk domain

Registers

Clock

Generator

Frontend

AHB

Interface

.........................................................................

FIFO

DMA data

mmc_clk/

mmcp_clk

mmc_clk / mmcp_clk domain

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 45

6. Continue the draining operation until the “sd_data_complete” interrupt occurs.

7. Check whether or not any errors have occurred.

The following steps illustrate an example media card data write:

• Initialize the interface pertinent for the media card installed. This would involve configuration of the clock rate

and configuration register.

• Configure the datapath parameters in the data control register.

• Issue a command by writing the appropriate command and argument to the command and argument

registers.

• If applicable, monitor for a response from the command and verify the response information.

• Fill the fifo. This can be done directly by writing to the fifo or a dma channel can be setup to fill the fifo.

• Continue the filling operation until the “sd_data_complete” interrupt occurs.

Check whether or not any errors have occurred.

4.8.3 MMC/MMCPlus Port Timing

Figure 49. MMC/MMCPlus Port Timing

4.9 I2C Interface

The I2C controller is a peripheral interface intended for configuring external devices such as sensors and audio

DACs. The interface consists of the following signals:

• serial clock – This is a clock to sample an incoming serial data stream or to indicate when an outgoing serial

stream has valid data. This serial clock pin will “float” high and “drive” low much like an open collector and

requires an external pull-up resistor.

• serial data – This is a bi-directional IO that can be driven by either the SCP220x or the peripheral being

configured. The serial data pin will “float” high and “drive” low much like an open collector and requires an

external pull-up resistor.

The SCP220x has two I2C interfaces on chip. One of these interfaces has primary functionality on dedicated I/Os.

The other I2C interface has its serial clock and serial data accessible as alternate functions via shared I/Os as shown

in the table below.

Table 18. MMC/MMCPlus Port Timing

Parameter Symbol Min. Typ. Max. Unit

MMC port clock frequency t27 25 MHz

MMC port input setup time t28 (3.0 V) 2.5 ns

MMC port input hold time t29 (3.0 V) 5.0 ns

MMC port output delay time t30 (3.0 V) 12.5 ns

sd_clk

inputs

outputs

t27

t28 t29

t30

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor46

Transactions on the serial interface follow a particular protocol.

• Transmission Start

• Peripheral Slave Address

• Peripheral Internal Address

• Data transfer

• Transmission Stop

Transmission start and stop are indicated by sequencing the serial clock and data as illustrated in the following

diagram. Transmission start occurs when serial data falls while serial clock is high and transmission stop occurs

when serial data rises while serial clock is high.

Figure 50. Transmission Stop and Start Conditions

As illustrated there are a few timing parameters that must be satisfied for proper operation. Software configurable

counters are used to generate these time intervals since the system clock rate is not fixed.

There is also a software configurable delay parameter as illustrated below:

Figure 51. I2C Configurable Delay

Table 19. I2C Interface

Signal Alternate

Function Pin Direction Pin Description

scl gpio[36] Bi-dir. Serial configuration clock

sda gpio[37] Bi-dir. Serial configuration data

dip_data[17] gpio[3] / scl_sec Bi-dir. Serial configuration clock

dip_data[16] gpio[4] / sda_sec Bi-dir. Serial configuration data

Stop

Start

serial_clk

serial_data

Thdsta Tsusto

Tbuf

S1 SLAVE ID A ADDRESS A WRITE DATA A S2

Typical Write Sequence

Tdelay Tdelay Tdelay

A ADDRESS A

Typical Read Sequence

Tdelay Tdelay S1 SLAVE ID A

Tdelay READ DATA A S2

Tdelay

SLAVE ID

Start

Acknowledge

Stop

Indicates whether the data transaction is a Read (“1”) or a Write (“0”)

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 47

The following diagram illustrates the address and data phases of the transaction cycle.

Figure 52. Serial Configuration Transaction Protocol

A basic element of a transaction is called a phase. A transaction can contain either 2-phases or 3- phases depending

on the peripheral. Usually a write transaction is a 3-phase transaction specifying the slave address, internal address

and data. A read transaction is usually a 2-phase transaction comprised of a peripheral slave address phase and a

data phase. The read transaction likely was preceded by a 2-phase write transaction that included a peripheral slave

address phase and a peripheral internal address phase.

A phase consists of sequential data transmission of 8-bits that followed by an acknowledge bit. The source of the

acknowledge bit is the recipient of the previous 8 bits of data. The external peripheral will source the acknowledge

bit for slave and internal address phases as well as write data phases. The controller sources the acknowledge for

data read phases.

The peripheral Slave address phase contains a 7 bit slave ID as well as a R/W bit. The R/W bit indicates to the

peripheral whether or not the following phases are read or write transactions. R/W=1 indicates a read transaction

and R/W=0 indicates a write transaction.

The I2C Controller supports both the master arbitration protocol as well as the Slave stall protocol.

The master arbitration protocol is utilized in systems that have multiple master controllers. The master controller

monitors the input SDA line during the SCL high period to see if the data it sent is present on the external SDA line.

The SDA line is open-collector, so if another master is driving the SDA line low the input SDA will not match the

output SDA for a master that is floating SDA high. This master is deemed to have lost arbitration and will remove

itself from the transaction. Master arbitration only occurs during the slave address phase and the write data phases

(this is when the master drives the SDA line).

The slave peripheral has a mechanism to stall any part of the I2C transaction. This is done by pulling the

SCL line low. The master monitors the SCL input to see if it is held low after the master has driven SCL

high. If it is still low, it knows that a slave is stalling the operation and the master pauses until the SCL line

floats high (i.e. the slave releases SCL when it is ready for the next part of the transaction.

4.9.1 I2C Hardware Description

The hardware implementation for the serial controller block is fairly simple and only has a few internal blocks as

shown in the following diagram.

- - - - - - - - - - - - - - -

S1 7 6 2 1 0 A 7 6 2 1 0 A 7 6 2 1 0 A S2

Typical Write Sequence

Start

Acknowledge

Stop

Indicates whether the data transaction is a Read (“1”) or a Write (“0”)

Phase 1 Phase 2 Phase 3

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor48

Figure 53. I2C Hardware Architecture

The serial controller is mostly a single state machine that gets initiated by software “kicks”. The various phases of

the transaction are initiated by a software register access. The state machine initiates the appropriate hardware

protocol at the interface as dictated by the register access.

4.9.2 Programming Model

The serial controller will be used for two very common operations. Either the controller will be used to write to a

peripheral to configure the setup of the peripheral or it may be used to read from a register within the peripheral. The

following sections provide programming guidelines for these two scenarios.

4.9.2.1 Peripheral Write – Manual Mode

The following steps suggest an algorithm for programming a peripheral configuration.

• Initialize the three configuration registers.

• Write the slave ID to the slave address register along with read_write=0.

• Write the peripheral address to the target address register.

• Write the peripheral data to the target data register.

• Set the start bit in the control register.

• Wait until the acknowledge interrupt occurs.

• Set the stop bit in the control register.

• Wait until the stop interrupt occurs.

4.9.2.2 Peripheral Write – Automatic Mode

The following steps suggest an algorithm for programming a peripheral configuration. This mode of operation is

enabled by setting the auto_mode_ena bit in the config1 register

• Initialize the three configuration registers.

• Write the slave ID to the slave address register along with read_write=0.

• Write the peripheral address to the target address register.

• Write the peripheral data to the target data register.

• Set the start bit in the control register.

• Wait until the stop interrupt occurs.

scl

sda

De-

serializer

Interrupt

Generation

State

Machine

AHB

Interface

Registers

Serializer

Interrupt

AHB

I2C Block sys_clk domain

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 49

4.9.2.3 Peripheral Read – Manual Mode

The following steps suggest an algorithm for programming a peripheral configuration.

• Initialize the three configuration registers.

• Write the slave ID to the slave address register along with read_write=0.

• Write the peripheral address to the target address register.

• Set the start bit in the control register.

• Wait until the acknowledge interrupt occurs.

• Write the slave ID to the slave address register along with read_write=1.

• Set the start bit in the control register.

• Wait until the acknowledge interrupt occurs.

• Set the stop bit in the control register.

• Wait until the stop interrupt occurs.

• Read the configuration data from the slave data register.

4.9.2.4 Peripheral Read – Auto Mode

The following steps suggest an algorithm for programming a peripheral configuration. This mode of operation is

enabled by setting the auto_mode_ena bit in the config1 register

• Initialize the three configuration registers.

• Write the slave ID to the slave address register along with read_write=1.

• Write the peripheral address to the target address register.

• Set the start bit in the control register.

• Wait until the stop interrupt occurs.

• Read the configuration data from the slave data register.

I2C Control registers are described at 5.13, I2C Registers.

4.9.3 I2C Port Timing

Figure 54. I2C Port Timing

Table 20. I2C Port Timing

Parameter Symbol Min. Typ. Max. Unit

I2C port clock frequency (fSCL)t34 400 kHz

I2C port input setup time (tSU;DAT) t35 1001ns

I2C port input hold time (tHD;DAT)t360 ns

scl

sda (in)

sda (out)

t34

t35 t36

t37

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor50

4.10 Pulse Width Modulated Outputs

Two pulse width modulated (PWM) outputs are available as alternate pin functions. As shown in the following table

4.10.1 PWM Hardware Description

The Pulse Width Modulation block allows for generating digital signal with variable pulse width with the following

features:

• Control of working frequency from system clock (sys_clk) to system clock divided by 4096 (8- bit divider

followed by 1, 1/2, 1/4, 1/8 or 1/16)

• Control of period and pulse width through 16-bit registers (from 1 to 65536)

• One shot or free running with posted value updates

• Out signal inverter

• Out signal dead-zone generator through 8-bit register

The following diagram illustrates the architecture of the Pulse Width Modulation (PWM).

I2C port output delay time (tVD;DAT) t37 9001ns

1The I2C Controller design transitions signals at ¼ period intervals of the scl_clk, additionally the I/O pads are designed for

operating at >100 Mhz switching frequency, ensuring that the timing specifications of the I2C specification (NXP

Semiconductors Document UM10204, I2C-bus specification and user manual, Rev 5 – 9 October 2012) are met.

Example: fSCL = 400 kHZ , scl_clk period = 2500ns;

t35 = ¼ scl_clk period = 625ns ;

t37 = ¼ scl_clk period = 625ns

Table 21. PWM Function Pinout

Signal Alternate Function Pin Direction Pin Description

audio_fsr gpio[18] or pwm2 Bi-dir. Audio receive frame clock, GPIO or PWM

signal as alternate function;

sc_fcb gpio[57] or pwm1 Bi-dir. Smart card, GPIO or PWM signal as alternate

function;

Table 20. I2C Port Timing

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 51

Figure 55. PWM Hardware Architecture

The Tout0 frequency is determined by the following formula:

For Tout1, just replace the t0 by t1.

PWM Control registers are described at 5.14, PWM Registers.

4.10.2 PWM Programming Notes

4.10.2.1 Example

The following section provides some details on appropriate programming of the PWM using an example. The

following diagram illustrates a timeline for a particular PWM configuration.

prescaler + 1

/16

Control

Logic 1

Control

Logic 0

t1 _clk_sel

t0 _clk_sel

Dead-zone

t1 _inverter

dead_zone_length

t0_com_buffer

t0_count_buffer

t0_update

t0_start

t0_auto_reload

t1_com_buffer

t1_count_buffer

t1_update

t1_start

t1_auto_reload

sys_clk

PWM Block

tout0

tout1

Legend:

Signal

t0 _inverter dead_zone_en

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor52

The following events refer to the numbering in the above diagram

1. count=60, cmp=30, update=1, auto_reload=1, update=0. The update must be toggled from “1” to “0”. The

value of the next count and cmp can be set at step 3. In the case where these values have been set prior to

step 1, the update should be disabled. If the next value is set in the enable state, this next value goes into

the first value of count and cmp at the “start”.

2. start=1.

3. cmp=20. This can be set as soon as the start was issued in step 2. In the case where auto_reload is

enabled, the count is updated when the interrupt occurs so count and cmp must be set prior to the interrupt

event. If the cmp value is enough until the next reflection, it can be set after the interrupt.

4. cmp=10.

5. auto_reload=0.

6. start=0.

4.10.2.2 PWM as general timer

Another use of the PWM is as a general timer. For this scenario, the cmp value is deducted from the PWM timer.

The rest of the settings are identical to the PWM usage. For example to get an interrupt every 10msec (100hz) for

a 24 Mhz clock source, the following settings are required.

• 24 Mhz / 100hz = 240,000

• 240,000 = (prescaler + 1) x (1/Tn_clk_sel) x (count + 1)

• Prescaler=99, 1/Tn_clk_sel=16, count=149

4.10.2.3 PWM dead zones

Another PWM usage is to have dead zones. A dead-zone delays the low to high transition point. The following

diagram illustrates the concept.

count=3

cmp=1

manual update = 1

auto reload = 1

timer started

TOUTn

start bit =1 count=com auto-reload count=com timer is stopped

count_buffer

com_buffer

214

30 30 20 40 50

60 60 60

TOUTn

Interrupt

102100

interrupt request interrupt request

auto reload=0

count=2

cmp=0

manual update = 0

auto reload = 1

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 53

4.11 KeyPad Scan Interface

The SCP220x has an optional keyscan capability. The keyscan processor has four output scan ports and four input

scan ports to allow recognition of up to 16 keys.

The Keyscan Interface provides the following features:

• Programmable key scan and sense polarity

• Programmable scan time

• Programmable scan matrix

• Auto clearing of the sense value after it has been read

• Supports typing mode and gaming mode

Figure 54 shows the keyscan system implementation.

Figure 56. Keyscan Interface

Table 22 lists the SCP220x pin information for the Keyscan Interface. To enable the keyscan interface, the Alternate

Function register must be programmed accordingly.

Table 22. Keyscan Interface

Signal Keyscan Function Pin Direction Pin Description

reserved_14 gpio[45] or keyscan_out3 Bi-dir. GPIO or alternate function

TOUT0

TOUT0_DZ

scanout1

sensein2

sensein1

scanout1

scanout2

scanout3

scanout4

Tscan Tscan Tscan

scanout2

scanout3

sense value catch

pull-up

sensein3

sensein4

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor54

Keyscan control registers are described at 5.15, KeyScan Registers.

4.12 GPIOs and Alternate Functions

A number of external pins have additional GPIO functionality and possibly an alternate function as shown in GPIO

and Alternate Function List.

The “gpio enable” register controls whether the pin functions as a GPIO. For the pins that have also an alternate

function, the “alternate function enable” register selects the alternate function if the GPIO enable bit for that pin is

disabled.

NOTE

External pins labeled ‘reserved_#’ should only be used as GPIOs or as the

alternate function as the primary functionality is reserved and not intended for use

during normal operation. The SDK generates a firmware that handles the pin

function already.

The primary function, GPIO, alternate function is listed in 4.12.1, GPIO and Alternate Function List below.

The pinout is listed in Table 88 (SCP220x Pinout)

The GPIO control registers are described at 5.16, GPIO Registers

The PAD and I/O control registers are described at 5.3, PAD and I/O registers

The GPIO enable bits are listed in ,

The Alternate function enable bits are listed in Table 40., Alternate Function Enable Register

The PAD strength enable bits are listed in Table ,

The PAD Types are described below 4.12.2, PAD Type description

4.12.1 GPIO and Alternate Function List

reserved_13 gpio[44] or keyscan_out2 Bi-dir. GPIO or alternate function

reserved_12 gpio[43] or keyscan_out1 Bi-dir. GPIO or alternate function

reserved_11 gpio[42] or keyscan_out0 Bi-dir. GPIO or alternate function

reserved_10 gpio[41] or keyscan_in3 Bi-dir. GPIO or alternate function

reserved_9 gpio[40] or keyscan_in2 Bi-dir. GPIO or alternate function

reserved_8 gpio[39] or keyscan_in1 Bi-dir. GPIO or alternate function

reserved_7 gpio[38] or keyscan_in0 Bi-dir. GPIO or alternate function

Table 23. GPIOs and Alternate Functions Shared with External Pins

GPIO PIN - MAIN ALTERNATE POWER PAD TYPE PAD Resistor/Default

- dip_rs_p dip_hsync LVDD B PD/none

- dip_wen_p dip_vsync LVDD B PD/none

- spi1_sck_p mp2ts1_clk JVDD A PD/none

- spi1_rxd_p mp2ts1_d JVDD A PD/none

Table 22. Keyscan Interface

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 55

- spi1_ssn_p mp2ts1_sync JVDD C PU/PU

- spi1_txd_p mp2ts1_valid JVDD A PD/none

- sdram_clkn_p sdram_clk_fb RVDD B -

gpio00 Reserved_1 MVDD A PD/none

gpio01 sif_clkout_p SVDD B PD/none

gpio02 Reserved_2 MVDD A PD/PD

gpio03 dip_data_p[17] scl_sec LVDD B PD/none

gpio04 dip_data_p[16] sda_sec LVDD B PD/none

gpio05 dip_pclk_p LVDD B PD/none

gpio06 Reserved_3 pwi_clk MVDD A PD/none

gpio07 Reserved_4 pwi_data MVDD A PD/none

gpio08 Reserved_5 MVDD A PD/none

gpio09 Reserved_6 MVDD A PD/none

gpio10 nand_ale_p NVDD A PD/none

gpio11 nand_cle_p NVDD A PD/none

gpio12 nand_cen_p[0] mmcplus_clk NVDD C PU/PU

gpio13 nand_wen_p NVDD A PD/none

gpio14 nand_ren_p NVDD A PD/none

gpio15 dip_oen_p dip_blank LVDD B PD/none

gpio16 audio_clkr_p AUVDD A PD/none

gpio17 audio_dr_p AUVDD A PD/none

gpio18 audio_fsr_p pwm2_out AUVDD A PD/none

gpio19 audio_clkx_p AUVDD A PD/none

gpio20 audio_dx_p AUVDD A PD/none

gpio21 audio_fsx_p AUVDD A PD/none

gpio22 uart_txd_p JVDD A PD/none

gpio23 uart_rxd_p JVDD A PD/none

gpio24 dip_csn2_p LVDD D PU/PU

gpio25 dip_csn3_p LVDD D PU/PU

gpio26 spi_txd_p JVDD A PD/none

gpio27 spi_rxd_p JVDD A PD/none

gpio28 spi_ssn_p JVDD C PU/PU

Table 23. GPIOs and Alternate Functions Shared with External Pins

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor56

gpio29 spi_sck_p JVDD A PD/none

gpio30 mmc_data_p[0] SDVDD B PD/none

gpio31 mmc_data_p[1] SDVDD B PD/none

gpio32 mmc_data_p[2] SDVDD B PD/none

gpio33 mmc_data_p[3] SDVDD B PD/none

gpio34 mmc_cmd_p SDVDD B PD/none

gpio35 mmc_clk_p SDVDD D PU/PU

gpio36 scl_p SVDD B PD/none

gpio37 sda_p SVDD B PD/none

gpio38 Reserved_7 keyscan_in0 MVDD B PD/none

gpio39 Reserved_8 keyscan_in1 MVDD B PD/none

gpio40 Reserved_9 keyscan_in2 MVDD B PD/none

gpio41 Reserved_10 keyscan_in3 MVDD B PD/none

gpio42 Reserved_11 keyscan_out0 MVDD B PD/none

gpio43 Reserved_12 keyscan_out1 MVDD B PD/none

gpio44 Reserved_13 keyscan_out2 MVDD B PD/none

gpio45 Reserved_14 keyscan_out3 MVDD B PD/none

gpio46 dip_data_p[18] LVDD B PD/none

gpio47 dip_data_p[19] LVDD B PD/none

gpio48 dip_data_p[20] LVDD B PD/none

gpio49 dip_data_p[21] LVDD B PD/none

gpio50 dip_data_p[22] uart1_rxd LVDD B PD/none

gpio51 dip_data_p[23] uart1_txd LVDD B PD/none

gpio52 fodd_p SVDD B PD/none

gpio53 sif_gpio_p SVDD B PD/none

gpio54 dip_cpu_vsync_p LVDD B PD/none

gpio55 sc_clk_p SMVDD D PU/PU

gpio56 sc_rst_p SMVDD B PD/none

gpio57 sc_fcb_p pwm1_out SMVDD B PD/none

gpio58 sc_io_p SMVDD B PD/none

gpio59 sc_card_detect_p SMVDD B PD/none

gpio60 sc_power_on_p SMVDD B PD/none

Table 23. GPIOs and Alternate Functions Shared with External Pins

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 57

gpio61 sc_card_voltage_p spi_rxd3 SMVDD B PD/none

gpio62 - - - -/-

gpio63 - - - -/-

gpio64 - - - -/-

gpio65 - - - -/-

gpio66 - - - -/-

gpio67 - - - -/-

gpio68 - - - -/-

gpio69 - - - -/-

gpio70 nand_cen_p[1] mmcplus_cmd NVDD C PU/PU

gpio71 nand_cen_p[2] spi_rxd1 NVDD C PU/PU

gpio72 nand_cen_p[3] spi_rxd2 NVDD C PU/PU

gpio73 utmiotg_drvvbus_p AUVDD D PU/PU

gpio74 nand_data_p[0] mmcplus_data[0] NVDD A PD/none

gpio75 nand_data_p[1] mmcplus_data[1] NVDD A PD/none

gpio76 nand_data_p[2] mmcplus_data[2] NVDD A PD/none

gpio77 nand_data_p[3] mmcplus_data[3] NVDD A PD/none

gpio78 nand_data_p[4] mmcplus_data[4] NVDD A PD/none

gpio79 nand_data_p[5] mmcplus_data[5] NVDD A PD/none

gpio80 nand_data_p[6] mmcplus_data[6] NVDD A PD/none

gpio81 nand_data_p[7] mmcplus_data[7] NVDD A PD/none

gpio82 uart_cts_p spi_ssn1 JVDD A PD/none

gpio83 uart_rts_p spi_ssn2 JVDD A PD/none

gpio84 Reserved_15 spi_ssn3 MVDD A PD/none

gpio85 sdram_rdy_p RVDD B PD/none

gpio86 dip_csn0_p LVDD D PU/PU

gpio87 dip_csn1_p LVDD D PU/PU

gpio88 mp2ts_d_p JVDD A PD/n.a.

gpio89 mp2ts_clk_p JVDD - PD/n.a.

gpio90 mp2ts_valid_p JVDD A PD/n.a.

gpio91 mp2ts_sync_p JVDD A PD/n.a.

gpio92 - - - -/-

Table 23. GPIOs and Alternate Functions Shared with External Pins

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor58

4.12.2 PAD Type description

There are four types of hardware PAD for the GPIOs: A, B, C, D. The correspondence with the pin is listed in the

table above.

Following are each GPIO PAD type specifications at 50% transition and the corresponding measurement illustration

diagram.

4.12.2.1 GPIO pad type A specifications

gpio93 - - - -/-

gpio94 - - - -/-

gpio95 - - - -/-

Table 24. GPIO PAD type A specifications

Pad Type Drive Strength Parameter Load (pF) Min Typ Max Unit

A Low-drive tpLH 10 2 - 5 ns

25 3 - 7 ns

100 10 - 19 ns

200 18 - 35 ns

tpHL 10 2 - 5 ns

25 4 - 8 ns

100 11 - 23 ns

200 20 - 42 ns

High-drive tpLH 10 1 - 3 ns

25 2 - 4 ns

100 5 - 10 ns

200 8 - 16 ns

tpHL 10 1 - 3 ns

25 2 - 5 ns

100 6 - 12 ns

200 11 - 22 ns

Table 23. GPIOs and Alternate Functions Shared with External Pins

Interconnect and Communication

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 59

4.12.2.2 GPIO PAD type B specifications

4.12.2.3 GPIO PAD type C specifications

Table 25. GPIO PAD type B specifications

Pad Type Drive Strength Parameter Load (pF) Min Typ Max Unit

B Low-drive tpLH 10 2 - 4 ns

25 3 - 6 ns

100 5 - 11 ns

200 9 - 18 ns

tpHL 10 2 - 5 ns

25 3 - 6 ns

100 6 - 14 ns

200 11 - 24 ns

High-drive tpLH 10 2 - 4 ns

25 2 - 5 ns

100 4 - 8 ns

200 7 - 13 ns

tpHL 10 2 - 4 ns

25 2 - 5 ns

100 5 - 10 ns

200 8 - 16 ns

Table 26. GPIO pad type C specificatiopns

Pad Type Drive Strength Parameter Load (pF) Min Typ Max Unit

C Low-drive tpLH 10 2 - 5 ns

25 3 - 7 ns

100 10 - 19 ns

200 18 - 35 ns

tpHL 10 2 - 5 ns

25 4 - 8 ns

100 11 - 23 ns

200 20 - 42 ns

High-drive tpLH 10 1 - 3 ns

SCP220x ICP Family, Rev.2.1

Interconnect and Communication

Freescale Semiconductor60

4.12.2.4 GPIO PAD type D specifications

25 2 - 4 ns

100 5 - 10 ns

200 8 - 16 ns

tpHL 10 1 - 3 ns

25 2 - 5 ns

100 6 - 12 ns

200 11 - 22 ns

Table 27. GPIO pad type D specificatiopns

Pad Type Drive Strength Parameter Load (pF) Min Typ Max Unit

D Low-drive tpLH 10 2 - 4 ns

25 3 - 6 ns

100 5 - 11 ns

200 9 - 18 ns

tpHL 10 2 - 5 ns

25 3 - 6 ns

100 6 - 14 ns

200 11 - 24 ns

High-drive tpLH 10 2 - 4 ns

25 2 - 5 ns

100 4 - 8 ns

200 7 - 13 ns

tpHL 10 2 - 4 ns

25 2 - 5 ns

100 5 - 10 ns

200 8 - 16 ns

Table 26. GPIO pad type C specificatiopns

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 61

4.12.2.5 GPIO PAD Propagation Schematic

Figure 57. GPIO PAD Propagation Schematic

4.13 Production Test and System Signals

The following table lists the SCP220x pin information for system and test signals.

5Registers

In general, an application should use the SDK to use the blocks available on the chips. Most of the low level inter-

facing that requires register access is already available ready to use.

In case it is required to act directly on the registers here is the list of the main register groups. It is recommended to

use macro functions in the SDK to modify the values of the registers and in most cases the access is done through

Table 28. Production Test and System Singlas

Signal Pad

Resistor

Direction Pin Description

Clkin - Input Clock input to SCP220x from crystal, oscillator or

baseband processor

Clkout - Output Output for crystal connection or ground if Clkin is

driven by oscillator

resetN - Input Chip reset

hw_deep_secure - Input set to ‘0’, reserved

bootmode - Input Selects how the part will startup after reset. Must

be set to ‘1’.

testmode PD Input Enable testmode (manufacture test only)

tck PU Input JTAG test clock

rtck - Output JTAG return clock

tdi PU Input JTAG test data input

tdo - Output JTAG test data output

Ntrst PD Input JTAG test reset

tms PU Input JTAG test mode

Propagation delays Low to High and High to Low

tpLH tpHL

VDD/2

VDD/2Pad Output

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor62

the register/bit name rather than directly with the register value.

When writing boot loader code however it is necessary to access the register directly.

5.1 Memory Map

The following table describes the address map.

Table 29. Memory Map

Start Address End Address Peripheral ARM1 HSEL

0x0000_0000 0x0000_003f Reserved Reserved

0x0000_0000 0x1fff_ffff External Memory 21

0x2000_0000 0x2fff_ffff Section 5.6, Memory Controller 21

0x3000_0000 0x3fff_ffff Reserved Reserved

0x4000_0000 0x43ff_ffff DIP Port 4

0x4400_0000 0x47ff_ffff BitBlt 23

0x4800_0000 0x4fff_ffff BitBlt_mini 24

0x5000_0000 0x53ff_ffff USB OTG 5

0x5400_0000 0x57ff_ffff Reserved Reserved

0x5800_0000 0x5Bff_ffff Reserved Reserved

0x5c00_0000 0x5fff_ffff Reserved Reserved

0x6000_0000 0x67ff_ffff Section 5.7, NAND Interface

Registers Description

0x6800_0000 0x6Bff_ffff Section 5.11, MMC/SD Control

Registers

0x6c00_0000 0x6fff_ffff Section 5.12, MMCPlus Control

Registers

0x7000_0000 0x73ff_ffff Multi-channel DMA 9

0x7400_0000 0x77ff_ffff SPI1 30

0x7800_0000 0x7fff_ffff Reserved Reserved

0x8000_0000 0x87fff_ffff Reserved Reserved

0x8800_0000 0x8fff_ffff Reserved Reserved

0x9000_0000 0x9fff_ffff Reserved Reserved

0x9400_0000 0x97ff_ffff Reserved Reserved

0x9800_0000 0x9fff_ffff Reserved Reserved

0xA000_0000 0xA3ff_ffff Section 5.9, SPI Registers 14

0xA400_0000 0xA7ff_ffff Reserved Reserved

0xA800_0000 0xAfff_ffff Reserved Reserved

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 63

The following table decribes the memory mapping through the APB bridge containing most of the peripherals

interfaces.

The system register map is summarized below and described in the following sections.

System registers are located from address: 0xd003_0000.

0xB000_0000 0xBfff_ffff Sensor Interface 16

0xC000_0000 0xC3ff_ffff Reserved Reserved

0xC400_0000 0xC7ff_ffff Reserved Reserved

0xc800_0000 0xcbff_ffff Reserved Reserved

0xcc00_0000 0xcfff_ffff Reserved Reserved

0xd000_0000 0xdfff_ffff APB bridge 19

0xe000_0000 0xefff_ffff Reserved Reserved

0xf000_0000 0xffff_efff Reserved Reserved

0xffff_f000 0xffff_ffff Reserved Reserved

Table 30. Sub-peripherals Memory Map

Start Address End Address Sub-peripherals

0xd000_0000 0xd000_ffff Section 5.10, Audio Registers

0xd001_0000 0xd001_ffff Section 5.8, UART Control Registers

0xd002_0000 0xd002_ffff Section 5.15, KeyScan Registers

0xd003_0000 0xd003_ffff System Registers

0xd004_0000 0xd004_ffff Section 5.13, I2C Registers

0xd005_0000 0xd005_ffff OS Timer 1

0xd006_0000 0xd006_ffff OS Timer 2

0xd007_0000 0xd007_ffff OS Timer 3

0xd008_0000 0xd008_ffff RTC Timer

0xd009_0000 0xd009_ffff Section 5.14, PWM Registers

0xd00a_0000 0xd00a_ffff Section 5.16, GPIO Registers

0xd00b_0000 0xd00b_ffff Smart Card

0xd00c_0000 0xd00c_ffff Reserved

0xd00d_0000 0xd00d_ffff OS Timer 4

0xd00e_0000 0xd00e_ffff Uart2

0xd00f_0000 0xd00f_ffff Reserved

Table 29. Memory Map

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor64

5.2 Clock Configuration Registers

If necessary, it is possible to change the clocks configuration, exercise caution doing so especially when modifying

the system clocks. It is recommended in any case to change clocks configuration via the SDK.

Here is the list of registers, please refer to 3.3, Clock Configuration for details:

• System Clock Configuration Register

• AP Clock Configuration Register

• Clock Update Register

Table 31. System Registers

Section 5.2.1, System Clock Configuration Register 0x00 RW

Section 5.2.2, AP Clock Configuration Register 0x04 RW

Section 5.2.3, Clock Update Register 0x08 RW

Section 5.4.3, System Reset Register 0x18 RW

Section 5.4.1, System Power Down 0x1c RW

Section 5.5.1, Chip ID Register 0x28 RO

Section 5.3.1, Alternate Function Enable Register 0x30 RW

Section 5.3.2, Drive Strength Register 0x80 RW

Drive strength2 0x84 RW

Drive strength3 0x88 RW

Section 5.3.3, PAD Resistor Enable 0x8C RW

PAD resistor enable2 0x90 RW

PAD resistor enable3 0x94 RW

PAD resistor enable4 0x98 RW

Section 5.4.2, System power down1 0xCC RW

Section 5.4.4, System Reset1 Register 0xd0 RW

Section 5.2.7, Interface PLL Select Register 0xF8 RW

IF PLL divide 0xFC RW

XGA PLL divide 0x100 RW

SIF PLL divide 0x104 RW

MEM PLL divide 0x108 RW

AP PLL divide 0x10C RW

USB PLL divide 0x110 RW

TVOUT PLL divide 0x114 RW

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 65

• Interface Clock Configuration Register

• DIP Clock Configuration Register

• Memory Clock Configuration Register

• Interface PLL Select Register

• PLL Divide Register

5.2.1 System Clock Configuration Register

Table 32. System Clock Configuration Register

System Clock Configuration

Address: 0x00 Reset = 0xcc0_0000 Type: RW

Name Bit Function Reset

arm2_clk_en_div 31-30 Both ARMs have a clock enable that effectively tells the ARM926EJ-S

processor the frequency of the system bus. The primary ARM926EJ-S

processor is able to get the appropriate divide value from the sys_clk_div

field but the secondary ARM926EJ-S processor needs a separate field to

define this value since it can operate at a different frequency than the

primary ARM926EJ-S processor . This field is similar to the sys_clk_div

field and must be programmed based on the difference between the ARM2

clock and the system clock frequencies. Note: this field does not set the

frequency of the system clock.

11 : sys_clk = arm2_clk/4

10 : sys_clk = arm2_clk/3

01 : sys_clk = arm2_clk/2

00 : sys_clk = arm2_clk

tcm_clk_sel 29 The primary ARM926EJ-S processor TCM can be used as either TCM

memory or system memory (connected to the bus). The clocking source

and physical interface change for each application. This bit selects the

application. The sys_clk_config makes the switch over occur.

0 = system memory

1 = tcm memory

arm_clk2_div 28-26 This divide value is applied to the PLL output clock to generate the

secondary ARM926EJ-S processor clock.

0,7 : arm_clk = FPLLOUT /12

6 : arm_clk = FPLLOUT /10

5 : arm_clk = FPLLOUT /8

4 : arm_clk = FPLLOUT /6

3 : arm_clk = FPLLOUT /4

2 : arm_clk = FPLLOUT /3

1 : arm_clk = FPLLOUT /2

pll_sel 25 This field selects the PLL source for the system clock generation.

0 = sys pll

1 = ap pll

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor66

5.2.2 AP Clock Configuration Register

arm_clk_div 24-22 This divide value is applied to the PLL output clock to generate the primary

ARM926EJ-S processor clock.

0,7 : arm_clk = FPLLOUT /12

6 : arm_clk = FPLLOUT /10

5 : arm_clk = FPLLOUT /8

4 : arm_clk = FPLLOUT /6

3 : arm_clk = FPLLOUT /4

2 : arm_clk = FPLLOUT /3

1 : arm_clk = FPLLOUT /2

sys_clk_div 21-20 This divide value is applied to the ARM926EJ-S processor clock to

generate the system clock. The system clock runs all internal logic except

the ARM926EJ-S processor and array processor.

11 : sys_clk = arm_clk/4

10 : sys_clk = arm_clk/3

01 : sys_clk = arm_clk/2

00 : sys_clk = arm_clk

Range 18-16 This field must be set according the configured post reference divide

frequency.

0=bypass, 1=10-16 Mhz, 2=16-26 Mhz, 3=26-42 Mhz, 4=42-65 Mhz,

5=65-104 Mhz, 6=104-166 Mhz, 7=166 Mhz+

NO 15-13 PLL Output Divider value. 0

NR 12-8 PLL Input Divider value. Power-up default of this field is controlled by

configuration settings on the EBI address bus.

NF 7-0 PLL Feedback divider value. 0

Table 33. AP Clock Configuration Register

AP Clock Configuration

Address: 0x04 Reset = 0x2000_0000 Type: RW

Name Bit Function Reset

Table 32. System Clock Configuration Register

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 67

5.2.3 Clock Update Register

mem_clk_div 31-29 This divide value is applied to the PLL output clock to generate the

memory 2x clock. The “sys_clk_config” kicker applies the divide value.

This is only pertinent if the power-up config of the memory clock source is

the “sync” mode, otherwise the divide value defaults to /2 of the memory

PLL. An additional /2 is also applied so that both a clk and clk_2x are

generated. The clk frequency (not the clk_2x) must match the system

clock frequency.

0,7 : arm_clk = FPLLOUT /12

6 : arm_clk = FPLLOUT /10

5 : arm_clk = FPLLOUT /8

4 : arm_clk = FPLLOUT /6

3 : arm_clk = FPLLOUT /4

2 : arm_clk = FPLLOUT /3

1 : arm_clk = FPLLOUT /2

28-23

ap_clock_disable 22 1 = The AP PLL is powered down and put in bypass mode

0 = The AP PLL is enabled

21-19

Range 18-16 This field must be set according the configured post reference divide

frequency.

0=bypass, 1=10-16 Mhz, 2=16-26 Mhz, 3=26-42 Mhz, 4=42-65 Mhz,

5=65-104 Mhz, 6=104-166 Mhz, 7=166 Mhz+

NO 15-13 PLL Output Divider value. 0

NR 12-8 PLL Input Divider value. Power-up default of this field is controlled by

configuration settings on the EBI address bus.

NF 7-0 PLL Feedback divider value. 0

Table 34. Clock Update Register

Clock Update

Address: 0x08 Reset = 0x30 Type: RW

Name Bit Function Reset

31-7

sys_pll_select_cfg 6 When a ’1’ is written to this bit, the PLL selection is applied to the system

PLL. This bit is self clearing after the pll selection has been applied. When

switching to a new PLL source, the new PLL must already be properly

configured and locked.

0x0

ap_pll_lock_status 5 This bit is a read only bit and reflects the "locking" status of the AP PLL. 0

= no lock, 1 = lock.

0x1

Table 33. AP Clock Configuration Register

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor68

5.2.4 Interface Clock Configuration Register

sys_pll_lock_status 4 This bit is a read only bit and reflects the "locking" status of the system PLL.

0 = no lock, 1 = lock.

0x1

sys_clk_config 2 When a ’1’ is written to this bit, the clock divide settings for the system,

ARM926EJ-S processor and mem_clk_div are applied as well as the

tcm_clk_sel setting. This bit is self clearing after the clock divide has been

applied

0x0

ap_pll_config 1 When a ’1’ is written to this bit, the AP PLL configuration process is initiated

and the AP PLL is re-configured with the divider values programmed into

the AP Clock configuration register. This bit is self clearing after the AP PLL

has locked.

0x0

sys_pll_config 0 When a ’1’ is written to this bit, the system PLL configuration process is

initiated and the system PLL is re-configured with the divider values

programmed into the system Clock configuration register. This bit is self

clearing after the system PLL has locked.

0x0

Table 35. Interface Clock Configuration Register

Interface Clock Configuration

Address: 0x3C Reset = 0x10_0000 Type: RW

Name Bit Function Reset

Reserved 31-21 Reserved

pll_lock_status 20 This bit is a read only bit and reflects the “locking” status of the PLL. 0 =

no lock, 1 = lock.

clock_disable 19 1 = The PLL is powered down and put in bypass mode

0 = The PLL is enabled

Range 18-16 This field must be set according the configured post reference divide

frequency.

0=bypass, 1=10-16 Mhz, 2=16-26 Mhz, 3=26-42 Mhz, 4=42-65 Mhz,

5=65-104 Mhz, 6=104-166 Mhz, 7=166 Mhz+

NO 15-13 PLL Output Divider value. 0

NR 12-8 PLL Input Divider value. 0

NF 7-0 PLL Feedback divider value. 0

Table 34. Clock Update Register

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 69

5.2.5 DIP Clock Configuration Register

5.2.6 Memory Clock Configuration Register

Table 36. DIP Clock Configuration Register

DIP Clock Configuration

Address: 0x38 Reset = 0xa8147 Type: RW

Name Bit Function Reset

Reserved 31-22 Reserved

pll_lock_status 20 This bit is a read only bit and reflects the “locking” status of the PLL. 0 =

no lock, 1 = lock.

clock_disable 19 1 = The PLL is powered down and put in bypass mode

0 = The PLL is enabled

Range 18-16 This field must be set according the configured post reference divide

frequency.

0=bypass, 1=10-16 Mhz, 2=16-26 Mhz, 3=26-42 Mhz, 4=42-65 Mhz,

5=65-104 Mhz, 6=104-166 Mhz, 7=166 Mhz+

NO 15-13 PLL Output Divider value. d4

NR 12-8 PLL Input Divider value. d1

NF 7-0 PLL Feedback divider value. d71

Table 37. Memory Clock Configuration Register

Memory Clock Configuration

Address: 0x4C Reset = 0x10_0000 Type: RW

Name Bit Function Reset

31-22

ddr_dll_disable 21 Some applications may not require the DDR DLLs. This bit will put the

DLLs in the powered down state.

1 = The DLLs are powered down

0 = The DLLs are enabled

pll_lock_status 20 This bit is a read only bit and reflects the “locking” status of the PLL. 0 =

no lock, 1 = lock.

clock_disable 19 1 = The PLL is powered down and put in bypass mode

0 = The PLL is enabled

Range 18-16 This field must be set according the configured post reference divide

frequency.

0=bypass, 1=10-16 Mhz, 2=16-26 Mhz, 3=26-42 Mhz, 4=42-65 Mhz,

5=65-104 Mhz, 6=104-166 Mhz, 7=166 Mhz+

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor70

5.2.7 Interface PLL Select Register

NO 15-13 PLL Output Divider value. 0

NR 12-8 PLL Input Divider value. 0

NF 7-0 PLL Feedback divider value. 0

Table 38. Interface PLL Select Register

Interface PLL Select

Address: 0xF8 Reset = 0x1800 Type: RW

Name Bit Function Reset

31-28

tvout_clk_gate 27 This field controls the clock gating cell between the PLL clock source and the

clock divide circuitry. If the PLL or ref_clk_sel is being updated, the clock

gating cell must be activated first.

0 = normal operation. Clock output is not gated.

1 = Clock output is gated.

0x0

usb_clk_gate 26 This field controls the clock gating cell between the PLL clock source and the

clock divide circuitry. If the PLL or ref_clk_sel is being updated, the clock

gating cell must be activated first.

0 = normal operation. Clock output is not gated.

1 = Clock output is gated.

0x0

ap_clk_gate 25 This field controls the clock gating cell between the PLL clock source and the

clock divide circuitry. If the PLL or ref_clk_sel is being updated, the clock

gating cell must be activated first.

0 = normal operation. Clock output is not gated.

1 = Clock output is gated.

0x0

mem_clk_gate 24 This field controls the clock gating cell between the PLL clock source and the

clock divide circuitry. If the PLL or ref_clk_sel is being updated, the clock

gating cell must be activated first.

0 = normal operation. Clock output is not gated.

1 = Clock output is gated.

0x0

sif_clk_gate 23 This field controls the clock gating cell between the PLL clock source and the

clock divide circuitry. If the PLL or ref_clk_sel is being updated, the clock

gating cell must be activated first.

0 = normal operation. Clock output is not gated.

1 = Clock output is gated.

0x0

xga_clk_gate 22 This field controls the clock gating cell between the PLL clock source and the

clock divide circuitry. If the PLL or ref_clk_sel is being updated, the clock

gating cell must be activated first.

0 = normal operation. Clock output is not gated.

1 = Clock output is gated.

0x0

Table 37. Memory Clock Configuration Register

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 71

5.2.8 PLL Divide Register

if_clk_gate 21 This field controls the clock gating cell between the PLL clock source and the

clock divide circuitry. If the PLL or ref_clk_sel is being updated, the clock

gating cell must be activated first.

0 = normal operation. Clock output is not gated.

1 = Clock output is gated.

0x0

tvout_ref_clk_sel 20-18 This field selects the PLL clock source.

0 = IF PLL, 1 = AP PLL, 2 = SYS PLL, 3=DIP PLL, 4=MEM PLL

0x0

usb_ref_clk_sel 17-15 This field selects the PLL clock source.

0 = IF PLL, 1 = AP PLL, 2 = SYS PLL, 3=DIP PLL, 4=MEM PLL

0x0

ap_ref_clk_sel 14-12 This field selects the PLL clock source.

0 = IF PLL, 1 = AP PLL, 2 = SYS PLL, 3= DIP PLL, 4=MEM PLL

0x1

mem_ref_clk_sel 11-9 This field selects the PLL clock source.

0 = IF PLL, 1 = AP PLL, 2 = SYS PLL, 3= DIP PLL, 4=MEM PLL

0x4

sif_ref_clk_sel 8-6 This field selects the PLL clock source.

0 = IF PLL, 1 = AP PLL, 2 = SYS PLL, 3= DIP PLL, 4=MEM PLL

0x0

xga_ref_clk_sel 5-3 This field selects the PLL clock source.

0 = IF PLL, 1 = AP PLL, 2 = SYS PLL, 3= DIP PLL, 4=MEM PLL

0x0

if_ref_clk_sel 2-0 This field selects the PLL clock source.

0 = IF PLL, 1 = AP PLL, 2 = SYS PLL, 3= DIP PLL, 4=MEM PLL

0x0

Table 39. PLL Divide Register

PLL Divide

Address: 0xFC-114 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-9 Reserved

divide_status 8 This is a read only field that provides an indicator as to when the programmed

divide value has been applied. The divide value is applied when the “counter”

passes through a “0” value so that the resultant output clock remains clean.

Depending on the current count value and the previous clock frequency, there

may be a delay before the new divide value gets applied to the output clock.

This bit gets set when this register is written and slef clears after the new

divide value has been applied.

0x0

Reserved 7-6 Reserved

Table 38. Interface PLL Select Register

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor72

5.3 PAD and I/O registers

5.3.1 Alternate Function Enable Register

pll_divide 5-0 This field contains an integer divide that is applied to the selected ref_clk to

produce the appropriate peripheral clock.

0 = div1

1 = div2

2 = div3

…

63 = div64

0x0

Table 40. Alternate Function Enable Register

Alternate Function Enable

Address: 0xd003_0030 Reset = 0 Type: RW

Name Bit Function Reset

reserved 31-29 reserved

gps_ena5 28 0 = main function selected (mp2ts_clk)

1 = alternate function selected (gps_clk)

mp2ts_clk = gps_clk

gps_ena4 27 0 = main function selected (uart_rts)

1 = alternate function selected (gps_m2)

uart_rts = gps_m2

gps_ena3 26 0 = main function selected (mp2ts_sync)

1 = alternate function selected (gps_m1)

mp2ts_sync = gps_m1

gps_ena2 25 0 = main function selected (mp2ts_valid)

1 = alternate function selected (gps_m0)

mp2ts_valid = gps_m0

gps_ena1 24 0 = main function selected (mp2ts_d)

1 = alternate function selected (gps_s)

mp2ts_d = gps_s

second_uart 23 0 = main function selected (dip_data[23:22])

1 = alternate function selected (second uart)

dip_data22 = uart1_rxd

dip_data23 = uart1_txd

spi_mp2ts 22 0 = main function selected (2nd spi interface)

1 = alternate function selected (2nd mp2ts interface)

spi1_sck = mp2ts_clk

spi1_ssn = mp2ts_sync

spi1_txd = mp2ts_valid

spi1_rxd = mp2ts_d

Table 39. PLL Divide Register

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 73

pwi interface 21 0 = main function selected (bb_audio_fsx,bb_audio_clkx)

1 = alternate function selected (pwi_clk,pwi_data)

reserved_3 = pwi_clk

reserved_4 = pwi_data

spi_device3 20 0 = main function selected (nand)

1 = alternate function selected (spi_device3)

reserved_15 = spi_ssn3

sc_card_voltage = spi_rxd3

spi_device2 19 0 = main function selected (nand)

1 = alternate function selected (spi_device2)

uart_rts = spi_ssn2

nand_cen3 = spi_rxd2

spi_device1 18 0 = main function selected (nand)

1 = alternate function selected (spi_device1)

uart_cts = spi_ssn1

nand_cen2 = spi_rxd1

nand_or_mmc_plus 17 0 = main function selected (nand)

1 = alternate function selected (mmc_plus)

mmc_plus _data[7:0] = nand_data[7:0]

mmc_plus _clk = nand_cen0

mmc_plus _cmd = nand_cen1

uart_txd 16 0 = main function selected (uart_txd)

1 = alternate function selected (dip_ref_clk)

spi_sck 15 0 = main function selected (mmc_data3)

1 = alternate function selected (ac_clk)

spi_ssn 14 0 = main function selected (mmc_data2)

1 = alternate function selected (sys_clk)

spi_rxd 13 0 = main function selected (mmc_data1)

1 = alternate function selected (mem_ref_clk)

spi_txd 12 0 = main function selected (mmc_data0)

1 = alternate function selected (if_ref_clk)

reserved_14 11 0 = main function selected (reserved_14)

1 = alternate function selected (keyscan3_out)

reserved_13 10 0 = main function selected (reserved_13)

1 = alternate function selected (keyscan2_out)

reserved_12 9 0 = main function selected reserved_12)

1 = alternate function selected (keyscan1_out)

reserved_11 8 0 = main function selected (reserved_11)

1 = alternate function selected (keyscan0_out)

reserved_10 7 0 = main function selected (reserved_10)

1 = alternate function selected (keyscan3_in)

reserved_9 6 0 = main function selected (reserved_9)

1 = alternate function selected (keyscan2_in)

Table 40. Alternate Function Enable Register

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor74

5.3.2 Drive Strength Register

reserved_8 5 0 = main function selected (reserved_8)

1 = alternate function selected (keyscan1_in)

reserved_7 4 0 = main function selected (reserved_7)

1 = alternate function selected (keyscan0_in)

dip_data17 3 0 = main function selected (dip_data17)

1 = alternate function selected (scl_sec)

dip_data16 2 0 = main function selected (dip_data16)

1 = alternate function selected (sda_sec)

audio_fsr 1 0 = main function selected (audio_fsr)

1 = alternate function selected (pwm_output2)

sc_fcb 0 0 = main function selected (sc_fcb)

1 = alternate function selected (pwm_output1)

Table 41. Drive Strength Register

Drive Strength 1

Address: 0xd003_0080 Reset = 0 Type: RW

Name Bit Function Reset

drive_strength[31-0] 31-0 A number of the external PADs have configurable drive strength. This register

allows software to configure the drive strength as low or as high. The

following table maps the drive_strength bits to the corresponding PAD that

they control.

0 = low drive strength

1 = high drive strength

Drive Strength 2

Address: 0xd003_0084 Reset = 0 Type: RW

Name Bit Function Reset

drive_strength[63-32] 31-0 A number of the external PADs have configurable drive strength. This register

allows software to configure the drive strength as low or as high. The

following table maps the drive_strength bits to the corresponding PAD that

they control.

0 = low drive strength

1 = high drive strength

Drive Strength 3

Address: 0xd003_0088 Reset = 0 Type: RW

Name Bit Function Reset

Table 40. Alternate Function Enable Register

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 75

The table below gives the correspondence Drive Strength register bit to pin.

drive_strength[95-64] 31-0 A number of the external PADs have configurable drive strength. This register

allows software to configure the drive strength as low or as high. The

following table maps the drive_strength bits to the corresponding PAD that

they control.

0 = low drive strength

1 = high drive strength

Table 42. Drive Strength register bit to pin correspondence

Bit Pin Bit Pin Bit Pin Bit Pin

0 scl_p 24 mclk_p 48 spi_sck_p 72 sc_fcb_p

1 sda_p 25 audio_clkr

49 spi_ssn_p 73 sc_io_p

2 sif_clkout_

26 audio_fsr_

50 spi_txd_p 74 sc_card_d

etect_p

3 27 audio_clkx

51 fodd_p 75 sc_power_

on_p

4 28 audio_dr_p 52 sif_gpio_p 76 sc_card_v

oltage_p

5 29 audio_dx_

53 nand_ren_

77 nand_cen_

6 30 audio_fsx_

54 nand_wen

78 nand_cen_

7 reserved_1 31 reserved_3 55 nand_ale_

79 nand_cen_

8 32 reserved_4 56 nand_cle_

9 33 reserved_5 57 dip_data_p

10 reserved_7 34 reserved_6 58 dip_data_p

Table 41. Drive Strength Register

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor76

5.3.3 PAD Resistor Enable

Bit Pin Bit Pin Bit Pin Bit Pin

11 reserved_8 35 dip_data_p

[15:0]

59 dip_data_p

12 Reserved_

36 dip_csn0_

dip_csn1_

dip_wen_p

dip_rs_p

60 dip_data_p

13 reserved_1

37 mmc_clk_p 61 dip_data_p

14 reserved_1

38 mmc_cmd

62 dip_data_p

15 reserved_1

39 mmc_data

_p3

63 dip_data_p

16 reserved_1

40 mmc_data

_p2

64 dip_data_p

88 Utmiotg_dr

vvbus_p

17 reserved_1

41 mmc_data

_p1

65 dip_csn2_

89 spi1_rxd_p

18 42 mmc_data

_p0

66 dip_csn3_

90 spi1_sck_p

19 reserved_2 43 nand_cen_

67 dip_oen_p 91 spi1_ssn_p

20 sdram

control

44 nand_data

_p[7:0]

68 dip_pclk_p 92 spi1_txd_p

21 sdram_clk

45 uart_rxd_p 69 dip_cpu_vs

ync_p

93 uart_cts_p

22 ebi_addr_p

[12:0]

46 uart_txd_p 70 sc_clk_p 94 uart_cts_p

23 ebi_data_p

31:0

47 spi_rxd_p 71 sc_rst_p 95 reserved_1

Table 43. PAD Resistor Enable

PAD Resistor Enable 1

Address: 0xd003_008C Reset = 0x0801_003c Type: RW

Name Bit Function Reset

Table 42. Drive Strength register bit to pin correspondence

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 77

The table indicates whether the PAD has a pull-up or pull-down with the PU/PD nomenclature in the bit location field.

pad_resistor_ena

[31-0]

31-0 A number of the external PADs have configurable pull-up/pull-down

resistors in the PAD. This register allows software to enable the

resistor. The following table maps these register bits to the

corresponding PADs that they control.

0 = PAD resistor disabled

1 = PAD resistor enabled

0x0801_003c

PAD Resistor Enable 2

Address: 0xd003_0090 Reset = 0x0008_4f02 Type: RW

Name Bit Function Reset

pad_resistor_ena

[63-32]

31-0 A number of the external PADs have configurable pull-up/pull-down

resistors in the PAD. This register allows software to enable the

resistor. The following table maps these register bits to the

corresponding PADs that they control.

0 = PAD resistor disabled

1 = PAD resistor enabled

0x0008_4f02

PAD Resistor Enable 3

Address: 0xd003_0094 Reset = 0x01e7_f0d0 Type: RW

Name Bit Function Reset

pad_resistor_ena

[95-64]

31-0 A number of the external PADs have configurable pull-up/pull-down

resistors in the PAD. This register allows software to enable the

resistor. The following table maps these register bits to the

corresponding PADs that they control.

0 = PAD resistor disabled

1 = PAD resistor enabled

0x01e7_f0d0

PAD Resistor Enable 4

Address: 0xd003_0098 Reset = 0x0000_00bf Type: RW

Name Bit Function Reset

pad_resistor_ena

[117-96]

31-0 A number of the external PADs have configurable pull-up/pull-down

resistors in the PAD. This register allows software to enable the

resistor. The following table maps these register bits to the

corresponding PADs that they control.

0 = PAD resistor disabled

1 = PAD resistor enabled

0x0000_00bf

Table 43. PAD Resistor Enable

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor78

Table 44. PAD has a pull-up or pull-down

Bit Pin Bit Pin Bit Pin Bit Pin Bit Pin

0-PD sda_p 24 reserved 48-P

fodd_p 72 reserved 97-P

dip_data_p

1-PD sif_clkout_

25 reserved 49-P

mclk_p 73 reserved 98-P

dip_data_p

2 reserved 26 reserved 50-P

sif_gpio_p 74 reserved 99-P

dip_data_p

3 reserved 27-P

mmc_clk_p 51-P

fclk_p

rclk_p

pclk_p

sensor_dat

a_p

75-P

scl_p 100-

dip_data_p

4-PU utmiotg_dr

vvbus_p

28-P

mmc_cmd

52 reserved 76-P

ntrst_p 101-

dip_data_p

5 reserved 29-P

mmc_data

_p3

53-P

nand_data[

7:0]

77-P

tck_p 102-

dip_cpu_vs

ync_p

6-PD sdram_rdy

30-P

mmc_data

_p2

54-P

dip_data_p

78-P

tdi_p 103-

sc_clk_p

7 reserved 31-P

mmc_data

_p1

55-P

dip_data_p

79-P

tms_p 104-

sc_rst_p

8 reserved 32-P

mmc_data

_p0

56-P

dip_data_p

80-P

dip_data_p

105-

sc_fcb_p

9 reserved 33-P

nand_cen_

57-P

dip_data_p

81-P

dip_data_p

106-

sc_io_p

10 reserved 34-P

nand_ren_

58-P

dip_data_p

82-P

dip_data_p

107-

sc_card_d

etect_p

11 reserved 35-P

nand_wen

59-P

dip_data_p

83-P

dip_data_p

108-

sc_power_

on_p

12 reserved 36-P

nand_ale_

60-P

dip_data_p

84-P

dip_data_p

109-

sc_card_v

oltage_p

13 reserved 37-P

nand_cle_

61-P

dip_data_p

85-P

nand_cen_

110-

dip_data_p

14 reserved 38-P

uart_rxd_p 62-P

dip_data_p

[15:12]

86-P

nand_cen_

111 reserved

15 reserved 39-P

uart_txd_p 63-P

dip_oen_p 87-P

nand_cen_

16 reserved 40-P

dip_csn0_

64-P

dip_pclk_p 88-P

spi1_ssn_p

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 79

5.4 Reset and Clock Gating

The system reset bits are spread out into two registers: System Reset and System Reset1.

The system power down bits are spread out into two registers: System Power Down and System Power Down1.

5.4.1 System Power Down

This timing generation block has clock gating logic for most of the internal blocks. This register provides software

with a mechanism to gate the clock of any block that is not required for the application at hand. This will reduce power

for certain applications. When a block has its clock gated the block is “disabled” and unusable.

17-P

audio_clkr

41-P

dip_csn1_

65-P

mp2ts_clk_

mp2ts_d_p

mp2ts_vali

d_p

mp2ts_syn

c_p

89-P

spi1_txd_p

18-P

audio_fsr_

42-P

dip_csn2_

66 reserved 90-P

spi1_rxd_p

19-P

audio_clkx

43-P

dip_csn3_

67 reserved 91-P

spi1_sck_p

20-P

audio_dr_p 44-P

spi_rxd_p 68 reserved 92-P

uart_cts_p

21-P

audio_dx_

45-P

spi_sck_p 69 reserved 93-P

uart_rts_p

22-P

audio_fsx_

46-P

spi_ssn_p 70 reserved 94 reserved

23 reserved 47-P

spi_txd_p 71 reserved 95 reserved

Table 45. System Power Down

System Power Down

Address: 0x d003_001c Reset = 0xffed_d5ff Type: RW

Name Bit Function Reset

Reserved 31 Reserved 1

mp2ts1_pdown 30 When this bit is written “1” the peripheral has its clock gated. 1

spi1_pdown 29 When this bit is written “1” the peripheral has its clock gated. 1

Pwi_pdown 28 When this bit is written “1” the peripheral has its clock gated. 1

Mmcplus_pdown 27 When this bit is written “1” the peripheral has its clock gated. 1

Table 44. PAD has a pull-up or pull-down

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor80

sequencer_pdown 26 When this bit is written “1” the peripheral has its clock gated. This powers

down the GOC buffers and decoding” circuitry (VLD).

crypto_pdown 25 When this bit is written “1” the peripheral has its clock gated. 1

Smart_card_pdown 24 When this bit is written “1” the peripheral has its clock gated. 1

Rotator_pdown 23 When this bit is written “1” the peripheral has its clock gated. 1

H264_loop_pdown 22 When this bit is written “1” the peripheral has its clock gated. 1

bitblt_mini_pdown 21 When this bit is written “1” the peripheral has its clock gated. 1

ebi_pdown 20 When this bit is written “1” the peripheral has its clock gated. 0

bitblt_pdown 19 When this bit is written “1” the peripheral has its clock gated. 1

vld_pdown 18 When this bit is written “1” the peripheral has its clock gated. 1

cmem_if_pdown 17 When this bit is written “1” the peripheral has its clock gated. 0

ac_pdown 16 When this bit is written “1” the high speed cmem clock is gated. 1

mmc_pdown 15 When this bit is written “1” the peripheral has its clock gated. 1

dip_pdown 14 When this bit is written “1” the peripheral has its clock gated. 1

hpi_pdown 13 When this bit is written “1” the peripheral has its clock gated. 0

usb_pdown 12 When this bit is written “1” the peripheral has its clock gated. 1

nand_pdown 11 When this bit is written “1” the peripheral has its clock gated. 0

sif_pdown 10 When this bit is written “1” the peripheral has its clock gated. 1

spi_pdown 9 When this bit is written “1” the peripheral has its clock gated. 0

cmem_dma_pdown 8 When this bit is written “1” the peripheral has its clock gated. 1

entropy_pdown1 7 When this bit is written “1” the peripheral has its clock gated. 1

bm_pdown 6 When this bit is written “1” the peripheral has its clock gated. This powers

down everything but the “decoding” circuitry (VLD).

be_pdown 5 When this bit is written “1” the peripheral has its clock gated. 1

multi_dma_pdown 4 When this bit is written “1” the peripheral has its clock gated. 1

Mpeg2_ts_pdown 3 When this bit is written “1” the peripheral has its clock gated. 1

uart_pdown 2 When this bit is written “1” the peripheral has its clock gated. 1

audio_pdown 1 When this bit is written “1” the peripheral has its clock gated. 1

i2c_pdown 0 When this bit is written “1” the peripheral has its clock gated. 1

Table 45. System Power Down

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 81

5.4.2 System power down1

5.4.3 System Reset Register

This register provides a mechanism for software to reset any or all of the internal hardware components. Software

controls the assertion and de-assertion of the reset for all peripherals except the ARM926EJ-S processor and the EBI

block.

Table 46. System Power Down1

System Power Down1

Address: 0xd003_00cc Reset = 0xffff_ff3e Type: RW

Name Bit Function Reset

Reserved 31:8 Reserved 0xffff_ff

Sys_cmem_if_pdown 7 When this bit is written “1” the low speed cmem clock is gated. 0

system_pdown 6 When this bit is written “1” some of the system related blocks get their clock

gated – boot_loader, keypad, pwm, gpio

entropy_pdown2 5 When this bit is written “1” the peripheral has its clock gated. 1

tcm_pdown 4 When this bit is written “1” the peripheral has its clock gated. 1

Reserved 3 Reserved 1

sbist_pdown 2 When this bit is written “1” the peripheral has its clock gated. 1

uart1_pdown 1 When this bit is written “1” the peripheral has its clock gated. 1

arm2_pdown 0 When this bit is written “1” the peripheral has its clock gated. 0

Table 47. System Reset Register

System Reset

Address: 0xd003_0018 Reset = 0 Type: RW

Name Bit Function Reset

suicide 31 Writing a “1” to this bit will pulse the internal global reset. The entire chip will

be reset as if the external reset signal was asserted. The bit is self resetting

and always returns “0” when read.

mp2ts1_rst 30 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

spi1_rst 29 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

pwi_rst 28 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

mmcplus_rst 27 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor82

sequencer_rst 26 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

crypto_rst 25 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

Smart_card_rst 24 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

Rotator_rst 23 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

H264_loop_rst 22 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

bitblt_mini_rst 21 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

ebi_rst 20 Writing a “1” to this bit will pulse the EBI block reset. The bit is self resetting

and always returns “0” when read.

bitblt_rst 19 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

vld_rst 18 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

cmem_if_rst 17 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

ac_rst 16 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

mmc_rst 15 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

dip_rst 14 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

hpi_rst 13 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

usb_rst 12 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

nand_rst 11 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

sif_rst 10 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

spi_rst 9 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

cmem_dma_rst 8 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

entropy_rst 7 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

Table 47. System Reset Register

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 83

5.4.4 System Reset1 Register

5.5 Miscellaneous

5.5.1 Chip ID Register

bm_rst 6 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

be_rst 5 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

multi_dma_rst 4 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

Mpeg2_ts_rst 3 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

uart_rst 2 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

audio_rst 1 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

i2c_rst 0 When this bit is written “1” the peripheral in held in reset until this bit is written

“0”.

Table 48. System Reset1 Register

System Reset1

Address: 0xd003_00d0 Reset = 0 Type: RW

Name Bit Function Reset

Reserved 31-4 Reserved

axi_fabric_rst 3 When this bit is written “1” the peripheral is held in reset. 0

sbist_rst 2 When this bit is written “1” the peripheral is held in reset. 0

uart1_rst 1 When this bit is written “1” the peripheral is held in reset. 0

arm2_rst 0 When this bit is written “1” the peripheral is held in reset. 0

Table 49. Chip ID Register

chip ID

Address: 0xd003_0028 Reset = 0 Type: RO

Table 47. System Reset Register

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor84

Table 50.

5.6 Memory Controller

5.6.1 Memory Controller Register Description

Name Bit Function Reset

Reserved 31-7 Reserved

chip_id 6-4 This field reflects the bond-out option for the jtag_sel_p PADs. It can be used

by software to differentiate different chips for marketing purposes.

chip_rev_num 3-0 This field reflects the silicon revision of the chip. 0

memc_status 0x000 RO

memc_cmd 0x004 WO

direct_cmd 0x008 WO

memory_cfg 0x00C RW

refresh_prd 0x010 RW

cas_latency 0x014 RW

Tdqss 0x018 RW

Tmrd 0x01C RW

Tras 0x020 RW

Tr c 0 x 0 2 4 R W

Trcd 0x028 RW

Trfc 0x02C RW

Tr p 0 x 0 3 0 RW

Trrd 0x034 RW

Tw r 0 x 0 3 8 RW

Twtr 0x03C RW

Txp 0x040 RW

Txsr 0x044 RW

Tesr 0x048 RW

memory_cfg2 0x04C RW

memory_cfg3 0x050 RW

reserved 0x054-0xFF RW

Table 49. Chip ID Register

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 85

5.6.2 memc_status register

This register provides information on the configuration of the memory controller and also on the state of the memory

controller.

id_0_cfg 0x100 RW

id_1_cfg 0x104 RW

id_2_cfg 0x108 RW

id_3_cfg 0x10C RW

id_4_cfg 0x110 RW

id_5_cfg 0x114 RW

id_6_cfg 0x118 RW

id_7_cfg 0x11C RW

id_8_cfg 0x120 RW

id_9_cfg 0x124 RW

id_10_cfg 0x128 RW

id_11_cfg 0x12C RW

id_12_cfg 0x130 RW

id_13_cfg 0x134 RW

id_14_cfg 0x138 RW

id_15_cfg 0x13C RW

reserved 0x140-0x1FF RW

chip_0_cfg 0x200 RW

reserved 0x204-0xFDF RW

Periph_id_0 0xFE0 RO

Periph_id_1 0xFE4 RO

Periph_id_2 0xFE8 RO

Periph_id_3 0xFEC RO

Pcell_id_0 0xFF0 RO

Pcell_id_1 0xFF4 RO

Pcell_id_2 0xFF8 RO

Pcell_id_3 0xFFC RO

memc_status

Address: 0x000 Reset = 0xe34 Type: RO

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor86

5.6.3 memc_cmd register

This registers controls the state of the FSM within the controller. By writing to this register the FSM can be traversed.

If a new command is received to change state and a previous command has not be completed, the APB3 pready

signal is held LOW (bus cycle is waited) until the new command can be carried out.

Name Bit Function Reset

Reserved 31-13 Reserved

Memory_banks1 12 See bit 9. d1

Exclusive_monitors 11-10 Returns the number of exclusive access monitor resources implemented in

the controller.

00=0 monitor, 01=1 monitor, 10=2 monitors , 11=4 monitors

Memory_banks0 9 This returns the maximum number of banks that the controller supports.

00 = 2 banks

01 = 4 banks

10,11 = reserved

Memory_chips 8-7 This returns the number of chip selects that the controller supports.

00=1 chip, 01=2 chips, 10=3 chips, 11=4 chips

Memory_ddr 6-4 This returns the type of memory controller.

000=SDR sdram, 001=DDR sdram, 011=mobile DDR sdram

If mobile DDR sdram or SDR sdram is supported, the cas_half_cycle bit at

address offset 0x14 is ignored.

d11

Memory_width 3-2 This returns the width of the external memory.

00=16bit, 01=32bit, 10=64bit

Memc_status 1-0 This returns the state of the memory controller.

00=config, 01=ready, 10=paused, 11=low power

Memc_cmd

Address: 0x004 Reset = 0x0 Type: WO

Name Bit Function Reset

Reserved 31-3 Reserved

Memc_cmd 2-0 Changes the state of the memory controller.

000=go, 001=sleep, 010=wakeup, 011=pause, 100=configure, 111=active

pause

Active_pause puts the controller into a paused state without draining the arbiter

queue. This enables you to enter low-power mode to change configuration

settings such as memory frequency or timing register values without requiring

co-ordination between masters in a multi-master system.

If the controller is put into low-power mode after using the active_pause

command, you may not remove power from the controller because this results in

data loss and violation of the AXI protocol.

The controller does not issue refreshes while in the config state. It is, therefore,

recommended that you use the low-power mode to make register updates

because this ensures that the memory is put into self-refresh rather than entering

the config state when the memory contains valid data.

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 87

5.6.4 direct_cmd register

This register passes commands to the external memory. The configuration of this register enables you to write to

any type of mode register supported by the external memory device and also to generate NOP, prechargeall and

auto refresh commands. This register therefore enables any initialization sequence that an external memory device

might require. The only timing information associated with this register are the command delays defined in the timing

registers. Therefore, if an initialization sequence requires additional delays between commands, they must be timed

by the master driving the initialization sequence. The register can only be written to in the config or low-power state.

5.6.5 memory_cfg register

This register configures the memory. It can only be read/written in the config or low-power state.

Direct_cmd

Address: 0x08 Reset = 0c0 Type: WO

Name Bit Function Reset

Reserved 31-23 Reserved

ext_memory_cmd 22 See bit 19-18. d0

Chip_number 21-20 Bits mapped to external memory chip address bits. d0

Memory_cmd 19-18 Determines the command required.

000=prechargeall, 001=auto-refresh, 010=modereg or extended modereg

access, 011=NOP,100=deep power down

Bank_addr 17-16 Bits mapped to external memory bank address bits when command is

modereg access.

Reserved 15-14 Reserved

Addr_13_to_0 13-0 Bits mapped to external memory address bits [13:0] when command is

modereg access.

Memory_cfg

Address: 0x0C Reset = 0x10020 Type: RW

Name Bit Function Reset

sr_enable 31 Auto self refersh entry. d0

fp_time 30-24 Force precharge timeout count. d0

fp_enable 23 Force precharge enable. d0

Active_chips 22-21 Enables the refresh command generation for the number of memory

chips. It is only possible to generate commands up to and including the

number of chips in the configuration that the memc_status register

defines.

00=1 chip, 01=2 chips, 10=3 chips, 11=4 chips

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor88

5.6.6 refresh_prd register

This sets the memory refresh period. It can only be read/written to in the config or low-power state.

5.6.7 cas_latency register

This sets the cas_latency in memory clock cycles. It can only be read/written to in the config or low-power state.

Qos_master_bits 20-18 Encodes the 4 bits of the 8 bit AXI ARID that select one of the 16 QOS

values.

000=ARID[3:0], 001=ARID[4:1], 010=ARID[5:2], 011=ARID[6:3],

100=ARID[7:4]

Memory_burst 17-15 Encodes the number of data accesses that are performed to the SDRAM

for each read or write command.

000=burst1, 001=burst2, 010=burst4, 011=burst8, 100=burst16

The value must also be programmed into the SDRAM mode register

using the direct_cmd register at offset 0x8 and must match it.

Stop_mem_clk 14 When enabled, the memory clock is dynamically stopped when not

performing an access to the SDRAM.

Auto_power_down 13 When this is set, the memory interface automatically places the SDRAM

into the power-down state by de-asserting CKE when the command FIFO

has been empty for the PowerDownPrd memory clock cycles.

Power_down_prd 12-7 Number of memory clock cycles for auto power-down of the SDRAM. d0

Ap_bit 6 Encodes the position of the auto-precharge bit in the memory address.

0=addr10, 1=addr8

Row_bits 5-3 Encodes the number of the AXI address that comprise the row address.

000=11bits, 001=12bits, 010=13bits, 011=14bits, 100=15bits,

101=16bits

The combination of row size, column size, BRC/RBC and memory width

must ensure that neither the MSB of the row address nor the MSB of the

bank address exceed address range [27:0].

Column_bits 2-0 Encodes the number of the AXI address that comprise the column

address.

000=8bits, 001=9bits, 010=10bits, 011=11bits, 100=12bits

Refresh_prd

Address: 0x10 Reset = 0xa60 Type: RW

Name Bit Function Reset

Reserved 31-15 Reserved

Refresh_prd 14-0 Memory refresh period in memory clock cycles. 0xa60

Cas_latency

Address: 0x14 Reset = 0x6 Type: RW

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 89

5.6.8 Tdqss register

It can only be read/written to in the config or low-power state.

5.6.9 Tmrd register

It can only be read/written to in the config or low-power state.

5.6.10 Tras Register

It can only be read/written to in the config or low-power state.

Name Bit Function Reset

Reserved 31-4 Reserved

Cas_latency 3-1 CAS latency in memory clock cycles. d3

Cas_half_cycle 0 Encodes whether the CAS latency is half a memory clock cycle more than

the value given in bite[3:1].

0=zero cycle offset (is forced in MDDR and SDR mode)

1=half cycle offset to value in [3:1]

Tdqss

Address: 0x18 Reset = 0x1 Type: RW

Name Bit Function Reset

Reserved 31-2 Reserved

Tdqss 1-0 Write to DQS in memory clock cycles. 0x1

Tmrd

Address: 0x1C Reset = 0x2 Type: RW

Name Bit Function Reset

Reserved 31-7 Reserved

Tmrd 6-0 Sets mode register command time in memory clock cycles. 0x2

Tras

Address: 0x20 Reset = 0x7 Type: RW

Name Bit Function Reset

Reserved 31-4 Reserved

Tras 3-0 Sets RAS to precharge delay in memory clock cycles. 0x7

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor90

5.6.11 Trc Register

It can only be read/written to in the config or low-power state.

5.6.12 Trcd Register

It can only be read/written to in the config or low-power state.

5.6.13 Trfc Register

It can only be read/written to in the config or low-power state.

5.6.14 Trp Register

It can only be read/written to in the config or low-power state.

Tdqss

Address: 0x24 Reset = 0xB Type: RW

Name Bit Function Reset

Reserved 31-4 Reserved

Trc 3-0 Sets active bank x to active bank x delay in memory clock cycles. 0xB

Trcd

Address: 0x28 Reset = 0x1D Type: RW

Name Bit Function Reset

Reserved 31-6 Reserved

Schedule_Trcd 5-3 Sets the RAS to CAS minimum delay in aclk cycles – 3. 0x5

Trcd 2-0 Sets the RAS to CAS minimum delay in memory clock cycles. 0x5

Trfc

Address: 0x2C Reset = 0x212 Type: RW

Name Bit Function Reset

Reserved 31-10 Reserved

Schedule_Trfc 9-5 Sets the auto-refresh command time in aclk cycles - 3. 0x10

Trfc 4-0 Sets the auto-refresh command time in memory clock cycles. 0x12

Trp

Address: 0x30 Reset = 0x1d Type: RW

Name Bit Function Reset

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 91

5.6.15 Trrd Register

It can only be read/written to in the config or low-power state.

5.6.16 Twr Register

It can only be read/written to in the config or low-power state.

5.6.17 Twtr Register

It can only be read/written to in the config or low-power state.

5.6.18 TxP Register

It can only be read/written to in the config or low-power state.

Reserved 31-6 Reserved

Schedule_Trp 5-3 Sets the precharge to RAS delay in aclk cycles - 3. 0x5

Trp 2-0 Sets the precharge to RAS delay in memory clock cycles. 0x5

Trrd

Address: 0x34 Reset = 0x2 Type: RW

Name Bit Function Reset

Reserved 31-4 Reserved

Trrd 3-0 Sets active bank x to active bank y delay in memory clock cycles. 0x2

Twr

Address: 0x38 Reset = 0x3 Type: RW

Name Bit Function Reset

Reserved 31-3 Reserved

Twr 2-0 Sets the write to precharge delay in memory clock cycles. 0x3

Twtr

Address: 0x3C Reset = 0x2 Type: RW

Name Bit Function Reset

Reserved 31-3 Reserved

Twtr 2-0 Sets the write to read delay in memory clock cycles. 0x2

Txp

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor92

5.6.19 Txsr Register

It can only be read/written to in the config or low-power state.

5.6.20 Tesr Register

It can only be read/written to in the config or low-power state.

5.6.21 Memory_cfg2 Register

It can only be read/written to in the config or low-power state.

Address: 0x40 Reset = 0x1 Type: RW

Name Bit Function Reset

Reserved 31-8 Reserved

Txp 7-0 Sets the exit power-down command time in memory clock cycles. 0x1

Txsr

Address: 0x44 Reset = 0xa Type: RW

Name Bit Function Reset

Reserved 31-8 Reserved

Txsr 7-0 Sets the exit self-refresh command time in memory clock cycles. 0xa

Tesr

Address: 0x48 Reset = 0x14 Type: RW

Name Bit Function Reset

Reserved 31-8 Reserved

Tesr 7-0 Sets the self-refresh command time in memory clock cycles. 0x14

Memory_cfg2

Address: 0x4c Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-11 Reserved

Read_delay 10-9 Sets the latency in clocks cycles of the PAD interface. 0x0

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 93

5.6.22 Memory_cfg3 Register

It can only be read/written to in the config or low-power state.

5.6.23 ld_x_cfg Registers

It can only be read/written to in the config or low-power state. For reference, the Ids for the masters are as follows:

Id = 0x00 – bridge from primary AHB control bus

Id = 0x20 – bridge from USB master

Id = 0x40 – bridge from ARM926EJ-S processor instruction bus

Id = 0x60 – MC-dma

Id = 0x80 – rotator

Id = 0xa0 – bitblt

Id = 0xc0 – bitblt_mini

Id = 0xe0 – bridge from secondary AHB control bus

memory_type 8-6 Sets the memory type.

000 = SDR

001 = DDR

010 = eDRAM

011 = LPDDR

0x0

memory width 5-4 Sets the width of the external memory.

00 = 16 bit

01 = 32 bit

10 = 64 bit

11 = reserved

0x0

cke_init 3 Sets the level of the cke output after reset. 0x0

dqm_init 2 Sets the level of the dqm outputs after reset. 0x0

a_gt_m_sync 1 Required to be set high when aclk and mclk are running synchronous but

when aclk running faster than mclk.

0x0

sync 0 Set high when aclk and mclk are synchronous. 0x0

Memory_cfg3

Address: 0x50 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-12 Reserved

prescale 11-3 Prescaler counter value. 0x0

max_outs_refs 2-0 Maximum number of outstanding refresh commands. 0x0

Id_x_cfg

Address: 0x100-0x13c Reset = 0x0 Type: RW

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor94

5.6.24 chip_0_cfg Register

It can only be read/written to in the config or low-power state.

5.6.25 Peripheral Identification 0-3 registers

Name Bit Function Reset

Reserved 31-10 Reserved

Qos_max 9-2 Sets a maximum QoS. 0x0

Qos_min 1 Sets a minimum Qos. 0x0

Qos_enable 0 Enables a QoS value to be applied to memory reads from address IS x. 0x0

Chip_0_cfg

Address: 0x200 Reset = 0xff00 Type: RW

Name Bit Function Reset

Reserved 31-17 Reserved

Brc_n_rbc 16 Selects the memory organization as decoded from the AXI address.

0=row,bank,column organization

1= bank,row,column organization

0x0

Address_match 15-8 Comparison value for AXI address bits [31:24] to determine the chip that

is selected.

0xFF

Address_mask 7-0 The mask for the AXI address bite [31:24] to determine the chip that is

selected.

1=corresponding address bit is to be used for comparison.

0x0

Peripheral_id0

Address: 0xfe0 Reset = 0x40 Type: RO

Name Bit Function Reset

Reserved 31-8 Reserved

Part_number 7-0 Primecell part number. 0x40

Peripheral_id1

Address: 0xfe4 Reset = 0x13 Type: RO

Name Bit Function Reset

Reserved 31-8 Reserved

designer 7-4 Primecell designer. 0x1

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 95

5.6.26 Primecell Identification 0-3 registers

Part_number 3-0 Primecell part number. 0x3

Peripheral_id2

Address: 0xfe8 Reset = 0x14 Type: RO

Name Bit Function Reset

Reserved 31-8 Reserved

revision 7-4 Primecell revision number. 0x1

designer 3-0 Primecell designer. 0x4

Peripheral_id3

Address: 0xfec Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-4 Reserved

Customer_mod 3-0 Customer Modified number. 0x0

Pcell_id0

Address: 0xff0 Reset = 0xD Type: RO

Name Bit Function Reset

Reserved 31-8 Reserved

Id_number 7-0 Id_number 0xD

Pcell_id1

Address: 0xff4 Reset = 0xF0 Type: RO

Name Bit Function Reset

Reserved 31-8 Reserved

Id_number 7-0 Id_number 0xF0

Pcell_id2

Address: 0xff8 Reset = 0x5 Type: RO

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor96

5.7 NAND Interface Registers Description

5.7.1 NAND Register Map

The register map is summarized below and described in the following sections.

Name Bit Function Reset

Reserved 31-8 Reserved

Id_number 7-0 Id_number 0x5

Pcell_id3

Address: 0xffc Reset = 0xB1 Type: RO

Name Bit Function Reset

Reserved 31-8 Reserved

Id_number 7-0 Id_number 0xB1

Table 51. NAND Register Map

Interrupt Source 0x00 RO

Interrupt Mask 0x04 RW

Interrupt Clear 0x08 WO

Interface Timing 0x0C RW

NAND Configuration 0x10 RW

NAND Action 0x14 RW

NAND Command 0x18 RW

NAND Address 0x1C RW

NAND Address (extended) 0x20 RW

NAND Read 0x24 RO

NAND Write 0x28 WO

NAND Status 0x2C RO

NAND Simple ECC result 0x30-0x3C RO

NAND Generated Simple ECC 0x40-0x5C RO

FIFO status 0x60 RO/WO

FIFO flag Configuration 0x64 RW

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 97

5.7.2 Interrupt Source Register

The interrupt source register contains the raw unmasked interrupts and can be used for polling purposes (instead

of the external interrupt pin) or for determining which interrupt(s) have caused the external interrupt pin to assert.

RS ECC config 0x68 RW

RS ECC Read Parity1 0x6C RW

RS ECC Read Parity2 0x70 RW

RS ECC Read Parity3 0x74 RW

RS ECC Write Parity1 0x78 RO

RS ECC Write Parity2 0x7C RO

RS ECC Write Parity3 0x80 RO

RS ECC Status 0x84 RO

reserved 0x88-0xfff

transmit FIFO 0x1000-0x1fff WO

receive FIFO 0x2000-0x2fff RO

Table 52. Interrupt Source Register

Interrupt Source Register

Address: 0x00 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-15 Reserved

corrected_data_done 14 This interrupt is asserted (if using the Reed Solomon ECC) when the

corrected data for a 512 byte block has been write to the input FIFO.

0x0

read_ecc_complete 13 Indicates that the Reed Solomon ECC engine has finished checking the

last read 512 byte block. The RS ECC status register will now contain the

ECC results for that read block.

0x0

write_par_complete 12 Indicates that the Reed Solomon ECC engine has generated the write

parity and it is available in the write parity registers.

0x0

nand_block_write 11 Indicates that a NAND block write operation is completed 0x0

nand_block_read 10 Indicates that a NAND block read operation is completed 0x0

tx_pop_error 9 asserted when the transmit FIFO experiences an overrun condition or

misaligned access. This error is from the perspective of the external

interface.

0x0

Table 51. NAND Register Map

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor98

5.7.3 Interrupt Mask Register

The interrupt mask register provides a mechanism to individually mask one or more of the interrupt sources.

rx_push_error 8 asserted when the receive FIFO experiences an underrun condition or

misaligned access. This error is from the perspective of the external

interface.

0x0

dma_pop_error 7 asserted when the receive FIFO experiences an underrun condition or

misaligned access. This error is from the perspective of the internal APB

bus.

0x0

dma_push_error 6 asserted when the transmit FIFO experiences an overrun condition or

misaligned access. A misaligned access can occur if the width of the write

has changed from a previous access. For example, if byte writes have

previously been used, the number of writes may be non-multiples of 32 bits.

If a 32 bit write now occurs, this is a misaligned access because the byte

pointers in the FIFO are not pointing to byte ’0’. This error is from the

perspective of the internal APB bus.

0x0

rx_ff 5 asserted when the receive FIFO has become full 0x0

rx_hf 4 asserted when the receive FIFO level (amount of bytes in the FIFO) is

above the software configured “half” empty level.

0x0

rx_fe 3 asserted when the receive FIFO has become NOT empty 0x0

tx_ff 2 asserted when the transmit FIFO has become NOT full 0x0

tx_hf 1 asserted when the transmit FIFO level (amount of space available) is above

the software configured “half” full level.

0x0

tx_fe 0 asserted when the transmit FIFO has become empty 0x0

Table 53. Interrupt Mask Register

Interrupt Mask Register

Address: 0x04 Reset = 0xFFFF_FFFF Type: RW

Name Bit Function Reset

Reserved 31-15 Reserved

corrected_data_done 14 Masks the interrupt. 1=mask, 0=unmask. 0x1

read_ecc_complete 13 Masks the interrupt. 1=mask, 0=unmask. 0x1

write_par_complete 12 Masks the interrupt. 1=mask, 0=unmask. 0x1

nand_block_write 11 Masks the interrupt. 1=mask, 0=unmask. 0x1

Table 52. Interrupt Source Register

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 99

5.7.4 Interrupt Clear Register

The interrupt clear register provides the mechanism for clearing the raw interrupt sources. Writing a „1. to the

interrupt bit location will clear the interrupt.

nand_block_read 10 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_pop_error 9 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_push_error 8 Masks the interrupt. 1=mask, 0=unmask. 0x1

dma_pop_error 7 Masks the interrupt. 1=mask, 0=unmask. 0x1

dma_push_error 6 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_ff 5 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_hf 4 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_fe 3 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_ff 2 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_hf 1 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_fe 0 Masks the interrupt. 1=mask, 0=unmask. 0x1

Table 54. Interrupt Clear Register

Interrupt Clear Register

Address: 0x08 Reset = 0x0 Type: WO

Name Bit Function Reset

Reserved 31-15 Reserved

corrected_data_done 14 Clears the interrupt when written ‘1’. 0x0

read_ecc_complete 13 Clears the interrupt when written ‘1’. 0x0

write_par_complete 12 Clears the interrupt when written ‘1’. 0x0

nand_block_write 11 Clears the interrupt when written ‘1’. 0x0

nand_block_read 10 Clears the interrupt when written ‘1’. 0x0

tx_pop_error 9 Clears the interrupt when written ‘1’. 0x0

rx_push_error 8 Clears the interrupt when written ‘1’. 0x0

dma_pop_error 7 Clears the interrupt when written ‘1’. 0x0

dma_push_error 6 Clears the interrupt when written ‘1’. 0x0

rx_ff 5 Clears the interrupt when written ‘1’. 0x0

rx_hf 4 Clears the interrupt when written ‘1’. 0x0

Table 53. Interrupt Mask Register

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor100

5.7.5 Interface Timing

All timing parameters refer to increments of the internal reference clock and a value of .0. means 1x refclk, a value

of .1. means 2x refclk, etc.

rx_fe 3 Clears the interrupt when written ‘1’. 0x0

tx_ff 2 Clears the interrupt when written ‘1’. 0x0

tx_hf 1 Clears the interrupt when written ‘1’. 0x0

tx_fe 0 Clears the interrupt when written ‘1’. 0x0

Table 55. Interface Timing

Interface Timing

Address: 0x0C Reset = 0x01001000 Type: RW

Name Bit Function Reset

Chip_select_sel 31-28 The nand interface supports 4 external chip selects (of which only one can

be active at any one time). This “one-hot” field indicates which external chip

select is active. The chip select that is active is turned on and off by the

controlling bits in the NAND Action register.

0001 – chip select 0 selected

0010 – chip select 1 selected

0100 – chip select 2 selected

1000 – chip select 3 selected

Any other value will disabled all chip selects.

0x0

t7 27-24 Indicates the number of system clocks from NAND_CLE/NAND_ALE

inactive to NAND_ALE/ NAND_CLE active. Also indicates the number of

system clocks from NAND_ALE inactive to NAND_WE/NAND_RE active. A

value of ‘0’ is invalid for this field.

0x1

t6 23-20 Indicates the number of system clocks for the NAND_RE inactive pulse width 0x0

t5 19-16 Indicates the number of system clocks for the NAND_RE active pulse width 0x0

t4 15-12 Indicates the number of system clocks for the NAND_WE inactive pulse

width. A value of ‘0’ is invalid for this field.

0x1

t3 11-8 Indicates the number of system clocks from NAND_WE inactive to

NAND_CLE inactive

0x0

t2 7-4 Indicates the number of system clocks for the NAND_WE active pulse width 0x0

t1 3-0 Indicates the number of system clocks from NAND_CLE active to NAND_WE

active

0x0

Table 54. Interrupt Clear Register

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 101

5.7.6 NAND configuration

5.7.7 NAND Action

Table 56. NAND Configuration

NAND Configuration

Address: 0x10 Reset = 0x0 Type: RW

Name Bit Function Reset

nand_read_ena 31 The “NAND Read” register initiates an external access when the register is

read. There may be circumstances where this is undesirable (i.e. debug).

This bit will disable the operation of that register. When operation is disabled

a read of the “NAND Read” register will complete but the data will be invalid.

0 = “NAND Read” register accesses do not initiate external NAND cycles.

1 = Normal operation for “NAND Read” register accesses.

0x0

nand_if_ena 30 Enables the internal state machine as well as the external PADs for the

control signals.

0 = interface disabled

1 = interface enabled

0x0

ecc_ena 28 Enables the writing (for block writes) and checking (for block reads) of ECC.

Refer to the hardware description for a more detailed explanation of ECC

generation and checking. This enable bit is only pertinent to the “simple” ECC

method.

0x0

addr_size 27-24 Indicates how many bytes are associated with an address transaction. 0x0

spare_size 23-16 Indicates the number of bytes in the spare or redundant area of the NAND

Flash.

0x0

page_size 15-0 Indicates the number of bytes in the page of data associated with the NAND

flash.

0x0

Table 57. NAND Action

NAND Action

Address: 0x14 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-4 Reserved

write_kick 3 Initiates a block write transaction. The NAND hardware interface will do a

series of writes that totals the "page_size" + "ecc_size" + "spare_size". Once

completed, the NAND_page_write interrupt is asserted. This action will

commence after this bit is set and data is present in the transmit FIFO. The

bit is self resetting and always returns 0 when read.

0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor102

5.7.8 NAND command

read_kick 2 Initiates a block read transaction. The NAND hardware interface will do a

series of reads that totals the "page_size" + "ecc_size" + "spare_size". Once

completed, the NAND_page_read interrupt is asserted. This action will

commence immediately after this bit is set. Software must ensure that the

NAND device is available for a page read operation prior to issuing the "kick".

The bit is self resetting and always returns 0 when read.

0x0

ce_dis 1 Setting this bit to ’1’ de-asserts the NAND Flash chip enable. This operation

must be done after NAND accesses are completed and the NAND Flash is

effectively idle. The bit is self resetting and always returns 0 when read.

0x0

ce_ena 0 Setting this bit to ’1’ asserts the NAND Flash chip enable. This operation

must be done before any NAND Flash reading or writing is initiated. The bit

is self resetting and always returns 0 when read.

0x0

Table 58. NAND command

NAND Command

Address: 0x18 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-8 Reserved

command 7-0 This register contains and initiates a command cycle to the NAND Flash.

Writing a command to the register initiates an external command access.

Reading the register will provide the value of the previous command that was

issued.

0x0

Table 57. NAND Action

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 103

5.7.9 NAND address

This register contains and initiates a series of address cycles to the NAND Flash. The number of address cycles

initiated is controlled by the "addr_size" field in the NAND configuration register. If the number of address bytes is

greater than 4, writing to this register does not initiate any external cycles. Instead the write to the extended NAND

address register initiates the external address cycles. Reading the register will provide the value of the previous

address that was issued.

5.7.10 NAND address (extended)

5.7.11 NAND Read

Table 59. NAND Address

NAND Address

Address: 0x1C Reset = 0x0 Type: RW

Name Bit Function Reset

addr3 31-24 4th address byte 0x0

addr2 23-16 3rd address byte 0x0

addr1 15-8 2nd address byte 0x0

addr0 7-0 1st address byte 0x0

Table 60. NAND address (extended)

NAND Address (extended)

Address: 0x20 Reset = 0x0 Type: RW

Name Bit Function Reset

addr7 31-24 8th address byte 0x0

addr6 23-16 7th address byte 0x0

addr5 15-8 6th address byte 0x0

addr4 7-0 5th address byte 0x0

Table 61. NAND Read

NAND Read

Address: 0x24 Reset = 0x0 Type: RO

Name Bit Function Reset

31-16

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor104

5.7.12 NAND Write

5.7.13 NAND Status

This register contains status information associated with NAND read activity. ECC generation and checking is done

on 256 byte blocks. Error results are stored for each 256 byte block (for instance if the NAND page size is 2048 bytes

then there are 8 result fields and error bits that are pertinent to this activity).

read_data 15-0 This register, when read will initiate a read cycle to the NAND Flash. It is

intended as a status polling mechanism and must be used in conjunction with

appropriate command and address sequencing. The MSB is only applicable

if 16 bit NAND Flash is enabled.

0x0

Table 62. NAND Write

NAND Write

Address: 0x28 Reset = 0x0 Type: WO

Name Bit Function Reset

31-16

write_data 15-0 This register, when written will initiate a write cycle to the NAND Flash. It is

intended as an alternative to a datapath driven by the FIFO. This register is

probably only pertinent to debug or NAND maintenance operations. The

MSB is only applicable if 16 bit NAND Flash is enabled.

0x0

Table 63. NAND Status

NAND Status

Address: 0x2C Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-19 Reserved

Write_pending 18 When ’1’, this bit indicates that a single write cycle is still in progress and

is not yet completed. If back to back writes need to be issued this bit should

be polled and the second write not written until the bit indicates a

completion.

0x0

address_pending 17 When ’1’, this bit indicates that an address cycle is still in progress and is

not yet completed. If back to back addresses need to be issued this bit

should be polled and the second address not written until the bit indicates

a completion.

0x0

Table 61. NAND Read

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 105

5.7.14 NAND Simple ECC result

These registers contain the result fields from the NAND ECC checking. These fields are only applicable when ECC

is enabled and a block read has taken place. There is a valid result field for every 256 byte block written to the NAND

page.

5.7.15 NAND Generated Simple ECC

These registers contain the generated ECC resulting from a block write or a block read. The registers contain

generated ECC whether or not ECC has been enabled. The intent of these registers are to provide flexibility to

software. If ECC is enabled, the contents of these registers are automatically written to flash (for a block write)

immediately following the block of data. If the application requires the ECC to be in a location other than the first set

of bytes in the redundant block, ECC should be disabled so that hardware does not automatically write the ECC.

command_pending 16 When ’1’, this bit indicates that a command is still in progress and is not

yet completed. If back to back commands need to be issued this bit should

be polled and the second command not written until the bit indicates a

completion.

0x0

ecc_error 15-8 Indicates that there is an un-correctable error and the data is incorrect.

There is one bit per 256 byte block read from memory. This is only

pertinent to the “simple” ECC method.

0x0

data_error 7-0 Indicates that there is a correctable data error. The ecc_result field

registers provide enough information to correct the error. There is one bit

per 256 byte block read from memory. This is only pertinent to the “simple”

ECC method.

0x0

Table 64. NAND Simple ECC result

NAND Simple ECC result

Address: 0x30-3C Reset = 0x0 Type: RO

Name Bit Function Reset

31-27

ecc_result2

ecc_result4

ecc_result6

ecc_result8

26-16 ecc result field for additional 256 byte blocks 0x0

15-11

ecc_result1

ecc_result3

ecc_result5

ecc_result7

10-0 The result field is pertinent when a correctable error has been detected. The

NAND status register indicates whether an error has occurred and whether

the error is correctable. When the error is correctable (a single bit error in the

256 byte block) the result provides enough information so that it can be

corrected. eccx_result[7:0] contains the byte address (within the 256 byte

block) that has the bit error. eccx_result[10:8] indicates which bit within the

byte is incorrect. To fix the error, software must invert the bit indicated by this

result field.

0x0

Table 63. NAND Status

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor106

Software can then read the generated ECC from these registers and write it to a different location in the redundant

block. For a block read, the generated ECC and the stored ECC can be applied to the same validation algorithm that

the hardware employs to determine how to correct bit errors.

5.7.16 FIFO Status

5.7.17 FIFO Flag Configuration

Table 65. NAND Generated Simple ECC

NAND Generated Simple ECC

Address: 0x40-5C Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-24 Reserved

ecc_generated1

ecc_generated2

ecc_generated3

ecc_generated4

ecc_generated5

ecc_generated6

ecc_generated7

ecc_generated8

23-0 The result field contains the generated ECC for the appropriate 256 byte

block. This is only pertinent to the “simple” ECC method.

0x0

Table 66. FIFO Status

FIFO status

Address: 0x60 Reset = 0x80 Type: RO/WO

Name Bit Function Reset

rx_flush 31 When this bit is written ‘1’, the receive FIFO is flushed.

This bit is a write only bit.

0x0

tx_flush 30 When this bit is written ‘1’, the transmit FIFO is flushed.

This bit is a write only bit.

0x0

Reserved 29-14 Reserved

rx_byte_count 15-8 Indicates how many bytes of data is present in the receive FIFO. This is a read

only field.

0x0

tx_byte_count 7-0 Indicates how many bytes of free space is available in the transmit FIFO. This

is a read only field.

0x80

Table 67. FIFO Flag Configuration

FIFO flag Configuration

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 107

Address: 0x64 Reset = 0x28_4040 Type: RW

Name Bit Function Reset

Reserved 31-22 Reserved

rx_FIFO_size 21:20 Although the asynchronous FIFO supports reads of varying sizes (8,16,32 or

64) the size must be configured prior to using the FIFO. This size refers to the

side of the FIFO that the internal bus or dma engine reads from. If this field

is being updated, the FIFO must be flushed to ensure that the internal

pointers are properly aligned.

00 = 8 bit

01 = 16 bit

10 = 32 bit

11 = 64 bit

0x10

tx_FIFO_size 19-18 Although the asynchronous FIFO supports writes of varying sizes (8,16,32 or

64) the size must be configured prior to using the FIFO. This size refers to the

side of the FIFO that the internal bus or dma engine writes to. If this field is

being updated, the FIFO must be flushed to ensure that the internal pointers

are properly aligned.

00 = 8 bit

01 = 16 bit

10 = 32 bit

11 = 64 bit

0x10

Reserved 17-16 Reserved

rx_half_empty 15-8 Sets the FIFO level (in bytes) that asserts the receive “half” empty flag. The

level setting is associated with how much data is in the FIFO. i.e. if the setting

is 0x20, then when the FIFO fills above 0x20 bytes of data available in the

FIFO, the interrupt will be asserted.

0x40

tx_half_full 7-0 Sets the FIFO level (in bytes) that asserts the transmit “half” full flag. The

level setting is associated with how much space is available in the FIFO. i.e.

if the setting is 0x20, then when the FIFO drains such that the amount of

space available becomes 0x20 bytes, the interrupt will be asserted.

0x40

Table 67. FIFO Flag Configuration

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor108

5.7.18 RS ECC config

5.7.19 RS ECC read parity

These registers are programmed with the 9 bytes of ECC for the next 512 byte block read. They must be

programmed prior to initiating the block read.

Table 68. RS ECC config

RS ECC config

Address: 0x68 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-3 Reserved

rs_ecc_writepar_go 2 Some applications require the write parity before the write block is sent to

the nand flash. This “kicking” signal allows the write block to pass through

the RS ECC block to generate the write ECC bytes without sending the 512

byte block to nand flash. This bit is self clearing, and when it is written the

hardware will read 512 bytes from the transmit FIFO and pass it through the

RS ECC block, After this process is complete, the 9 bytes of write ECC can

be then be read from the “RS ECC write parity” registers and written to

nand flash before the actual 512 byte block is written. After the parity is

written, a block write can be configured and the 512 bytes of data can be

written to the transmit FIFO again. This time the block will be written to the

nand flash.

0x0

rs_ecc_correct_go 1 This is a self clearing bit that is used if the RS ECC engine indicates that

correctable read errors have been detected. When this bit is written, the

input FIFO is loaded up with the corrected data of the 512 byte block.

0x0

rs_ecc_enable 0 This bit is set before any data operation occurs, if RS ECC operation is

required.

0 = RS ECC operation disabled.

1 = RS ECC checking and generation is enabled.

0x0

RS ECC read parity1

Address: 0x6C Reset = 0x0 Type: RW

Name Bit Function Reset

Read_parity 31-0 Bits 31:0 of the read parity 0x0

RS ECC read parity2

Address: 0x70 Reset = 0x0 Type: RW

Name Bit Function Reset

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 109

5.7.20 RS ECC write parity

These registers contain the 9 bytes of generated parity that are generated by the RS ECC engine after a 512 bytes

block is written to NAND flash. The 9 bytes can be read and then written to nand flash.

Read_parity 31-0 Bits [63:32] of the read parity 0x0

Table 69. RS ECC read parity

RS ECC read parity3

Address: 0x74 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-8 Reserved

Read_parity 7-0 Bits [71:64] of the read parity 0x0

RS ECC write parity1

Address: 0x78 Reset = 0x0 Type: RO

Name Bit Function Reset

Write_parity 31-0 Bits 31:0 of the write parity 0x0

RS ECC write parity2

Address: 0x7C Reset = 0x0 Type: RO

Name Bit Function Reset

Write_parity 31-0 Bits [63:32] of the write parity 0x0

Table 70. RS ECC write parity

RS ECC write parity3

Address: 0x80 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-8 Reserved

Write_parity 7-0 Bits [71:64] of the write parity 0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor110

5.7.21 RS ECC Status

5.7.22 Transmit FIFO

The Transmit FIFO operates as a FIFO even though it has a range of addresses. The wider range allows bus bursting

to fill the FIFO.

5.7.23 Receive FIFO

The Receive FIFO operates as a FIFO even though it has a range of addresses. The wider range allows bus bursting

to drain the FIFO.

Table 71. RS ECC Status

RS ECC Status

Address: 0x84 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-2 Reserved

rs_ecc_read_status 1-0 After the 512 byte read operation is completed and the

“read_ecc_complete” interrupt is asserted, this field indicates the status of

the block read.

00 = no errors

01 = correctable errors

1x = uncorrectable errors

0x0

Table 72. Transmit FIFO

Transmit FIFO

Address: 0x1000-0x1fff Reset = 0x0 Type: WO

Name Bit Function Reset

data 31-0 This field contains the data to be written to the FIFO. This register supports

8,16 or 32 bit writes and pushes the appropriate amount of data into the

FIFO.

0x0

Table 73. Receive FIFO

Receive FIFO

Address: 0x2000-0x2fff Reset = 0x0 Type: WO

Name Bit Function Reset

data 31-0 This field contains the data to be read from the FIFO. This register supports

8,16 or 32 bit reads and pops the appropriate amount of data from the FIFO.

0x0

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 111

5.8 UART Control Registers

5.8.1 UART Register Description

The register map is summarized below and described in the following sections.

5.8.2 Interrupt Source Register

Table 74. UART Register Map

Interrupt Source 0x00 RO

Interrupt Mask 0x04 RW

Interrupt Clear 0x08 WO

baud rate control 0x0C RW

Configuration 0x10 RW

fifo status 0x14 RO/WO

fifo flag Configuration 0x18 RW

reserved 0x1C-0xfff WO

transmit fifo 0x1000-0x1fff WO

receive fifo 0x2000-0x2fff RO

Table 75. Interrupt Source Register

Interrupt Source Register

Address: 0x00 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-13 Reserved

RTS_raw 12 This bit reflects the state of the RTS modem signal. 0x0

CTS_raw 11 This bit reflects the state of the CTS modem signal. 0x0

rx_push_error 10 asserted when the receive fifo experiences an overrun condition or

mis-aligned access.This error is from the perspective of the external

interface.

0x0

parity_error 9 asserted when the receive block detects a parity error 0x0

frame_error 8 asserted when the receive block has detected a frame error (missing stop

bit(s))

0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor112

The interrupt source register contains the raw unmasked interrupts and can be used for polling purposes (instead

of the external interrupt pin) or for determining which interrupt(s) have caused the external interrupt pin to assert.

5.8.3 Interrupt Mask Register

The interrupt mask register provides a mechanism to individually mask one or more of the interrupt sources.

bus_pop_error 7 asserted when the transmit fifo experiences an underrun condition or

mis-aligned access.This error is from the perspective of the internal APB

bus.

0x0

bus_push_error 6 asserted when the receive fifo experiences an overrun condition or

mis-aligned access. A mis-aligned access can occur if the width of the write

has changed from a previous access. For example, if byte writes have

previously been used, the number of writes may be non-multiples of 32 bits.

If a 32 bit write now occurs, this is a misaligned access because the byte

pointers in the fifo are not pointing to byte ’0’. This error is from the

perspective of the internal APB bus.

0x0

rx_ff 5 asserted when the receive fifo has become full 0x0

rx_hf 4 asserted when the receive fifo level (amount of bytes in the fifo) has risen

above the software configured “half” empty level.

0x0

rx_fe 3 asserted when the receive fifo has become NOT empty 0x0

tx_ff 2 asserted when the transmit fifo has become NOT full 0x0

tx_hf 1 asserted when the transmit fifo level (amount of space available) has risen

above the software configured “half” full level.

0x0

tx_fe 0 asserted when the transmit fifo has become empty 0x0

Table 76. Interrupt Mask Register

Interrupt Mask Register

Address: 0x04 Reset = 0x1FFF Type: RW

Name Bit Function Reset

Reserved 31-13 Reserved

RTS_raw 12 Masks the interrupt. 1=mask, 0=unmask. 0x1

CTS_raw 11 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_push_error 10 Masks the interrupt. 1=mask, 0=unmask. 0x1

parity_error 9 Masks the interrupt. 1=mask, 0=unmask. 0x1

frame_error 8 Masks the interrupt. 1=mask, 0=unmask. 0x1

bus_pop_error 7 Masks the interrupt. 1=mask, 0=unmask. 0x1

bus_push_error 6 Masks the interrupt. 1=mask, 0=unmask. 0x1

Table 75. Interrupt Source Register

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 113

5.8.4 Interrupt clear Register

The interrupt clear register provides the mechanism for clearing the raw interrupt sources. Writing a „1. to the

interrupt bit location will clear the interrupt.

rx_ff 5 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_hf 4 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_fe 3 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_ff 2 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_hf 1 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_fe 0 Masks the interrupt. 1=mask, 0=unmask. 0x1

Table 77. Interrupt Clear Register

• Interrupt Clear Register • •

• Address: 0x08 • Reset = 0x0 • Type: WO

•Name •Bit •Function •Reset

Reserved 31-13 Reserved

RTS_raw 12 This interrupt can’t be cleared. It just reflects the state of the modem signal. 0x0

CTS_raw 11 This interrupt can’t be cleared. It just reflects the state of the modem signal. 0x0

rx_push_error 10 Clears the interrupt when written ‘1’. 0x0

parity_error 9 Clears the interrupt when written ‘1’. 0x0

frame_error 8 Clears the interrupt when written ‘1’. 0x0

bus_pop_error 7 Clears the interrupt when written ‘1’. 0x0

bus_push_error 6 Clears the interrupt when written ‘1’. 0x0

rx_ff 5 Clears the interrupt when written ‘1’. 0x0

rx_hf 4 Clears the interrupt when written ‘1’. 0x0

rx_fe 3 Clears the interrupt when written ‘1’. 0x0

tx_ff 2 Clears the interrupt when written ‘1’. 0x0

tx_hf 1 Clears the interrupt when written ‘1’. 0x0

tx_fe 0 Clears the interrupt when written ‘1’. 0x0

Table 76. Interrupt Mask Register

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor114

5.8.5 Baud Rate Control

5.8.6 Configuration

Table 78. Baud Rate Control

Baud Rate Control

Address: 0x0C Reset = 0x0 Type: RW

Name Bit Function Reset

rx_baud_rate_div 31-16 The interface reference clock is divided by this value to produce the baud rate

for the receive data. Minimum value is d16.

0x0

tx_baud_rate_div 15-0 The interface reference clock is divided by this value to produce the baud rate

for the transmit data. Minimum value is d16. For IR mode, the

tx_baud_rate_div must be the same as the rx_baud_rate_div.

0x0

Table 79. UART Configuration

Configuration

Address: 0x10 Reset = 0x14_0000 Type: RW

Name Bit Function Reset

rts_fifo_level 31-24 This field sets the FIFO threshold as to when to de-assert the RTS modem

signal. It represents the amount of empty space in the fifo in bytes. If the fifo

goes below this amount of empty space, the RTS modem signal is

de-asserted.

0x0

Reserved 23 Reserved

enable_CTS 22 This field enables the use of the CTS signal. When enabled, the transmitter

will only send characters when this signal is asserted.

0 = modem signal not enable

1 = modem signal enabled

0x0

enable_RTS 21 This field enables the use of the RTS signal. When enabled, the receiver will

assert/de-assert the signal depending on how much space is available in the

fifo. If the modem signal is not enabled it will remain de-asserted.

0 = modem signal not enable

1 = modem signal enabled

0x0

rx_fifo_size 20-19 The receive fifo is an async fifo that supports 8,16,32 or 64 bit wide reads.

The fifo access size must be set prior to using the fifo. If the fifo size is

changed, the fifo must be flushed.

00 = 8 bits

01 = 16 bits

10 = 32 bits

11 = 64 bits

0x10

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 115

tx_fifo_size 18-17 The transmit fifo is an async fifo that supports 8,16,32 or 64 bit wide writes.

The fifo access size must be set prior to using the fifo. If the fifo size is

changed, the fifo must be flushed.

00 = 8 bits

01 = 16 bits

10 = 32 bits

11 = 64 bits

0x10

external_pad_ena 16 This bit enables the external transmit data pad. It must be enabled before

sending any data.

0 = pad disabled

1 = pad enabled

0x0

rx_sampling_pos 15-12 The rx_sampling_pos is internal sampling position in a bit and is usually set

to 7 when normal mode and 0 when IR mode.

0x0

ir_tx_polarity 10 IR TX polarity in IR mode

0 : Active High

1 : Active Low

0x0

ir_rx_polarity 9 IR RX polarity in IR mode

0 : Active High

1 : Active Low

0x0

ir_mode 8 When the ir_mode is enabled, signal format is followed by IR mode timing

diagram.

0 = normal mode

1 = IR mode

IR mode TX timing diagram

IR mode RX timing diagram

0x0

Table 79. UART Configuration

Dn-1 Dn Dn+1

15012345678910111213141501

RXGRIP_CNT = 7

0110001000/111

IR Tx

Parity

(Option)

D0 D1 D2 D3 D4 D5 D6 D7 Stop Stop2

(Option)

Start

Bit

Time Pulse width = 3/16 Bit Time

0110001000/111

IR Rx

Parity

(Option)

D0 D1 D2 D3 D4 D5 D6 D7 Stop Stop2

(Option)

Start

IR_RxINV = 1

IR_RxINV = 0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor116

5.8.7 FIFO Status

echo 7 When the echo is enabled, the incoming receive data is received internally

but it is also looped back to the external transmit path.

0 = loopback disabled

1 = loopback enabled

0x0

remote_loop 6 When a remote loopback is enabled, the incoming receive data is loopback

to the outgoing transmit data. The internal receive path is disabled.

0 = loopback disabled

1 = loopback enabled

0x0

local_loop 5 When a local loopback is enabled, the transmit data is looped back to the

receive data. The transmit data is still transmitted externally.

0 = loopback disabled

1 = loopback enabled

0x0

rx_endian 4 This bit is used to modify the endianess of the data while it passes through

the receive fifo. Data is written to the fifo a byte at a time. If data is read from

the fifo 32 bits at a time, then an endianess swap can occur. LE data can be

changed to BE data on 32 bit boundaries.

0 = maintain endianess

1 = change LE data to BE data

0x0

tx_endian 3 This bit is used to modify the endianess of the data while it passes through

the transmit fifo. Data is read from the fifo a byte at a time. If data is written

to the fifo 32 bits at a time, then an endianess swap can occur. LE data can

be changed to BE data on 32 bit boundaries.

0 = maintain endianess

1 = change LE data to BE data

0x0

parity 2:1 This field indicates the parity type.

00 = even parity

01 = odd parity

10 = no parity

11 = reserved

0x0

stop_bits 0 This field indicates the number of stop bits.

0 = 1 stop bit

1 = 2 stop bits

0x0

Table 80. FIFO Status

FIFO status

Address: 0x14 Reset = 0x40 Type: RO/WO

Name Bit Function Reset

rx_flush 31 When this bit is written ‘1’, the receive fifo is flushed. This bit is a write only bit. 0x0

tx_flush 30 When this bit is written ‘1’, the transmit fifo is flushed. This bit is a write only

bit.

0x0

Table 79. UART Configuration

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 117

5.8.8 FIFO flag configuration

5.8.9 Transmit FIFO

The Transmit FIFO operates as a fifo even though it has a range of addresses. The wider range allows bus bursting

to fill the fifo.

Reserved 29-16 Reserved

rx_byte_count 15-8 Indicates how many bytes of data is present in the receive fifo. This is a read

only field.

0x0

tx_byte_count 7-0 Indicates how many bytes of free space is available in the transmit fifo. This

is a read only field.

0x40

Table 81. FIFO Flag Configuration

FIFO flag Configuration

Address: 0x18 Reset = 0x4040 Type: RW

Name Bit Function Reset

Reserved 31-16 Reserved

rx_half_empty 15-8 Sets the FIFO level (in bytes) that asserts the receive “half” empty flag. The

level setting is associated with how much data is in the FIFO. i.e if the setting

is 0x20, then when there is 0x20 bytes (or more) of data available in the FIFO,

the interrupt will be asserted.

0x40

tx_half_full 7-0 Sets the FIFO level (in bytes) that asserts the transmit “half” full flag. The

level setting is associated with how much space is available in the FIFO. i.e

if the setting is 0x20, then when there is 0x20 bytes (or more) of space

available in the FIFO, the interrupt will be asserted.

0x40

Table 82. Transmit FIFO

Transmit FIFO

Address: 0x1000-0x1fff Reset = 0x0 Type: WO

Name Bit Function Reset

data 31-0 This field contains the data to be written to the fifo. This register supports 8,16

or 32 bit writes and pushes the appropriate amount of data into the fifo.

0x0

Table 80. FIFO Status

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor118

5.8.10 Receive FIFO

The Receive FIFO operates as a fifo even though it has a range of addresses. The wider range allows bus bursting

to drain the fifo.

5.9 SPI Registers

The register map is summarized below and described in the following sections.

5.9.1 Interrupt Source Register

The interrupt source register contains the raw unmasked interrupts and can be used for polling purposes (instead

of the external interrupt pin) or for determining which interrupt(s) have caused the external interrupt pin to assert.

Table 83. Receive FIFO

Receive FIFO

Address: 0x2000-0x2fff Reset = 0x0 Type: WO

Name Bit Function Reset

data 31-0 This field contains the data to be read from the fifo. This register

supports 8,16 or 32 bit reads and pops the appropriate amount of data

from the fifo.

0x0

Interrupt Source 0x00 RO

Interrupt Mask 0x04 RW

Interrupt Clear 0x08 WO

clock rate control 0x0C RW

Configuration1 0x10 RW

Configuration2 0x14 RW

read_status 0x18 RO

fifo status 0x1C RO/WO

fifo flag Configuration 0x20 RW

GPS Configuration 0x24 RW

GPS Counter 1 0x28 RW

GPS Counter 2 0x2C RO

reserved 0x30-0xfff WO

transmit fifo 0x1000-0x1fff WO

receive fifo 0x2000-0x2fff RO

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 119

5.9.2 Interrupt Mask Register

The interrupt mask register provides a mechanism to individually mask one or more of the interrupt sources.

Interrupt Source Register

Address: 0x00 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-11 Reserved

rxdata_fall 10 This interrupt source is specific to a SPI application involving MMC cards.

When reading or writing blocks of data from an MMC card, there is a period

of time after the command has been issued before the card is ready to

issue or accept data. During this period the MMC card must be polled to

determine when it is ready for the block transaction. It will issue “FF” until

its ready and then it issues “FE”. This interrupt eases the software

overhead when looking for the “FE”. Software can let the FIFO fill and

instead of reading all the data out looking for the “FE” it can continue to

flush the fifo until this interrupt occurs.

0x0

tx_pop_error 9 asserted when the receive fifo experiences an overrun condition or

mis-aligned access.This error is from the perspective of the external

interface.

0x0

rx_push_error 8 asserted when the transmit fifo experiences an underrun condition or

mis-aligned access.This error is from the perspective of the external

interface.

0x0

dma_pop_error 7 asserted when the transmit fifo experiences an underrun condition or

mis-aligned access.This error is from the perspective of the internal APB

bus.

0x0

dma_push_error 6 asserted when the receive fifo experiences an overrun condition or

mis-aligned access. A mis-aligned access can occur if the width of the write

has changed from a previous access. For example, if byte writes have

previously been used, the number of writes may be non-multiples of 32 bits.

If a 32 bit write now occurs, this is a misaligned access because the byte

pointers in the fifo are not pointing to byte ’0’. This error is from the

perspective of the internal APB bus.

0x0

rx_ff 5 asserted when the receive fifo has become full 0x0

rx_hf 4 asserted when the receive fifo level is above the software configured “half”

empty level.

0x0

rx_fe 3 asserted when the receive fifo has become NOT empty 0x0

tx_ff 2 asserted when the transmit fifo has become NOT full 0x0

tx_hf 1 asserted when the transmit fifo level is below the software configured “half”

full level.

0x0

tx_fe 0 asserted when the transmit fifo has become empty 0x0

Interrupt Mask Register

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor120

5.9.3 Interrupt Clear Register

The interrupt clear register provides the mechanism for clearing the raw interrupt sources. Writing a „1. to the

interrupt bit location will clear the interrupt.

Address: 0x04 Reset = 0x7FF Type: RW

Name Bit Function Reset

Reserved 31-11 Reserved

rxdata_fall 10 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_pop_error 9 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_push_error 8 Masks the interrupt. 1=mask, 0=unmask. 0x1

dma_pop_error 7 Masks the interrupt. 1=mask, 0=unmask. 0x1

dma_push_error 6 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_ff 5 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_hf 4 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_fe 3 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_ff 2 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_hf 1 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_fe 0 Masks the interrupt. 1=mask, 0=unmask. 0x1

Interrupt Clear Register

Address: 0x08 Reset = 0x0 Type: WO

Name Bit Function Reset

Reserved 31-11 Reserved

rxdata_fall 10 Clears the interrupt when written ‘1’. 0x0

tx_pop_error 9 Clears the interrupt when written ‘1’. 0x0

rx_push_error 8 Clears the interrupt when written ‘1’. 0x0

dma_pop_error 7 Clears the interrupt when written ‘1’. 0x0

dma_push_error 6 Clears the interrupt when written ‘1’. 0x0

rx_ff 5 Clears the interrupt when written ‘1’. 0x0

rx_hf 4 Clears the interrupt when written ‘1’. 0x0

rx_fe 3 Clears the interrupt when written ‘1’. 0x0

tx_ff 2 Clears the interrupt when written ‘1’. 0x0

tx_hf 1 Clears the interrupt when written ‘1’. 0x0

Registers

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Freescale Semiconductor 121

5.9.4 Clock Rate Control

5.9.5 Configuration1

tx_fe 0 Clears the interrupt when written ‘1’. 0x0

Clock Rate Control

Address: 0x0C Reset = 0x2 Type: RW

Name Bit Function Reset

clock_div 31-0 The interface PLL clock is divided by this value to produce the clock rate for

the external SPI clock. This register is only applicable for master mode of

operation. Values of “0” or “1” are invalid.

0x2

Configuration1

Address: 0x10 Reset = 0x108100 Type: RW

Name Bit Function Reset

Reserved 31 Reserved

device_select 30-29 When the SPI interface is configured as a master it can support up to four

slave devices. Only one slave device at a time can be accessed, but muxing

control allows communication with four different devices (there are 4 chip

selects and 4 receive data, the clock and transmit data is common for all 4

devices). This field controls the muxing logic.

0 = device 0

1 = device 1

2 = device 2

3 = device 3

0x0

spi_clkgen_disable 28 This field disables the SPI clock generator. Slave applications do not require

the clock generator so it is recommended that this be disabled to minimize

power.

0 = SPI clock generator enabled

1 = SPI clock generator disabled

0x0

transaction_cnt 27-20 This field dictates the number of transactions that occur during a chip select

assertion for fixed length transactions. The transactions are of a length

defined by the "length" field. This field is intended to allow for continuous

streams of data. Operation does not begin until the data is in the fifo. Care

should be taken in how the fifo is filled. The fifo should be filled with

increments (8,16 or 32) that is equal or greater than the “length” field for the

SPI transaction.

This field is only applicable to master mode of operation. Continuos mode is

also supported in slave mode but the chip select duration is controlled

externally.

0x1

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor122

var_length_start 19 This field is used in conjunction with the var_length_ena field. When “1”, the

SPI serial stream will begin once data is in the fifo. The fifo should be filled

with increments (8,16 or 32) that is equal or greater than the “length” field for

the SPI transaction. The stream will continue as long as data is in the fifo and

as long as this bit is asserted.

Writing a “0” to this field will de-activate the chip select and stop the serial

stream. The fifo should be empty when this mode is stopped.

0x0

var_length_ena 18 When “1”, the variable length continuos stream mode is enabled. This is very

similar to the mode enabled by the transaction_cnt field except the start and

end are controlled by the toggling the var_length_start field.

0x0

length 17-12 This field dictates the number of bits that are transmitted per transaction on

the SPI interface. Valid values range from d3-d32.

If the length is not 8,16 or 32 the following characteristics apply.

When the de-serialized data is pushed into the fifo it is padded with “0” to

align with 8,16 or 32 bits.

When data is being serialized and transmitted, data is popped out of the fifo

as an 8,16 or 32 bit word and the extra bits up to the 8,16 or 32 bit boundary

are dropped.

0x8

Reserved 11-9 Reserved

tx_dis 8 transmit datapath disable. Since the SPI interface transmits data coincidently

with the reception of data, this bit provides some flexibility to software. If the

application is only reading and transmit data is non-exisitant, the receive path

can be disabled. This will prevent the transmit fifo from underrunning.

0=transmit datapath enable

1=transmit datapath disable.

0x1

rx_endian 7 This bit is used to modify the endianess of the data while it passes through

the receive fifo. Data is written to the fifo a byte at a time. If data is read from

the fifo 32 bits at a time, then an endianess swap can occur. LE data can be

changed to BE data on 32 bit boundaries.

0 = maintain endianess

1 = change LE data to BE data

0x0

tx_endian 6 This bit is used to modify the endianess of the data while it passes through

the transmit fifo. Data is read from the fifo a byte at a time. If data is written

to the fifo 32 bits at a time, then an endianess swap can occur. LE data can

be changed to BE data on 32 bit boundaries.

0 = maintain endianess

1 = change LE data to BE data

0x0

LSB_first 5 Depending on the setting, the LSB or MSB of the transaction will be

transmitted or received first.

0=MSB first

1=LSB first

0x0

loopback 4 When loopback is enabled, the transmit data is looped back into the receive

data path.

0=no loopback

1=loopback

0x0

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 123

5.9.6 Configuration2

This register is used to enable a burst of "reads" on the SPI interface. It is only applicable to the master mode of

operation.

5.9.7 Read Status

rx_dis 3 Receive datapath disable. Since the SPI interface receives data coincidently

with the transmission of data, this bit provides some flexibility to software. If

the application is only writing and receive data is non-exisitant, the receive

path can be disabled. This will prevent the receive fifo from filling up with

garbage. Alternatively, the receive path can remain enabled and the receive

fifo can be flushed.

0=receive datapath enable

1=receive datapath disable

0x0

ms 2 master/slave select. This bit configures the interface as a slave or a master.

0=slave mode

1=master mode

0x0

spo 1 This field sets the inactive clock polarity. Inactivity is associated with the chip

select being de-asserted.

0 = clock low during inactivity

1 = clock high during inactivity

0x0

sph 0 This field sets the SPI clock phase.

0 = transmit on falling edge, receive on rising edge

1 = transmit on rising edge, receive on falling edge

0x0

Configuration2

Address: 0x14 Reset = 0x0 Type: RW

Name Bit Function Reset

ena 31 This bit acts as a kickoff. When written ’1’ the SPI will perform the number of

transactions specified in the read_length field and write the received data to

the receive fifo. This bit is self clearing.

0x0

Reserved 30-16 Reserved

read_length 15-0 These bits dictate the number of transactions that will occur. The transaction

width is dictated by the length field in Configuration1.

0x0

Read Status

Address: 0x18 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-16 Reserved

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor124

5.9.8 FIFO Status

5.9.9 FIFO Flag Configuration

read_length 15-0 This field is pertinent only if burst read transactions have been configured

and enabled via the Configuration2 register.

When this field is read, it will reflect the current decremented value of the

read transaction counter.

0x0

FIFO status

Address: 0x1C Reset = 0x80 Type: RO/WO

Name Bit Function Reset

rx_flush 31 When this bit is written ‘1’, the receive fifo is flushed.

This bit is a write only bit.

0x0

tx_flush 30 When this bit is written ‘1’, the transmit fifo is flushed.

This bit is a write only bit.

0x0

Reserved 29-16 Reserved

rx_byte_count 15-8 Indicates how many bytes of data is present in the receive fifo.

This is a read only field.

0x0

tx_byte_count 7-0 Indicates how many bytes of free space is available in the transmit fifo.

This is a read only field.

0x80

FIFO flag Configuration

Address: 0x20 Reset = 0x28_4040 Type: RW

Name Bit Function Reset

Reserved 31-22 Reserved

rx_fifo_size 21-20 The receive fifo is an async fifo that supports 8,16,32 or 64 bit wide reads.

The fifo access size must be set prior to using the fifo. If the fifo size is

changed, the fifo must be flushed.

00 = 8 bits

01 = 16 bits

10 = 32 bits

11 = 64 bits

0x10

tx_fifo_size 19-18 The transmit fifo is an async fifo that supports 8,16,32 or 64 bit wide writes.

The fifo access size must be set prior to using the fifo. If the fifo size is

changed, the fifo must be flushed.

00 = 8 bits

01 = 16 bits

10 = 32 bits

11 = 64 bits

0x10

Reserved 17-16 Reserved

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 125

5.9.10 GPS Configuration and Control

The SPI block has an embedded alternate GPS function that stores data from a GPS source into the receive fifo.

When this mode is enabled the SPI function can no longer use the receive fifo (the transmit fifo is still available for

SPI transmit functions). The GPS interface is a very simple serial interface as shown below:

Error! Objects cannot be created from editing field codes.

The Data format stored in the FIFO is software configurable and can be one of the following:

Error! Objects cannot be created from editing field codes.

rx_half_empty 15-8 Sets the FIFO level (in bytes) that asserts the receive “half” empty flag. The

level setting is associated with how much data is in the FIFO. i.e if the setting

is 0x20, then when there is 0x20 bytes of data available in the FIFO, the

interrupt will be asserted.

0x40

tx_half_full 7-0 Sets the FIFO level (in bytes) that asserts the transmit “half” full flag. The

level setting is associated with how much space is available in the FIFO. i.e

if the setting is 0x20, then when there is 0x20 bytes of space available in the

FIFO, the interrupt will be asserted.

0x40

GPS Configuration

Address: 0x24 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-6 Reserved

enter_track_mode 5 During tracking mode, continuous data acquisition is not required. Instead,

just the number of samples needs to be stored.

0 – normal acquisition mode (all data is sent to the fifo)

1 – tracking mode (data is no longer stored but a sample counter is

incremented).

0x0

invert_clk 4 This field will invert the clock before it is used by the internal hardware.

0 – no inversion

1 – gps_clk is inverted

0x0

mode 3 Indicates how many magnitude bits are associated with the interface.

0 – 1 magnitude bit

1 – 3 magnitude bits

0x0

format 2-1 Sets the serialization format as illustrated above.

00 – unpacked

01 – packed

10 – super packed

11 - reserved

0x0

enable_gps 0 As soon as this mode is enabled, any activity on the GPS interface is

de-serialized and pushed into the receive fifo.

0 – disabled

1 - enabled

0x0

GPS Counter 1

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor126

The following sequence is a typical use of the GPS registers.

• Initially the acquisition mode is entered. The GPS interface is enabled and the data is moved by the mc-dma

to a storage buffer. The switch_over_cnt is programmed with a sample number that matches the chunk size

that the mc-dma is programmed with.

• After acquisition, the tracking mode is entered. During this mode, most of the data is not required but the

number of samples that have been received needs to be saved. To enter this mode, the “enter_track_mode”

field is asserted. When this is asserted, the hardware will wait until the down counter expires (so that a

known amount of data is received) and then just counts the number of samples that occur. The incoming

data is discarded.

• When additional data samples are required, the “enter_track_mode” field is de-asserted. This will re-enable

the data path to the fifo and hold the sample count until the next time the tracking mode is entered.

5.9.11 Transmit FIFO

The Transmit FIFO operates as a fifo even though it has a range of addresses. The wider range allows bus bursting

to fill the fifo.

Address: 0x28 Reset = 0x0 Type: RW

Name Bit Function Reset

switch_over_cnt 31-0 This register is used to set the start value of a count down register. The count

down register is used when switching from acquisition mode to tracking

mode. It’s count is used to synchronize when the switch over from storing

data to just counting samples (data is thrown away) occurs. Usually it will

lineup with a completed DMA transaction.

If enter_track_mode is set, and the count down register is “0” data will no

longer be stored in the fifo. Instead the sample_cnt will be incremented.

When enter_track_mode is cleared, the data is once again stored in the fifo

and the down counter starts decrementing from its programmed start value.

0x0

GPS Counter 2

Address: 0x2C Reset = 0x0 Type: RO

Name Bit Function Reset

sample_cnt 31-0 This field contains the current sample count when the GPS is in the tracking

mode of operation.

It is cleared when the following event occurs – the enter_track_mode is set

and the count down register is “0”.

When enter_track_mode becomes “0”, the sample_cnt holds its current

value.

0x0

Transmit FIFO

Address: 0x1000-0x1fff Reset = 0x0 Type: WO

Name Bit Function Reset

Registers

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Freescale Semiconductor 127

5.9.12 Receive FIFO

The Receive FIFO operates as a fifo even though it has a range of addresses. The wider range allows bus bursting

to drain the fifo.

5.10 Audio Registers

The Audio register map is summarized below and described in the following sections. All register support 32 bit

accesses only. The FIFOs are the exception and they support 8,16 or 32 bit accesses.

data 31-0 This field contains the data to be written to the fifo. This register supports 8,16

or 32 bit writes and pushes the appropriate amount of data into the fifo. The

size of the access must match the size that is programmed into the

tx_fifo_size field in the Configuration1 register.

0x0

Receive FIFO

Address: 0x2000-0x2fff Reset = 0x0 Type: WO

Name Bit Function Reset

data 31-0 This field contains the data to be read from the fifo. This register supports

8,16 or 32 bit reads and pops the appropriate amount of data from the fifo.

The size of the access must match the size that is programmed into the

rx_fifo_size field in the Configuration1 register.

0x0

Interrupt Source 0x00 RO

Interrupt Mask 0x04 RW

Interrupt Clear 0x08 WO

Interface Configuration 0x0C RW

Bit Clock Configuration 0x10 RW

Receive Frame Clock Configuration 0x14 RW

Transmit Frame Clock Configuration 0x18 RW

AC97 Configuration 0x1C RW

AC97 Command 0x20 RW

AC97 Status 0x24 RO

AC97 Modem Control 0x28 RW

AC97 Modem Status 0x2C RO

fifo status 0x30 RO/WO

fifo flag Configuration 0x34 RW

NCO Configuration 0x38 RW

reserved 0x3c-0xfff

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor128

5.10.1 Interrupt Source Register

The interrupt source register contains the raw unmasked interrupts and can be used for polling purposes (instead

of the external interrupt pin) or for determining which interrupt(s) have caused the external interrupt pin to assert.

tx fifo 0x1000-0x1fff WO

rx fifo 0x2000-0x2fff RO

Interrupt Source Register

Address: 0x00 Reset = 0x2 Type: RO

Name Bit Function Reset

Reserved 31-14 Reserved

modem_status 13 This interrupt is only applicable for the AC97 mode of operation. It is

asserted after the modem status field is valid.

0x0

cmd_read_complete 12 This interrupt is only applicable for the AC97 mode of operation. It is

asserted after a requested read command (slot 1 & 2) has completed and

valid data is now available in the AC97 status register.

0x0

cmd_write_complete 11 This interrupt is only applicable for the AC97 mode of operation. It is

asserted after a requested write command (slot 1 & 2) has completed.

0x0

codec_ready 10 This interrupt is only applicable for the AC97 mode of operation. It is

asserted when the “codec ready” bit in the incoming TAG channel has

transitioned from “0” to “1” indicating that the codec is now ready for

operation.

0x0

tx_pop_error 9 asserted when the receive fifo experiences an overrun condition or

mis-aligned access.This error is from the perspective of the external

interface.

0x0

rx_push_error 8 asserted when the transmit fifo experiences an underrun condition or

mis-aligned access.This error is from the perspective of the external

interface.

0x0

bus_pop_error 7 asserted when the receive fifo experiences an underrun condition or

mis-aligned access.This error is from the perspective of the internal APB

bus.

0x0

bus_push_error 6 asserted when the transmit fifo experiences an overrun condition or

mis-aligned access. A mis-aligned access can occur if the width of the

write has changed from a previous access. For example, if byte writes

have previously been used, the number of writes may be non-multiples of

32 bits. If a 32 bit write now occurs, this is a misaligned access because

the byte pointers in the fifo are not pointing to byte ’0’. This error is from

the perspective of the internal APB bus.

0x0

rx_ff 5 asserted when the receive fifo has become full 0x0

rx_hf 4 asserted when the receive fifo level has risen above the software

configured “half” empty level.

0x0

rx_fe 3 asserted when the receive fifo has become NOT empty 0x0

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 129

5.10.2 Interrupt Mask Register

The interrupt mask register provides a mechanism to individually mask one or more of the interrupt sources.

5.10.3 Interrupt Clear Register

The interrupt clear register provides the mechanism for clearing the raw interrupt sources. Writing a „1. to the

interrupt bit location will clear the interrupt.

tx_ff 2 asserted when the transmit fifo has become NOT full 0x0

tx_hf 1 asserted when the transmit fifo level has dropped below the software

configured “half” full level.

0x0

tx_fe 0 asserted when the transmit fifo has become empty 0x0

Interrupt Mask Register

Address: 0x04 Reset = 0xFFFF_FFFF Type: RW

Name Bit Function Reset

Reserved 31-14 Reserved

modem_status 13 Masks the interrupt. 1=mask, 0=unmask. 0x1

cmd_read_complete 12 Masks the interrupt. 1=mask, 0=unmask. 0x1

cmd_write_complete 11 Masks the interrupt. 1=mask, 0=unmask. 0x1

codec_ready 10 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_pop_error 9 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_push_error 8 Masks the interrupt. 1=mask, 0=unmask. 0x1

bus_pop_error 7 Masks the interrupt. 1=mask, 0=unmask. 0x1

bus_push_error 6 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_ff 5 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_hf 4 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_fe 3 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_ff 2 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_hf 1 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_fe 0 Masks the interrupt. 1=mask, 0=unmask. 0x1

Interrupt Clear Register

Address: 0x08 Reset = 0x0 Type: WO

Name Bit Function Reset

31-14

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor130

5.10.4 Interface Configuration

modem_status 13 Clears the interrupt when written ‘1’. 0x0

cmd_read_complete 12 Clears the interrupt when written ‘1’. 0x0

cmd_write_complete 11 Clears the interrupt when written ‘1’. 0x0

codec_ready 10 Clears the interrupt when written ‘1’. 0x0

tx_pop_error 9 Clears the interrupt when written ‘1’. 0x0

rx_push_error 8 Clears the interrupt when written ‘1’. 0x0

bus_pop_error 7 Clears the interrupt when written ‘1’. 0x0

bus_push_error 6 Clears the interrupt when written ‘1’. 0x0

rx_ff 5 Clears the interrupt when written ‘1’. 0x0

rx_hf 4 Clears the interrupt when written ‘1’. 0x0

rx_fe 3 Clears the interrupt when written ‘1’. 0x0

tx_ff 2 Clears the interrupt when written ‘1’. 0x0

tx_hf 1 Clears the interrupt when written ‘1’. 0x0

tx_fe 0 Clears the interrupt when written ‘1’. 0x0

Interface Configuration

Address: 0x0C Reset = 0x8080_0000 Type: RW

Name Bit Function Reset

tx_fifo_size 31-30 The transmit fifo is an async fifo that supports 8,16,32 or 64 bit wide writes.

The fifo access size must be set prior to using the fifo. If the fifo size is

changed, the fifo must first be flushed.

00 = 8 bits

01 = 16 bits

10 = 32 bits

11 = 64 bits

0x2

rxd_word_length 29-24 Number of bits de-serialized in each active channel on the receive interface.

Maximum value is 32 for the I2S mode of operation and 20 bits for the AC97

mode of operation. If this field has been changed after the fifos have been

used, the fifo must be flushed for proper operation.

0x0

rx_fifo_size 23-22 The receive fifo is an async fifo that supports 8,16,32 or 64 bit wide reads.

The fifo access size must be set prior to using the fifo. If the fifo size is

changed, the fifo must first be flushed.

00 = 8 bits

01 = 16 bits

10 = 32 bits

11 = 64 bits

0x2

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 131

txd_word_length 21-16 Number of bits serialized in each active channel on the transmit interface.

Maximum value is 32 for the I2S mode of operation and 20 bits for the AC97

mode of operation. If this field has been changed after the fifos have been

used, the fifo must be flushed for proper operation.

0x0

rx_stereo 15 This field enables whether or not the stereo mode is enabled for the receive

path. When the stereo mode is enabled the frame is organized as a left and

right channel where one channel is transmitted during the first half of frame

period and the second channel is transmitted during the second half of the

frame period. This setting is only applicable when the interface operates in

the I2S mode.

0 = mono operation (single channel)

1 = stereo operation (two channels)

0x0

loop_back 14 When “1” the transmit data is looped back to the receive data. 0x0

common_sync 13 The audio interface can utilize a common frame synchronization signal for

both the transmit and receive datapath or can use separate synchronization

signals. If a common synchronization signal is selected, then the bit clocks

must also be configured as common. The transmit frame signal (fsx) is used

if common_sync is enabled

1 = receive frame sync is shared with the transmit.

0 = receive frame sync is separate and unique from the transmit.

0x0

rx_bitclk_src 12 The receive interface can operate with its own bit clock or it can share the

transmit bit clock. For applications that have a single bit clock, the receive bit

clock must be shared with the transmit bit clock. When the receive and

transmit share a bit clock, that bit clock is the transmit bit clock.

0 = receive bit clock is shared with the transmit.

1 = receive bit clock is separate and unique from the transmit.

0x0

fsx_polarity 11 This bit sets the polarity of the transmit frame clock. If the external device

sources the frame sync, this bit should be set such that the asic receives an

active high frame sync.

0 = internally generated frame sync is active high or external frame sync is

NOT inverted.

1 = internally generated frame sync is active low or external frame sync is

inverted.

0x0

fsr_polarity 10 This bit sets the polarity of the receive frame clock. . If the external device

sources the frame sync, this bit should be set such that the asic receives an

active high frame sync.

0 = internally generated frame sync is active high or external frame sync is

NOT inverted.

1 = internally generated frame sync is active low or external frame sync is

inverted.

0x0

clkx_polarity 9 This bit is used to determine which edge of the bit clock is used to transition

the transmit data and frame signal.

0 = transmit signaling transitions on the rising edge of the bit clock.

1 = transmit signaling transitions on the falling edge of the bit clock.

0x0

clkr_polarity 8 This bit is used to determine which edge of the bit clock is used to transition

the frame signal and sample the receive data.

0 = receive signaling transitions/sampled on the rising edge of the bit clock.

1 = receive signaling transitions/sampled on the falling edge of the bit clock.

0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor132

The interface configuration register allows pretty much any possible configuration of external signals and sources of

these signals. The following table provides some typical example settings.

fsx_src 7 This bit reflects whether or not the asic sources the frame synchronization or

whether the codec is the source.

0 = pad is disabled and an external device sources the frame sync.

1 = pad is enabled and the asic sources the frame sync. Prior to enabling the

frame sync timing must be properly setup.

0x0

fsr_src 6 This bit reflects whether or not the asic sources the frame synchronization or

whether the codec is the source.

0 = pad is disabled and an external device sources the frame sync.

1 = pad is enabled and the asic sources the frame sync. Prior to enabling the

frame sync timing must be properly setup.

0x0

clkx_src 5 This bit reflects whether or not the asic sources the bit clock or whether the

codec is the source.

0 = pad is disabled and an external device sources the bit clock

1 = pad is enabled and the asic sources the bit clock. Prior to enabling the bit

clock timing must be properly setup.

0x0

clkr_src 4 This bit reflects whether or not the asic sources the bit clock or whether the

codec is the source.

0 = pad is disabled and an external device sources the bit clock

1 = pad is enabled and the asic sources the bit clock. Prior to enabling the bit

clock timing must be properly setup.

ena_transmit 3 This bit enables the datapath for the transmit direction. This allows the sync

and bit clocks to be setup and enabled prior to having a datapath enabled in

the transmit direction. The transmit data will be tri-stated until this bit is set

and then data will be popped from the fifo and serialized.

0 = transmit datapath is disabled

1 = transmit datapath is enabled

0x0

ena_receive 2 This bit enables the datapath for the receive direction. This allows the sync

and bit clocks to be setup and enabled prior to having a datapath enabled in

the receive direction. The receive data is ignored until this bit is set and then

data will be de-serialized and pushed into the fifo.

0 = receive datapath is disabled

1 = receive datapath is enabled

0x0

tx_stereo 1 This field enables whether or not the stereo mode is enabled for the transmit

path. When the stereo mode is enabled the frame is organized as a left and

right channel where one channel is transmitted during the first half of frame

period and the second channel is transmitted during the second half of the

frame period. This setting is only applicable when the interface operates in

the I2S mode.

0 = mono operation (single channel)

1 = stereo operation (two channels)

0x0

mode 0 This field indicates to the hardware which mode of operation the interface will

operate.

0 = I2S mode of operation

1 = AC97 mode of operation

0x0

Mode of

operation mclk fsx clkx fsr clkr

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 133

5.10.5 Bit clock Configuration

5.10.6 Receive Frame Clock Configuration

5.10.7 Transmit Frame Clock Configuration

I2S master 18.432 Mhz ASIC sourced ASIC sourced optional optional

I2S slave Not used Codec sourced Codec sourced optional optional

AC97 master 24.576 Mhz ASIC sourced ASIC sourced Not used Not used

AC97 slave Not used ASIC sourced Codec sourced Not used Not used

Bit Clock Configuration

Address: 0x10 Reset = 0x0 Type: RW

Name Bit Function Reset

rx_clk_div 31-16 This field contains the divider value applied to the master audio clock (mclk)

to produce the receive bit clock (clkr). Values of 2 or greater are valid. This

field is only applicable when the receive clock source is the asic as

configured in the interface configuration register. The resultant clock will have

a 50% duty cycle for even divides and a non-50% duty cycle for odd divides.

0x0

tx_clk_div 15-0 This field contains the divider value applied to the master audio clock (mclk)

to produce the transmit bit clock (clkx). Values of 2 or greater are valid. This

field is only applicable when the transmit clock source is the asic as

configured in the interface configuration register. The resultant clock will have

a 50% duty cycle for even divides and a non-50% duty cycle for odd divides.

0x0

Receive Frame Clock Configuration

Address: 0x14 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31 Reserved 0x0

rx_dly 30-24 This field provides the capability to delay the first bit period of valid data from

the assertion of the receive frame clock. This field contains the number of

receive bit clocks from the active edge of the frame clock to the first valid bit

of received data.

0x0

rx_frame_width 23-16 This field controls the active width of the receive frame clock. The field

represents the number of receive bit clocks and has a minimum value of 1.

0x0

rx_frame_period 15-0 This field contains the divider value applied to the receive bit clock to produce

the receive frame clock. Values of 2 or greater are valid.

0x0

Transmit Frame Clock Configuration

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor134

5.10.8 C97 Configuration

Address: 0x18 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31 Reserved 0x0

tx_dly 30-24 This field provides the capability to delay the first bit period of valid data from

the assertion of the transmit frame clock. This field contains the number of

transmit bit clocks from the active edge of the frame clock to the first valid bit

of transmitted data.

0x0

tx_frame_width 23-16 This field controls the active width of the transmit frame clock. The field

represents the number of transmit bit clocks and has a minimum value of 1.

0x0

tx_frame_period 15-0 This field contains the divider value applied to the transmit bit clock to produce

the transmit frame clock. Values of 2 or greater are valid.

0x0

AC97 Configuration

Address: 0x1C Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-16 Reserved 0x0

codec_id 15-14 This field contains the codec ID that will be transmitted during slot 0. Multiple

codecs are not supported so the ID will probably always be ‘0’ for a primary

codec. The field has been made configurable just in case the flexibility is

required.

0x0

warm_reset 13 Writing a ‘1’ to this bit will initiate a “warm” reset on the AC-link interface. This

should only be initiated if the codec is in the power-down mode. This bit will

cause the hardware to assert the sync signal for 1µsec initiating a warm reset

within the codec. The bit is self resetting after the reset activity is complete.

Prior to writing to this bit initiate a warm reset, the codec_pdown bit must be

cleared in the AC97 command register.

0 = no action

1 = hardware initiates a warm reset

0x0

tx_slot_ena 12 -3 Enables the transmit channel for slots 3 to 12. If variable sampling rates are

enabled, this bit is ignored and the slot enable information is obtained from

the received TAG slot information.

0 = disable slot

1 = enable slot

0x0

Reserved 2-1 Reserved 0x0

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 135

5.10.9 AC97 Command

This register provides the mechanism for read and writing the command registers in the codec. This operation

occurs in slot 1 and 2 during the AC97 frame. If a command write or status read are initiated, they will occur during

the next AC97 frame. Status and interrupt information is provided to indicate the completion of the command write

or the availability of the status information.

variable_rate_ena 0 An AC97 frame is based on a 48 Khz period. If the application is using a 48

Khz sampling rate, this bit should remain disabled and the enabled channels

will be transmitted/received in every frame. If the application is utilizing a

non-48 Khz period and the codec supports variable sampling rates, then this

bit should be set. When this bit is set, the hardware looks at the channel

request bits in the received TAG channel. When the channel request bits

match the enabled slots as configured in tx_slot_ena, the channels that are

requesting data are sent data. The hardware assumes that the data in the fifo

matches the channel requests (i.e. the hardware assumes that the requests

will maintain their channel order). Data is not sent until all channels are

requesting so that the channel order within the frame is maintained.

0x0

AC97 Command

Address: 0x20 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-26 Reserved 0x0

codec_pdown 25 The Codec can be placed in a power down state by writing to its power down

but the hardware needs to know that this register is being written to power

down the codec. If this is the case, all outputs are zeroed after slot 2 has been

transmitted. The codec is removed from this state by issuing a warm reset.

This bit must be cleared prior to requesting a warm reset.

0 = no action

1 = interface activity ends after valid slot 2 data has been sent.

0x0

control_reg_ena 24 To enable activity in slot 1 and 2, this bit must be set. Once the bit is set, when

the next frame occurs address and write data (if applicable) is serialized out in

the next frame. This bit is self resetting once this action occurs. The address

and write data must be valid when this bit is set.

0 = no action

1 = enable slot 1 or 2 (iff applicable) during the next frame.

0x0

write_data 23-8 This field contains the write data if the register access is a write. This field is

serialized out during slot 2 (command data port) if read_write=0.

0x0

read_write 7 This is the read/write bit that is serialized out in the read/write command bit

field of slot 1 (command address port).

0 = write

1 = read

0x0

control_reg_index 6-0 When enabled, this field will be serialized out in the address field of slot 1

(command address port). It is the address within the codec of the register

being written or read.

0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor136

5.10.10 AC97 Status

5.10.11 AC97 Modem Control

This register provides the mechanism for writing to slot 12 when the slot operates as the Modem GPIO control

channel.

5.10.12 AC97 Modem Status

AC97 Status

Address: 0x24 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-25 Reserved 0x0

codec_ready 24 This bit reflects the status of the “Codec Ready” bit in the slot 0 TAG

information for the most recently received frame. The codec is not ready for

operation until this bit gets set. The condition is normal following the

de-assertion of power on reset.

0x0

read_data_valid 23 This bit is asserted if the read_data is valid. The bit is self clearing when a

new codec register read is requested (as configured in the AC97 command

0 = read_data is invalid

1 = read_data is valid

0x0

echoed_index 22-16 This is the register index that has been echoed back by the codec and

reflects the register address that was read.

0x0

read_data 15-0 This field contains the last valid read data from a register access. Data is valid

as long as the read_data_valid flag is set.

0x0

AC97 Modem Control

Address: 0x28 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-21 Reserved 0x0

modem_ena 20 To enable activity in slot 12 (for modem control purposes), this bit must be

set. Once the bit is set, when the next frame occurs the modem_control field

is serialized out in the next frame. This bit is self resetting once this action

occurs. . The modem control data must be valid when this bit is set.

0 = no action

1 = enable slot 12 during the next frame.

0x0

modem_control 19-0 When enabled, this field will be serialized out in slot 12. 0x0

AC97 Modem Status

Address: 0x2C Reset = 0x0 Type: RO

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 137

5.10.13 FIFO Status

5.10.14 FIFO Flag Configuration

5.10.15 NCO Configuration

Name Bit Function Reset

Reserved 31-20 Reserved 0x0

modem_control 19-0 This field contains the last valid modem GPIO status from slot 12. An

interrupt is raised when the data has been updated.

0x0

FIFO status1

Address: 0x30 Reset = 0x80 Type: RO/WO

Name Bit Function Reset

rx_flush 31 When this bit is written ‘1’, the receive fifo is flushed. This bit is a write only

self clearing bit.

0x0

tx_flush 30 When this bit is written ‘1’, the transmit fifo is flushed. This bit is a write only

self clearing bit.

0x0

Reserved 29-16 Reserved 0x0

rx_byte_count 15-8 Indicates how many bytes of data is present in the receive fifo. This is a read

only field.

0x0

tx_byte_count 7-0 Indicates how many bytes of free space is available in the transmit fifo. This

is a read only field.

0x80

FIFO flag Configuration

Address: 0x34 Reset = 0x4040 Type: RW

Name Bit Function Reset

Reserved 31-16 Reserved

rx_half_empty 15-8 Sets the FIFO level (in bytes) that asserts the receive “half” empty flag. The

level setting is associated with how much data is in the FIFO. i.e if the setting

is 0x20, then when there is 0x20 bytes of data available in the FIFO, the

interrupt will be asserted.

0x40

tx_half_full 7-0 Sets the FIFO level (in bytes) that asserts the transmit “half” full flag. The

level setting is associated with how much data is in the FIFO. i.e if the setting

is 0x20, then when there is 0x20 bytes of data available in the FIFO, the

interrupt will be asserted.

0x40

NCO Configuration

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor138

5.11 MMC/SD Control Registers

The register map is summarized below and described in the following sections.

5.11.1 Interrupt Source Register

The interrupt source register contains the raw unmasked interrupts and can be used for polling purposes (instead

of the external interrupt pin) or for determining which interrupt(s) have caused the external interrupt pin to assert.

Address: 0x38 Reset = 0x0 Type: RW

Name Bit Function Reset

audio_nco_enable 31 Enables the NCO as the source of MCLK. Also enables the MCLK PAD to

drive out the NCO derived clock.

0x0

Reserved 30-20 Reserved

audio_nco_value 19-0 NCO value.

NCO value = round ((2^21 x mclk_freq) / SYS_freq)

0x0

Interrupt Source 0x00 RO

Interrupt Mask 0x04 RW

Interrupt Clear 0x08 WO

MMC/SD clock rate 0x0C RW

MMC/SD Configuration 0x10 RW

MMC/SD Data Control 0x14 RW

MMC/SD argument 0x18 RW

MMC/SD command 0x1C RW

MMC/SD command response 0x20 RO

MMC/SD response 0x24-0x30 RO

fifo status 0x34 RO/WO

fifo flag Configuration 0x38 RW

reserved 0x3C-0xfff

transmit fifo 0x1000-0x1fff WO

receive fifo 0x2000-0x2fff RO

Interrupt Source Register

Address: 0x00 Reset = 0x0 Type: RO

Name Bit Function Reset

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 139

Reserved 31-20 Reserved

dat3 19 This is not an interrupt but reflects the current state of the mmc_data3 signal. 0x0

sdio_interrupt 18 SDIO cards have a card interrupt mechanism. This bit is the indicator for that

interrupt and is only applicable to SDIO cards. This interrupt source can be

masked but not cleared by the interrupt clear register. It must be cleared

within the SDIO card itself.

0x0

data_complete 17 Indicates that an MMC/SD data operation (read or write) is complete. 0x0

data_crc 16 Indicates that for an MMC/SD data operation, the CRC check failed. 0x0

response 15 Indicates that for MMC/SD operation, an MMC/SD response is available in

the response buffer.

0x0

response_crc 14 Indicates that the received MMC/SD response has a CRC check failure. 0x0

dat3_low 13 This interrupt is asserted when the data state machine is idle and the

mmc_data3 is low.

0x0

dat3_high 12 This interrupt is asserted when the data state machine is idle and the

mmc_data3 is high.

0x0

cmd_complete 11 Indicates that the current MMC/SD command has been sent. 0x0

busy 10 Indicates that an MMC/SD card "busy" condition is no longer present. i.e. the

card is no longer busy.

0x0

tx_pop_error 9 asserted when the transmit fifo experiences an overrun condition or

misaligned access. This error is from the perspective of the external

interface.

0x0

rx_push_error 8 asserted when the receive fifo experiences an underrun condition or

misaligned access. This error is from the perspective of the external

interface.

0x0

dma_pop_error 7 asserted when the receive fifo experiences an underrun condition or

misaligned access. This error is from the perspective of the internal APB

bus.

0x0

dma_push_error 6 asserted when the transmit fifo experiences an overrun condition or

misaligned access. A misaligned access can occur if the width of the write

has changed from a previous access. For example, if byte writes have

previously been used, the number of writes may be non-multiples of 32 bits.

If a 32 bit write now occurs, this is a misaligned access because the byte

pointers in the fifo are not pointing to byte ’0’. This error is from the

perspective of the internal APB bus.

0x0

rx_ff 5 asserted when the receive fifo has become full 0x0

rx_hf 4 asserted when the receive fifo level (amount of bytes in the fifo) is above the

software configured “half” empty level.

0x0

rx_fe 3 asserted when the receive fifo has become NOT empty 0x0

tx_ff 2 asserted when the transmit fifo has become NOT full 0x0

tx_hf 1 asserted when the transmit fifo level (amount of space available) is above the

software configured “half” full level.

0x0

tx_fe 0 asserted when the transmit fifo has become empty 0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor140

5.11.2 Interrupt Mask Register

The interrupt mask register provides a mechanism to individually mask one or more of the interrupt sources.

5.11.3 Interrupt Clear Register

The interrupt clear register provides the mechanism for clearing the raw interrupt sources. Writing a „1. to the

interrupt bit location will clear the interrupt.

Interrupt Mask Register

Address: 0x04 Reset = 0x7_FFFF Type: RW

Name Bit Function Reset

31-19

sdio_interrupt 18 Masks the interrupt. 1=mask, 0=unmask. 0x1

data_complete 17 Masks the interrupt. 1=mask, 0=unmask. 0x1

data_crc 16 Masks the interrupt. 1=mask, 0=unmask. 0x1

response 15 Masks the interrupt. 1=mask, 0=unmask. 0x1

response_crc 14 Masks the interrupt. 1=mask, 0=unmask. 0x1

dat3_low 13 Masks the interrupt. 1=mask, 0=unmask. 0x1

dat3_high 12 Masks the interrupt. 1=mask, 0=unmask. 0x1

cmd_complete 11 Masks the interrupt. 1=mask, 0=unmask. 0x1

busy 10 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_pop_error 9 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_push_error 8 Masks the interrupt. 1=mask, 0=unmask. 0x1

dma_pop_error 7 Masks the interrupt. 1=mask, 0=unmask. 0x1

dma_push_error 6 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_ff 5 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_hf 4 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_fe 3 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_ff 2 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_hf 1 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_fe 0 Masks the interrupt. 1=mask, 0=unmask. 0x1

Interrupt Clear Register

Address: 0x08 Reset = 0x0 Type: WO

Name Bit Function Reset

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 141

5.11.4 MMC/SD Clock Rate

31-18

data_complete 17 Clears the interrupt when written ‘1’. 0x0

data_crc 16 Clears the interrupt when written ‘1’. 0x0

response 15 Clears the interrupt when written ‘1’. 0x0

response_crc 14 Clears the interrupt when written ‘1’. 0x0

dat3_low 13 Clears the interrupt when written ‘1’. 0x0

dat3_high 12 Clears the interrupt when written ‘1’. 0x0

cmd_complete 11 Clears the interrupt when written ‘1’. 0x0

busy 10 Clears the interrupt when written ‘1’. 0x0

tx_pop_error 9 Clears the interrupt when written ‘1’. 0x0

rx_push_error 8 Clears the interrupt when written ‘1’. 0x0

dma_pop_error 7 Clears the interrupt when written ‘1’. 0x0

dma_push_error 6 Clears the interrupt when written ‘1’. 0x0

rx_ff 5 Clears the interrupt when written ‘1’. 0x0

rx_hf 4 Clears the interrupt when written ‘1’. 0x0

rx_fe 3 Clears the interrupt when written ‘1’. 0x0

tx_ff 2 Clears the interrupt when written ‘1’. 0x0

tx_hf 1 Clears the interrupt when written ‘1’. 0x0

tx_fe 0 Clears the interrupt when written ‘1’. 0x0

MMC/SD clock rate

Address: 0x0C Reset = 0x80000000 Type: RW

Name Bit Function Reset

disable 31 This bit provides a lower power standby condition when the SD interface is in

use. Setting this bit will halt the clock such that the external serial clock is low.

Power-up default is a disabled clock. Software must ensure that the proper

divide is programmed prior to enabling the clock. Also, it is recommended to

disable the clock whenever a clock_rate_divider change is required so that

spurious clock pulses do not occur.

0x1

Reserved 30-16 Reserved

clock_divider 15-0 The interface PLL clock is divided by the contents of this field to produce the

serial clock. A divider of 2 or greater is valid.

0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor142

5.11.5 MMC/SD configuration

5.11.6 MMC/SD Data Control

This register is used to indicate to hardware the data path activity associated with a particular command. This

MMC/SD Configuration

Address: 0x10 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-10 Reserved

data_width 13:12 Configures the width of the external data bus.

00 = 1-bit data

01 = 4-bit data

10,11 = reserved

0x0

Reserved 11-10 Reserved

tx_fifo_size 9-8 Although the asynchronous fifo supports writes of varying sizes (8,16,32 or

64) the size must be configured prior to using the fifo. This size refers to the

side of the fifo that the internal bus or dma engine writes to. If this field is being

updated, the fifo must be flushed to ensure that the internal pointers are

properly aligned.

00 = 8 bit

01 = 16 bit

10 = 32 bit

11 = 64 bit

0x0

rx_fifo_size 7-6 Although the asynchronous fifo supports reads of varying sizes (8,16,32 or 64)

the size must be configured prior to using the fifo. This size refers to the side

of the fifo that the internal bus or dma engine reads from. If this field is being

updated, the fifo must be flushed to ensure that the internal pointers are

properly aligned.

00 = 8 bit

01 = 16 bit

10 = 32 bit

11 = 64 bit

0x0

enable 5 This allows the media interface to function or holds it in an in-operative state.

0=disable

1=enable.

0x0

Reserved 4 Reserved

block_size 3-0 This field indicates how many bytes are associated with a block for any read

or write transaction. The hardware uses this field to break larger data lengths

into block size chunks. The block size is defined as 2block_size.

0=reserved, 1=2bytes, 2=4bytes, 3=8bytes, 4=16bytes, 5=32bytes,

6=64bytes, 7=128bytes, 8=256bytes, 9=512bytes, 10=1Kbytes, 11=2Kbytes,

12=4Kbytes, 13=8Kbytes, 14=16Kbytes, 15=32Kbytes

0x0

MMC/SD Data Control

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 143

5.11.7 MMC/SD Argument

5.11.8 MMC/SD Argument

Address: 0x14 Reset = 0x0 Type: RW

Name Bit Function Reset

data_size 31-16 This field indicates how many bytes are transferred before signaling a

completion interrupt. This field must be an integer multiple of the configured

block size. When this register is read, the data_size field will reflect how many

bytes of data remain to be transferred.

0x0

Reserved 15-2 Reserved

data_ena 1 Data path operation will not commence until this bit is enabled.

0=disable

1=enable.

0x0

data_direction 0 0=read

1=write.

0x0

MMC/SD Argument

Address: 0x18 Reset = 0x0 Type: RW

Name Bit Function Reset

cmd_argument 31-0 This contains the argument for the command to be sent to the SD card. A read

of the register will provide the previous command argument that was written

0x0

MMC/SD Command

Address: 0x1C Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-11 Reserved

response_type 10-8 This field indicates to the hardware the type of response that is expected for

the particular command issued.

000=response type R1 or R6

001=rsponse type R1b

010=response type R2

011=response type R3 or R4

100=no response.

0x0

Reserved 7 Reserved

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor144

5.11.9 MMC/SD Command Response

5.11.10 MMC/SD Response

data_command 6 This bit is only applicable to SDIO cards that make use of the interrupt feature

on mmc_data1. Also it is only applicable when the interface is configured for

the 4 bit mode of operation which will use mmc_data1 as a data line. Under

this scenario the SDIO interrupt has a window of opportunity that it is valid. For

hardware to understand that window of opportunity it must know whether the

command that is being issued is associated with data or not.

1 = command is a data related command (read or write operation)

0 = command is not data related.

0x0

command_index 5-0 This is the command index to be sent to the SD card. The action of writing to

this register initiates the command transfer process. A read of the register will

provide the previous command index that was written.

0x0

MMC/SD command response

Address: 0x20 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-6 Reserved

command_index 5-0 Contains the command index field of the last received response. If the

response is type R2 or R3 the field will be ’111111’.

0x0

MMC/SD response

Address: 0x24 Reset = 0x0 Type: RO

Name Bit Function Reset

card_status

CID/CSD[39:8]

31-0 These registers are used to store the current SD response. If the response is

type R1, R1b or R6 only the first 32 bits of the response field are valid

Contains the card status field of the response or contains either the CID fields

or CSD fields if a command is issued that queries this information.

0x0

MMC/SD response

Address: 0x28 Reset = 0x0 Type: RO

Name Bit Function Reset

CID/CSD[71:40] 31-0 Contains either the CID fields or CSD fields if a command is issued that

queries this information.

0x0

MMC/SD response

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 145

5.11.11 FIFO Status

5.11.12 FIFO Flag Configuration

Address: 0x2C Reset = 0x0 Type: RO

Name Bit Function Reset

CID/CSD[103:72] 31-0 Contains either the CID fields or CSD fields if a command is issued that

queries this information.

0x0

MMC/SD response

Address: 0x30 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-24 Reserved

CID/CSD[127:104] 23-0 Contains either the CID fields or CSD fields if a command is issued that

queries this information.

0x0

FIFO status

Address: 0x34 Reset = 0x80 Type: RO/WO

Name Bit Function Reset

rx_flush 31 When this bit is written ‘1’, the receive fifo is flushed.

This bit is a write only bit.

0x0

tx_flush 30 When this bit is written ‘1’, the transmit fifo is flushed.

This bit is a write only bit.

0x0

29-16

rx_byte_count 15-8 Indicates how many bytes of data is present in the receive fifo.

This is a read only field.

0x0

tx_byte_count 7-0 Indicates how many bytes of free space is available in the transmit fifo.

This is a read only field.

0x80

FIFO flag Configuration

Address: 0x38 Reset = 0x4040 Type: RW

Name Bit Function Reset

Reserved 31-16 Reserved

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor146

5.11.13 Transmit FIFO

The Transmit FIFO operates as a fifo even though it has a range of addresses. The wider range allows bus bursting

to fill the fifo.

5.11.14 Receive FIFO

The Receive FIFO operates as a fifo even though it has a range of addresses. The wider range allows bus bursting

to drain the fifo.

5.12 MMCPlus Control Registers

The MMCPLUS register map is summarized below and described in the following sections.

rx_half_empty 15-8 Sets the FIFO level (in bytes) that asserts the receive “half” empty flag. The

level setting is associated with how much data is in the FIFO. i.e if the setting

is 0x20, then when there is 0x20 bytes of data available in the FIFO, the

interrupt will be asserted.

0x40

tx_half_full 7-0 Sets the FIFO level (in bytes) that asserts the transmit “half” full flag. The level

setting is associated with how much data is in the FIFO. i.e if the setting is

0x20, then when there is 0x20 bytes of data available in the FIFO, the interrupt

will be asserted.

0x40

Transmit FIFO

Address: 0x1000-0x1fff Reset = 0x0 Type: WO

Name Bit Function Reset

data 31-0 This field contains the data to be written to the fifo. This register supports 8,16

or 32 bit writes and pushes the appropriate amount of data into the fifo. The

size of the access must match the size that is programmed into the tx_fifo_size

field in the Configuration1 register.

0x0

Receive FIFO

Address: 0x2000-0x2fff Reset = 0x0 Type: WO

Name Bit Function Reset

data 31-0 This field contains the data to be read from the fifo. This register supports

8,16 or 32 bit reads and pops the appropriate amount of data from the fifo.

The size of the access must match the size that is programmed into the

rx_fifo_size field in the Configuration1 register.

0x0

Interrupt Source 0x00 RO

Interrupt Mask 0x04 RW

Interrupt Clear 0x08 WO

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 147

5.12.1 Interrupt Source Register

The interrupt source register contains the raw unmasked interrupts and can be used for polling purposes (instead

of the external interrupt pin) or for determining which interrupt(s) have caused the external interrupt pin to assert.

MMCPLUS clock rate 0x0C RW

MMCPLUS Configuration 0x10 RW

MMCPLUS Data Control 0x14 RW

MMCPLUS argument 0x18 RW

MMCPLUS command 0x1C RW

MMCPLUS command response 0x20 RO

MMCPLUS response 0x24-0x30 RO

fifo status 0x34 RO/WO

fifo flag Configuration 0x38 RW

reserved 0x3C-0xfff

transmit fifo 0x1000-0x1fff WO

receive fifo 0x2000-0x2fff RO

Interrupt Source Register

Address: 0x00 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-20 Reserved

dat3 19 This is not an interrupt but reflects the current state of the mmc_data3 signal. 0x0

sdio_interrupt 18 SDIO cards have a card interrupt mechanism. This bit is the indicator for that

interrupt and is only applicable to SDIO cards. This interrupt source can be

masked but not cleared by the interrupt clear register. It must be cleared

within the SDIO card itself.

0x0

data_complete 17 Indicates that an MMCPLUS data operation (read or write) is complete. 0x0

data_crc 16 Indicates that for an MMCPLUS data operation, the CRC check failed. 0x0

response 15 Indicates that for MMCPLUS operation, an MMCPLUS response is available

in the response buffer.

0x0

response_crc 14 Indicates that the received MMCPLUS response has a CRC check failure. 0x0

dat3_low 13 This interrupt is asserted when the data state machine is idle and the

mmc_data3 is low.

0x0

dat3_high 12 This interrupt is asserted when the data state machine is idle and the

mmc_data3 is high.

0x0

cmd_complete 11 Indicates that the current MMCPLUS command has been sent. 0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor148

5.12.2 Interrupt Mask Register

The interrupt mask register provides a mechanism to individually mask one or more of the interrupt sources.

busy 10 Indicates that an MMCPLUS card "busy" condition is no longer present. i.e.

the card is no longer busy.

0x0

tx_pop_error 9 asserted when the transmit fifo experiences an overrun condition or

misaligned access. This error is from the perspective of the external

interface.

0x0

rx_push_error 8 asserted when the receive fifo experiences an underrun condition or

misaligned access. This error is from the perspective of the external

interface.

0x0

dma_pop_error 7 asserted when the receive fifo experiences an underrun condition or

misaligned access. This error is from the perspective of the internal APB

bus.

0x0

dma_push_error 6 asserted when the transmit fifo experiences an overrun condition or

misaligned access. A misaligned access can occur if the width of the write

has changed from a previous access. For example, if byte writes have

previously been used, the number of writes may be non-multiples of 32 bits.

If a 32 bit write now occurs, this is a misaligned access because the byte

pointers in the fifo are not pointing to byte ’0’. This error is from the

perspective of the internal APB bus.

0x0

rx_ff 5 asserted when the receive fifo has become full 0x0

rx_hf 4 asserted when the receive fifo level (amount of bytes in the fifo) has risen

above the software configured “half” empty level.

0x0

rx_fe 3 asserted when the receive fifo has become NOT empty 0x0

tx_ff 2 asserted when the transmit fifo has become NOT full 0x0

tx_hf 1 asserted when the transmit fifo level (amount of space available) has risen

above the software configured “half” full level.

0x0

tx_fe 0 asserted when the transmit fifo has become empty 0x0

Interrupt Mask Register

Address: 0x04 Reset = 0x7FFFF Type: RW

Name Bit Function Reset

Reserved 31-19 Reserved

sdio_interrupt 18 Masks the interrupt. 1=mask, 0=unmask. 0x1

data_complete 17 Masks the interrupt. 1=mask, 0=unmask. 0x1

data_crc 16 Masks the interrupt. 1=mask, 0=unmask. 0x1

response 15 Masks the interrupt. 1=mask, 0=unmask. 0x1

response_crc 14 Masks the interrupt. 1=mask, 0=unmask. 0x1

dat3_low 13 Masks the interrupt. 1=mask, 0=unmask. 0x1

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 149

5.12.3 Interrupt Clear Register

The interrupt clear register provides the mechanism for clearing the raw interrupt sources. Writing a „1. to the

interrupt bit location will clear the interrupt.

dat3_high 12 Masks the interrupt. 1=mask, 0=unmask. 0x1

cmd_complete 11 Masks the interrupt. 1=mask, 0=unmask. 0x1

busy 10 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_pop_error 9 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_push_error 8 Masks the interrupt. 1=mask, 0=unmask. 0x1

dma_pop_error 7 Masks the interrupt. 1=mask, 0=unmask. 0x1

dma_push_error 6 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_ff 5 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_hf 4 Masks the interrupt. 1=mask, 0=unmask. 0x1

rx_fe 3 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_ff 2 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_hf 1 Masks the interrupt. 1=mask, 0=unmask. 0x1

tx_fe 0 Masks the interrupt. 1=mask, 0=unmask. 0x1

Interrupt Clear Register

Address: 0x08 Reset = 0x0 Type: WO

Name Bit Function Reset

31-18

data_complete 17 Clears the interrupt when written ‘1’. 0x0

data_crc 16 Clears the interrupt when written ‘1’. 0x0

response 15 Clears the interrupt when written ‘1’. 0x0

response_crc 14 Clears the interrupt when written ‘1’. 0x0

dat3_low 13 Clears the interrupt when written ‘1’. 0x0

dat3_high 12 Clears the interrupt when written ‘1’. 0x0

cmd_complete 11 Clears the interrupt when written ‘1’. 0x0

busy 10 Clears the interrupt when written ‘1’. 0x0

tx_pop_error 9 Clears the interrupt when written ‘1’. 0x0

rx_push_error 8 Clears the interrupt when written ‘1’. 0x0

dma_pop_error 7 Clears the interrupt when written ‘1’. 0x0

dma_push_error 6 Clears the interrupt when written ‘1’. 0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor150

5.12.4 MMC PLUS Clock Rate

5.12.5 MMCPLUS Configuration

rx_ff 5 Clears the interrupt when written ‘1’. 0x0

rx_hf 4 Clears the interrupt when written ‘1’. 0x0

rx_fe 3 Clears the interrupt when written ‘1’. 0x0

tx_ff 2 Clears the interrupt when written ‘1’. 0x0

tx_hf 1 Clears the interrupt when written ‘1’. 0x0

tx_fe 0 Clears the interrupt when written ‘1’. 0x0

MMCPLUS clock rate

Address: 0x0C Reset = 0x80000000 Type: RW

Name Bit Function Reset

disable 31 This bit provides a lower power standby condition when the SD interface is in

use. Setting this bit will halt the clock such that the external serial clock is low.

Power-up default is a disabled clock. Software must ensure that the proper

divide is programmed prior to enabling the clock. Also, it is recommended to

disable the clock whenever a clock_rate_divider change is required so that

spurious clock pulses do not occur.

0x1

30-20 reserved

ext_clock_delay 19-16 mmcplus external clock delay

mmc_clock_out is delayed in proportion to this value.

0x0

clock_divider 15-0 The interface PLL clock is divided by the contents of this field to produce the

serial clock. A divider of 2 or greater is valid.

0x0

MMCPLUS Configuration

Address: 0x10 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-14Reserved

data_width 13:12 Configures the width of the external data bus.

00 = 1-bit data

01 = 4-bit data

10 = 8-bit data

11 = reserved

0x0

reserved 11:10 Reserved

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 151

5.12.6 MMCPLUS Data Control

This register is used to indicate to hardware the data path activity associated with a particular command. This

tx_fifo_size 9-8 Although the asynchronous fifo supports writes of varying sizes (8,16,32 or

64) the size must be configured prior to using the fifo. This size refers to the

side of the fifo that the internal bus or dma engine writes to. If this field is being

updated, the fifo must be flushed to ensure that the internal pointers are

properly aligned.

00 = 8 bit

01 = 16 bit

10 = 32 bit

11 = 64 bit

0x0

rx_fifo_size 7-6 Although the asynchronous fifo supports reads of varying sizes (8,16,32 or 64)

the size must be configured prior to using the fifo. This size refers to the side

of the fifo that the internal bus or dma engine reads from. If this field is being

updated, the fifo must be flushed to ensure that the internal pointers are

properly aligned.

00 = 8 bit

01 = 16 bit

10 = 32 bit

11 = 64 bit

0x0

enable 5 This allows the media interface to function or holds it in an in-operative state.

0=disable

1=enable.

0x0

reserved 4 reserved 0x0

block_size 3-0 This field indicates how many bytes are associated with a block for any read

or write transaction. The hardware uses this field to break larger data lengths

into block size chunks. The block size is defined as 2block_size.

0=reserved, 1=2bytes, 2=4bytes, 3=8bytes, 4=16bytes, 5=32bytes,

6=64bytes, 7=128bytes, 8=256bytes, 9=512bytes, 10=1Kbytes, 11=2Kbytes,

12=4Kbytes, 13=8Kbytes, 14=16Kbytes, 15=32Kbytes

0x0

MMCPLUS Data Control

Address: 0x14 Reset = 0x0 Type: RW

Name Bit Function Reset

data_size 31-16 This field indicates how many bytes are transferred before signaling a

completion interrupt. This field must be an integer multiple of the configured

block size. When this register is read, the data_size field will reflect how many

bytes of data remain to be transferred.

0x0

15-2

data_ena 1 Data path operation will not commence until this bit is enabled.

0=disable

1=enable.

0x0

data_direction 0 0=read

1=write.

0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor152

5.12.7 MMCPLUS Agreement

5.12.8 MMCPLUS Command

5.12.9 MMCPLUS Command Response

MMCPLUS Argument

Address: 0x18 Reset = 0x0 Type: RW

Name Bit Function Reset

cmd_argument 31-0 This contains the argument for the command to be sent to the SD card. A read

of the register will provide the previous command argument that was written

0x0

MMCPLUS Command

Address: 0x1C Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-11 Reserved

response_type 10-8 This field indicates to the hardware the type of response that is expected for

the particular command issued.

000=response type R1 or R6

001=rsponse type R1b

010=response type R2

011=response type R3 or R4

100=no response.

0x0

data_command 6 This bit is only applicable to SDIO cards that make use of the interrupt feature

on mmc_data1. Also it is only applicable when the interface is configured for

the 4 bit mode of operation which will use mmc_data1 as a data line. Under

this scenario the SDIO interrupt has a window of opportunity that it is valid. For

hardware to understand that window of opportunity it must know whether the

command that is being issued is associated with data or not.

1 = command is a data related command (read or write operation)

0 = command is not data related.

0x0

command_index 5-0 This is the command index to be sent to the SD card. The action of writing to

this register initiates the command transfer process. A read of the register will

provide the previous command index that was written.

0x0

MMCPLUS command response

Address: 0x20 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-6 Reserved

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 153

5.12.10 MMCPLUS Response

5.12.11 FIFO Status

command_index 5-0 Contains the command index field of the last received response. If the

response is type R2 or R3 the field will be ’111111’.

0x0

MMCPLUS response

Address: 0x24 Reset = 0x0 Type: RO

Name Bit Function Reset

card_status

CID/CSD[39:8]

31-0 These registers are used to store the current SD response. If the response is

type R1, R1b or R6 only the first 32 bits of the response field are valid

Contains the card status field of the response or contains either the CID fields

or CSD fields if a command is issued that queries this information.

0x0

MMCPLUS response

Address: 0x28 Reset = 0x0 Type: RO

Name Bit Function Reset

CID/CSD[71:40] 31-0 Contains either the CID fields or CSD fields if a command is issued that

queries this information.

0x0

MMCPLUS response

Address: 0x2C Reset = 0x0 Type: RO

Name Bit Function Reset

CID/CSD[103:72] 31-0 Contains either the CID fields or CSD fields if a command is issued that

queries this information.

0x0

MMCPLUS response

Address: 0x30 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-24 Reserved

CID/CSD[127:104] 23-0 Contains either the CID fields or CSD fields if a command is issued that

queries this information.

0x0

FIFO status

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor154

5.12.12 FIFO Flag Configuration

5.12.13 Transmit FIFO

The Transmit FIFO operates as a fifo even though it has a range of addresses. The wider range allows bus bursting

to fill the fifo.

Address: 0x34 Reset = 0x80 Type: RO/WO

Name Bit Function Reset

rx_flush 31 When this bit is written ‘1’, the receive fifo is flushed.

This bit is a write only bit.

0x0

tx_flush 30 When this bit is written ‘1’, the transmit fifo is flushed.

This bit is a write only bit.

0x0

Reserved 29-16 Reserved

rx_byte_count 15-8 Indicates how many bytes of data is present in the receive fifo.

This is a read only field.

0x0

tx_byte_count 7-0 Indicates how many bytes of free space is available in the transmit fifo.

This is a read only field.

0x80

FIFO flag Configuration

Address: 0x38 Reset = 0x4040 Type: RW

Name Bit Function Reset

Reserved 31-16 Reserved

rx_half_empty 15-8 Sets the FIFO level (in bytes) that asserts the receive “half” empty flag. The

level setting is associated with how much data is in the FIFO. i.e if the setting

is 0x20, then when there is 0x20 bytes of data available in the FIFO, the

interrupt will be asserted.

0x40

tx_half_full 7-0 Sets the FIFO level (in bytes) that asserts the transmit “half” full flag. The level

setting is associated with how much data is in the FIFO. i.e if the setting is

0x20, then when there is 0x20 bytes of data available in the FIFO, the interrupt

will be asserted.

0x40

Transmit FIFO

Address: 0x1000-0x1fff Reset = 0x0 Type: WO

Name Bit Function Reset

data 31-0 This field contains the data to be written to the fifo. This register supports 8,16

or 32 bit writes and pushes the appropriate amount of data into the fifo. The

size of the access must match the size that is programmed into the tx_fifo_size

field in the Configuration1 register.

0x0

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 155

5.12.14 Receive FIFO

The Receive FIFO operates as a fifo even though it has a range of addresses. The wider range allows bus bursting

to drain the fifo.

5.13 I2C Registers

The register map is summarized below and described in the following sections.

5.13.1 Interrupt Source Register

The interrupt source register contains the raw unmasked interrupts and can be used for polling purposes (instead

of the external interrupt pin) or for determining which interrupt(s) have caused the external interrupt pin to assert.

Receive FIFO

Address: 0x2000-0x2fff Reset = 0x0 Type: WO

Name Bit Function Reset

data 31-0 This field contains the data to be read from the fifo. This register supports 8,16

or 32 bit reads and pops the appropriate amount of data from the fifo. The size

of the access must match the size that is programmed into the rx_fifo_size

field in the Configuration1 register.

0x0

Interrupt Source 0x00 RO

Interrupt Mask 0x04 RW

Interrupt Clear 0x08 WO

Configuration1 0x0C RW

Configuration2 0x10 RW

Configuration3 0x14 RW

Slave Address 0x18 RW

Target Data 0x1C RW

Target Address 0x20 RW

Control 0x24 WO

Interrupt Source Register

Address: 0x00 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-4 Reserved

arb_lost 3 Indicates that arbitration has been lost to another I2C master. 0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor156

5.13.2 Interrupt Mask Register

The interrupt mask register provides a mechanism to individually mask one or more of the interrupt sources.

5.13.3 Interrupt Clear Register

The interrupt clear register provides the mechanism for clearing the raw interrupt sources. Writing a „1. to the

interrupt bit location will clear the interrupt.

5.13.4 Configuration1

no_acknowledge 2 Indicates that an acknowledge was not received when the Slave ID was

sent or that an acknowledge was not received during the data phase

of a write transaction.

0x0

stop 1 Indicates that the “transaction stop” is complete. The serial interface

runs at a very slow rate and a stop indication must be completed before

software initiates a new “transaction start”.

0x0

acknowledge_complete 0 Indicates that the peripheral has acknowledged the transaction phase. 0x0

Interrupt Mask Register

Address: 0x04 Reset = 0xf Type: RW

Name Bit Function Reset

Reserved 31-

Reserved

arb_lost_mask 3 Masks the interrupt. 1=mask, 0=unmask. 0x1

no_acknowledge_mask 2 Masks the interrupt. 1=mask, 0=unmask. 0x1

stop_mask 1 Masks the interrupt. 1=mask, 0=unmask. 0x1

acknowledge_mask 0 Masks the interrupt. 1=mask, 0=unmask. 0x1

Interrupt Clear Register

Address: 0x08 Reset = 0x0 Type: WO

Name Bit Function Reset

Reserved 31-4 Reserved

arb_lost_clr 3 Clears the interrupt when written ‘1’. 0x0

no_acknowledge_clr 2 Clears the interrupt when written ‘1’. 0x0

stop_clr 1 Clears the interrupt when written ‘1’. 0x0

acknowledge_clr 0 Clears the interrupt when written ‘1’. 0x0

Configuration1

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 157

5.13.5 Configuration2

Address: 0x0C Reset = 0x0 Type: RW

Name Bit Function Reset

master_ack 31 This bit provides the flexibility to allow or not allow the master to source an

acknowledge for read transactions. When ‘1’, the master will source an

acknowledge for read transactions. When ‘0’, the serial data line is not driven

during the acknowledge bit period.

0x0

prim_sec 30 The I2C block is physically connected to two sets of IO pins. The primary pins

do not have any sharing but the secondary pins are shared with

dip_data[17:16]. The duplication of I2C pins is required in some

circumstances because of the IO voltage selections. The DIP IOs can be

powered with a different IO voltage than the primary I2C IOs. If the I2C is

required to configure a DAC, them the secondary I2C port will have to be

used if the DIP IOs are not compatible with the I2C IOs. This bit selects which

set of IOs that the I2C communicates with. It is possible to have devices

connected to both primary and secondary IOs as long as this selector is

properly configured for the duration of the I2C communication. When set to

the primary I2C, the secondary I2C sees no activity and vice versa.

0 = I2C connected to primary I2C IOs.

1 = I2C connected to secondary I2C IOs.

0x0

auto_mode_ena 29 When this bit is set a more auto-mated mode of the I2C interface is

enabled and results in less interrupt over-head. Refer to

Programming Model 4.9.2 for a detailed decription of manual and

automatic modes.

0 = manual mode

1 = auto-matic mode

master_arb_ena 28 When this bit is set the arbitration logic for multiple master systems is

enabled.

0 = arbitration logic is disabled.

1 = arbitration logic is enabled.

Reserved 27-16 Reserved

clock_divider 15-0 This field contains the clock divider that is applied to the system clock to

generate the serial data clock. The clock divide ratio applied to the system

clock is this field plus one.

0x0

Configuration2

Address: 0x10 Reset = 0x0 Type: RW

Name Bit Function Reset

TSUSTO 31-16 This field contains the count value that is applied to the system clock to

generate the TSUSTO timing parameter. This parameter is the minimum time

from serial_clock rising to serial_data rising during a “stop” indication. This is

typically 4.0 µsec.

0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor158

5.13.6 Configuration3

5.13.7 Slave Address

5.13.8 Target Data

THDSTA 15-0 This field contains the count value that is applied to the system clock to

generate the THDSTA timing parameter. This parameter is the minimum time

from serial_data falling to serial_clock falling during a “start” indication. This is

typically 4.0 µsec.

0x0

Configuration3

Address: 0x14 Reset = 0x0 Type: RW

Name Bit Function Reset

TDELAY 31-16 This field contains the count value that is applied to the system clock to

generate the TDELAY timing parameter. This parameter is the delay time

between a slave address byte transmission and the next byte (read or write),

the time between consecutive bytes (read or write), as well as the time

between the last byte (read or write) and the stop condition. It should be

noted that the hardware also automatically checks for the I2C slave stall

indicator (SCL held low) and will stall its activity until the stall condition is

removed.

0x0

TBUF 15-0 This field contains the count value that is applied to the system clock to

generate the TBUF timing parameter. This parameter is the minimum idle

time between a start and stop condition. This is typically 4.7 µsec.

0x0

Slave Address

Address: 0x18 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-8 Reserved

slave_id 7-1 This field contains the slave id of the peripheral being accessed. It should be

programmed prior to initiating any transactions.

0x0

read_write 0 This is the R/W field for the Peripheral slave address. 1=read, 0=write. 0x0

Target Data

Address: 0x1C Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-8 Reserved

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 159

5.13.9 Target Address

5.13.10 Control

5.14 PWM Registers

The register map is summarized below and described in the following sections.

data 7-0 For I2C write transactions, the target data field is the third byte of data transmitted after

the target address and is the data to be written to that target address. If the interface is

operating in manual mode, new data can be written after the “acknowledge” interrupt is

received.

For read transactions, this register will not provide valid information until a transaction

is started. Once a transaction is started, when an acknowledge interrupt has been

received, valid read data will be present in this register. If the register is read prior to

issuing a stop command, another read will occur on the serial control bus. If a stop has

been issued, valid data from the read is present and no further action results.

0x0

Target Address

Address: 0x20 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-8 Reserved

address 7-0 The first byte of an I2C write transaction (after the slave address byte) is the

address of the register that is being accessed. This field is programmed with

that device address.

0x0

Control

Address: 0x24 Reset = 0x0 Type: WO

Name Bit Function Reset

Reserved 31-2 Reserved

stop 1 When this bit is written “1”, the serial control interface will create a stop

condition.

0x0

start 0 When this bit is written “1”, the serial control interface will create a start

condition, serialize out the data in the slave address register and either

serialize out the data in the data register for a write or de-serialize the

incoming data for a read.

0x0

pwm config 0x00 RW

pwm control 0x04 RW

compare buffer 0 0x08 RW

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor160

5.14.1 PWM Config

5.14.2 PWM Control

count buffer 0 0x0C RW

status 0 0x10 RO

compare buffer 1 0x14 RW

count buffer 1 0x18 RW

status 1 0x1C RO

raw interrupt 0x20 RO

PWM Config

Address: 0x00 Reset = 0xc0_0000 Type: RW

Name Bit Function Reset

Reserved 31-26 Reserved 0x0

t1_timeout_clr 25 Clears the timer 1 timeout interrupt. This bit is self-clearing.

1 = clear interrupt.

0x0

t0_timeout_clr 24 Clears the timer 0 timeout interrupt. This bit is self-clearing.

1 = clear interrupt.

0x0

int_mask 23-22 Mask for the two timer interrupts.

1 = interrupt is masked

0 = interrupt is not masked

0x3

t1_clk_sel 21-19 Mux selector for the PWM timer1.

000: ½

001: ¼

010: 1/8

011: 1/16

1xx: TCLK0

0x0

t0_clk_sel 18-16 Mux selector for the PWM timer0.

000: ½

001: ¼

010: 1/8

011: 1/16

1xx: TCLK0

0x0

dead_zone_length 15-8 Specifies the dead zone length 0x0

prescaler 7-0 Specifies the pre-scaler value 0x0

PWM Control

Address: 0x04 Reset = 0x0 Type: RW

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 161

5.14.3 Compare Buffer 0

5.14.4 Count Buffer 0

Name Bit Function Reset

Reserved 31-9 Reserved 0x0

t1_auto_reload 8 Controls the auto reload function of timer 1.

0 = one shot

1 = interval mode (auto reload)

0x0

t1_inverter 7 Controls the output inverter for timer 1.

0 = inverter off

1 = inverter on

0x0

t1_update 6 Controls the manual update for timer 1.

0 = no operation

1 = the timer is updated with the count buffer value.

0x0

t1_start 5 Controls the operation of timer 1.

0 = timer stopped

1 = timer started

0x0

dead_zone_en 4 Controls the dead zone operation

0 = disabled

1 = enabled

0x3

t0_auto_reload 3 Controls the auto reload function of timer 0.

0 = one shot

1 = interval mode (auto reload)

0x0

t0_inverter 2 Controls the output inverter for timer 0.

0 = inverter off

1 = inverter on

0x0

t0_update 1 Controls the manual update for timer 0.

0 = no operation

1 = the timer is updated with the count buffer value.

0x0

t0_start 0 Controls the operation of timer 0.

0 = timer stopped

1 = timer started

0x0

Compare buffer 0

Address: 0x08 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-16 Reserved 0x0

t0_com_buffer 15-0 Timer 0 compare buffer. 0x0

Count buffer 0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor162

5.14.5 Status 0

5.14.6 Compare Buffer 1

5.14.7 Count Buffer 1

5.14.8 Status 1

Address: 0x0C Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-16 Reserved 0x0

t0_count_buffer 15-0 Timer 0 count buffer. 0x0

Status 0

Address: 0x10 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-16 Reserved 0x0

t0_timer_cnt 15-0 Timer 0 count observation register. 0x0

Compare buffer 1

Address: 0x14 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-16 Reserved 0x0

t1_com_buffer 15-0 Timer 1 compare buffer. 0x0

Count buffer 1

Address: 0x18 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-16 Reserved 0x0

t1_count_buffer 15-0 Timer 1 count buffer. 0x0

Status 1

Address: 0x1C Reset = 0x0 Type: RO

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 163

5.14.9 Raw Interrupt

5.15 KeyScan Registers

The register map is summarized below and described in the following sections.

Name Bit Function Reset

Reserved 31-16 Reserved 0x0

t1_timer_cnt 15-0 Timer 1 count observation register. 0x0

Raw Interrupt

Address: 0x20 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-2 Reserved 0x0

t1_timeout 1 Timer 1 timeout interrupt. 0x0

t0_timeout 0 Timer 0 timeout interrupt. 0x0

Interrupt Mask 0x00 RW

Interrupt Source 0x04 RO

Interrupt Clear 0x08 RW

Keypad control0 0x0C RW

Keypad control1 0x10 RW

Keypad time 0x14 RW

Keypad value 0x18 RO

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor164

5.15.1 Interrupt Mask Register

The interrupt mask register provides a mechanism to individually mask one or more of the interrupt sources.

5.15.2 Interrupt Source Register

The interrupt source register contains the masked interrupts and can be used for polling purposes (instead of the

external interrupt pin) or for determining which interrupt(s) have caused the external interrupt pin to assert.

5.15.3 Interrupt Clear Register

The interrupt clear register provides the mechanism for clearing the interrupt sources. Writing a „1. to the interrupt

bit location will clear the interrupt.

Reading this register returns unmasked interrupt source that is interrupt source pending register.

5.15.4 Keypad Control0

Interrupt Mask Register

Address: 0x00 Reset = 0xFFFF Type: RW

Name Bit Function Reset

Reserved 31-16Reserved

Key sensing 15-0 Masks the interrupt. 1=mask, 0=unmask. 0xFFFF

Interrupt Source Register

Address: 0x01Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-16Reserved

Key sensing 15-0 Each key sense is detected by hardware. 0x0000

Interrupt Clear Register

Address: 0x08 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-16Reserved

Key sensing 15-0 Writing a ‘1’ : relative interrupt source will be cleared.

Reading : returns unmasked interrupt source

0x0000

Keypad control0

Address: 0x0C Reset = 0x0 Type: RW

Name Bit Function Reset

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 165

5.15.5 Keypad Control1

Reserved 31-6 Reserved 0x0

keypad_enable 5 Keypad operation enable

1 = enable

0 = disable

0x0

polarity 4 Keyscan output and key sense polarity

1 = active high (external pull-down)

0 = active low (external pull-up)

0x0

mode_sel 3 1 = single input mode. When in this mode, keypad module will sense only one

button at a time. It is used in typing mode.

0 = multi input mode. When in this mode, keypad mo dule will sense

multi-button at a time. It is useful in gami ng mode that requires moving

diagonal and shooting with moving.

0x0

Reserved 2 Reserved 0

auto_clr 1 Keypad auto clear enable. When enabled, the keypad value register is

cleared after it is read.

1 = enabled

0 = disabled

0x0

value_clr 0 keypad register clear. This bit is self resetting

1 = the keypad value register is cleared.

0 = no action

0x3

Keypad Control 1

Address: 0x10 Reset = 0x0 Type: RW

Name Bit Function Reset

Reserved 31-8 Reserved

keysense3_en 7 Keysense3 enable

1 : enable

0 : disable

0x0

keysense2_en 6Keysense2 enable

1 : enable

0 : disable

0x0

keysense1_en 5Keysense1 enable

1 : enable

0 : disable

0x0

keysense0_en 4Keysense0 enable

1 : enable

0 : disable

0x0

keyscan3_en 3Keyscan3 enable

1 : enable

0 : disable

0x0

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor166

5.15.6 Keypad Time

5.15.7 Keypad Value

The following table illustrates the sense_value vector.

5.16 GPIO Registers

The General Purpose Input Output (GPIO) pins are controlled with several registers.

• GPIO Enable Registers activate the pin for GPIO use, otherwise the pin has its primary or alternate function.

• GPIO Direction Registers determine the GPIO as input or output.

keyscan2_en 2Keyscan2 enable

1 : enable

0 : disable

0x0

keyscan1_en 1Keyscan1 enable

1 : enable

0 : disable

0x0

keyscan0_en 0Keyscan0 enable

1 : enable

0 : disable

0x0

Keypad time

Address: 0x14 Reset = 0x1FFF Type: RW

Name Bit Function Reset

Reserved 31-13 Reserved 0x0

scan_time 12-0 Key scan driving time. Scan_time_freq = sys_freq / (scan_time+1) 0x1FFF

Keypad value

Address: 0x18 Reset = 0x0 Type: RO

Name Bit Function Reset

Reserved 31-16 Reserved 0x0

sense_value 15-0 Contains the sense value vector. This vector is a dynamic view of the key

sense information and will change for every key scan interval. If a latched

version of this field is desired, please read the interrupt source register.

0x0

key_sense3 key_sense2 key_sense1 key_sense0

key_scan3 sense_value15 sense_value14 sense_value13 sense_value12

key_scan2 sense_value11 sense_value10 sense_value9 sense_value8

key_scan1 sense_value7 sense_value6 sense_value5 sense_value4

key_scan0 sense_value3 sense_value2 sense_value1 sense_value0

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 167

• GPIO OutData Registers determine the level of the GPIO when configured as output.

• GPIO InData Registers read the level of GPIO when configured as input.

In case a GPIO pin is used as output, it is preferable to activate the enable bit once the direction and OutData have

been set.

See also Section 2.4, Pin Configuration and Section 4.12, GPIOs and Alternate Functions.

5.16.1 GPIO Enable Registers

5.16.2 GPIO Direction Registers

Table 84. GPIO Enable Registers

GPIO Enable 1

Address: 0xd00a_0000 Reset = 0 Type: RW

Name Bit Function Reset

gpio_enable[31-0] 31-0 These bits are used to enable the alternate GPIO functionality for the

external pins listed in the preceding table.

0 = GPIO disabled

1 = GPIO enabled

GPIO Enable 2

Address: 0xd00a_0004 Reset = 0 Type: RW

Name Bit Function Reset

gpio_enable[63-32]] 31-0 These bits are used to enable the alternate GPIO functionality for the

external pins listed in the preceding table.

0 = GPIO disabled

1 = GPIO enabled

GPIO Enable 3

Address: 0xd00a_0008 Reset = 0 Type: RW

Name Bit Function Reset

gpio_enable[95-64] 31-0 These bits are used to enable the alternate GPIO functionality for the

external pins listed in the preceding table.

0 = GPIO disabled

1 = GPIO enabled

Table 85. GPIO direction Registers

GPIO Direction 1

Address: 0xd00a_000C Reset = 0xffff_ffff Type: RW

Name Bit Function Reset

SCP220x ICP Family, Rev.2.1

Registers

Freescale Semiconductor168

5.16.3 GPIO OutData Registers

gpio_dir[31-0] 31-0 If a GPIO has been enabled these bits configure the GPIO as either

an input or output.

0 = output

1 = input

0xffff_ffff

GPIO Direction 2

Address: 0xd00a_0010 Reset = 0xffff_ffff Type: RW

Name Bit Function Reset

gpio_dir[63-32] 31-0 If a GPIO has been enabled these bits configure the GPIO as either

an input or output.

0 = output

1 = input

0xffff_ffff

GPIO Direction 3

Address: 0xd00a_0014 Reset = 0xffff_ffff Type: RW

Name Bit Function Reset

gpio_dir[95-64] 31-0 If a GPIO has been enabled these bits configure the GPIO as either

an input or output.

0 = output

1 = input

0xffff_ffff

Table 86. GPIO OutData Registers

GPIO OutData 1

Address: 0xd00a_0018 Reset = 0 Type: RW

Name Bit Function Reset

gpio_out[31-0] 31-0 When the register is written, the GPIO will latch the written value if

the GPIO is an output. For an input the write is ignored. When read,

it will reflect what was previously written (whether or not the GPIO is

configured as an input or output).

GPIO OutData 2

Address: 0xd00a_001c Reset = 0 Type: RW

Name Bit Function Reset

gpio_out[63-32] 31-0 When the register is written, the GPIO will latch the written value if

the GPIO is an output. For an input the write is ignored. When read,

it will reflect what was previously written (whether or not the GPIO is

configured as an input or output).

Table 85. GPIO direction Registers

Registers

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 169

5.16.4 GPIO InData Registers

GPIO OutData 3

Address: 0xd00a_0020 Reset = 0 Type: RW

Name Bit Function Reset

gpio_out[95-64] 31-0 When the register is written, the GPIO will latch the written value if

the GPIO is an output. For an input the write is ignored. When read,

it will reflect what was previously written (whether or not the GPIO is

configured as an input or output).

Table 87. GPIO InData Registers

GPIO InData 1

Address: 0xd00a_0024 Reset = 0 Type: RO

Name Bit Function Reset

gpio_in[31-0] 31-0 When this register is read, the bits reflect the level of the external

signal if the GPIO is an input or reflects the previously written value

if the GPIO is an output.

GPIO InData 2

Address: 0xd00a_0028 Reset = 0 Type: RO

Name Bit Function Reset

gpio_in[63-32] 31-0 When this register is read, the bits reflect the level of the external

signal if the GPIO is an input or reflects the previously written value

if the GPIO is an output.

GPIO InData 3

Address: 0xd00a_002c Reset = 0 Type: RO

Name Bit Function Reset

gpio_in[95-64] 31-0 When this register is read, the bits reflect the level of the external

signal if the GPIO is an input or reflects the previously written value

if the GPIO is an output.

Table 86. GPIO OutData Registers

SCP220x ICP Family, Rev.2.1

Packaging

Freescale Semiconductor170

6 Packaging

6.1 SCP2201

The SCP2201 is available in a 236-ball BGA package of size 9 mm x 9 mm x 1.34 mm. Figure 57 contains SCP220x

packaging information. All dimensions are in mm.

Figure 58. SCP2201 Package

6.2 SCP2207

The SCP2207 is available in a 236-ball BGA package of size 9 mm x 9 mm x 1.34 mm. The following figure contains

SCP220x packaging information. All dimensions are in mm.

0.10 C

236 SOLDER BALLS

A1 BALL PAD CORNER

TOP VIEW

SIDE VIEW

BOTTOM VIEW

15131197531

161412108642

0.50

0.10 (4X)

A9.00

9.00

(0.75)

0.50

(0.75)

0.08 C

0.15

0.05 C

CAB

0.23 0.05

SEATING PLANE

1.24 0.10

0.80 0.05

0.30 0.05

Packaging

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 171

Figure 59. SCP2207 Package

6.3 SCP220x Pinout

The following table describes the physical pins of the devices belonging to the SCP220x series. The pins are

organized into functional groups. External interfaces are grouped together on the IO voltage banks that can be

programming the device. The output drive capability is indicated in the PAD type column.

Note that ‘-’. indicates the pin does not apply to the device as the signal is not balled out on the package. Pins in the

‘No Connect’ section of the table are used solely for test purposes and should not be used in normal operating mode.

Some pins are designated ‘reserved_#’. These pins may only be used as the corresponding GPIOs or alternate

functionality as defined in section 4.11. Primary functionality of these pins is reserved and not intended for use.

SCP220x ICP Family, Rev.2.1

Packaging

Freescale Semiconductor172

Table 88. SCP220x Pinout

Pin Name Power Domain PAD Type Default PU/PD

SCP2201

and

SCP2207

Ball

Sensor

sensor_D[0] SIF Input PD C6

sensor_D[1] SIF Input PD C7

sensor_D[2] SIF Input PD D7

sensor_D[3] SIF Input PD E7

sensor_D[4] SIF Input PD B8

sensor_D[5] SIF Input PD C8

sensor_D[6] SIF Input PD D8

sensor_D[7] SIF Input PD E8

sensor_D[8] SIF Input PD B9

sensor_D[9] SIF Input PD C9

sensor_fclk SIF Input PD B11

sensor_pclk SIF Input PD E9

sensor_rclk SIF Input PD D9

sensor_fodd SIF Bi-dir. 4 mA / 8 mA - C10

sensor_gpio SIF Bi-dir. 4 mA / 8 mA - B7

sensor_clkout SIF Bi-dir. 4 mA / 8 mA - B10

I2C

scl SIF Bi-dir. 4 mA / 8 mA - E10

sda SIF Bi-dir. 4 mA / 8 mA - D10

NAND

nand_wen NAND Bi-dir. 2 mA / 4 mA - R1

nand_ren NAND Bi-dir. 2 mA / 4 mA - T1

nand_cen[3] NAND Bi-dir. 2 mA / 4 mA PU K3

nand_cen[2] NAND Bi-dir. 2 mA / 4 mA PU T2

nand_cen[1] NAND Bi-dir. 2 mA / 4 mA PU R2

nand_cen[0] NAND Bi-dir. 2 mA / 4 mA PU P2

nand_ale NAND Bi-dir. 2 mA / 4 mA - L3

nand_cle NAND Bi-dir. 2 mA / 4 mA - M3

Packaging

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 173

nand_D[0] NAND Bi-dir. 2 mA / 4 mA - N3

nand_D[1] NAND Bi-dir. 2 mA / 4 mA - P3

nand_D[2] NAND Bi-dir. 2 mA / 4 mA - K4

nand_D[3] NAND Bi-dir. 2 mA / 4 mA - N4

nand_D[4] NAND Bi-dir. 2 mA / 4 mA - P4

nand_D[5] NAND Bi-dir. 2 mA / 4 mA - K5

nand_D[6] NAND Bi-dir. 2 mA / 4 mA - N5

nand_D[7] NAND Bi-dir. 2 mA / 4 mA - N6

wp_N NAND Input - -

DAC

DAC_comp DAC Analog I/O - L2

DAC_vref_out DAC Analog I/O - M1

DAC_rset DAC Analog I/O - M2

DAC_vref_in DAC Analog I/O - N2

DAC_io DAC Analog I/O - L1

Display Interface Port

dip_data[0] DIP Bi-dir. 4 mA / 8 mA PD K16

dip_data[1] DIP Bi-dir. 4 mA / 8 mA PU K15

dip_data[2] DIP Bi-dir. 4 mA / 8 mA PD K14

dip_data[3] DIP Bi-dir. 4 mA / 8 mA PD K13

dip_data[4] DIP Bi-dir. 4 mA / 8 mA PU J13

dip_data[5] DIP Bi-dir. 4 mA / 8 mA PD L16

dip_data[6] DIP Bi-dir. 4 mA / 8 mA PD L15

dip_data[7] DIP Bi-dir. 4 mA / 8 mA PD L14

dip_data[8] DIP Bi-dir. 4 mA / 8 mA PD L13

dip_data[9] DIP Bi-dir. 4 mA / 8 mA - M16

dip_data10] DIP Bi-dir. 4 mA / 8 mA - M15

dip_data[11] DIP Bi-dir. 4 mA / 8 mA - M14

dip_data[12] DIP Bi-dir. 4 mA / 8 mA - M13

dip_data[13] DIP Bi-dir. 4 mA / 8 mA - N16

dip_data[14] DIP Bi-dir. 4 mA / 8 mA - N15

dip_data[15] DIP Bi-dir. 4 mA / 8 mA - N14

Table 88. SCP220x Pinout

SCP220x ICP Family, Rev.2.1

Packaging

Freescale Semiconductor174

dip_data[16] DIP Bi-dir. 4 mA / 8 mA - N13

dip_data[17] DIP Bi-dir. 4 mA / 8 mA - P16

dip_data[18] DIP Bi-dir. 4 mA / 8 mA - P15

dip_data[19] DIP Bi-dir. 4 mA / 8 mA - R16

dip_data[20] DIP Bi-dir. 4 mA / 8 mA - R15

dip_data[21] DIP Bi-dir. 4 mA / 8 mA - T16

dip_data[22] DIP Bi-dir. 4 mA / 8 mA - T15

dip_data[23] DIP Bi-dir. 4 mA / 8 mA - T14

dip_RS DIP Output 4 mA / 8 mA - R14

dip_CSn0 DIP Output 4 mA / 8 mA PU R13

dip_CSn1 DIP Output 4 mA / 8 mA PU T13

dip_CSn2 DIP Bi-dir. 4 mA / 8 mA PU R12

dip_CSn3 DIP Bi-dir. 4 mA / 8 mA PU P12

dip_Wrn DIP Output 4 mA / 8 mA - N12

dip_OEn DIP Bi-dir. 4 mA / 8 mA - R11

dip_pclk DIP Bi-dir. 4 mA / 8 mA - N11

dip_cpu_vsync DIP Bi-dir. 4 mA / 8 mA - P11

UART

uart_Rx MISCIF Bi-dir. 2 mA / 4 mA - A2

uart_Tx MISCIF Bi-dir. 2 mA / 4 mA - B1

uart_cts MISCIF Bi-dir. 2 mA / 4 mA - B2

uart_rts MISCIF Bi-dir. 2 mA / 4 mA - C1

SPI

spi_Clk MISCIF Bi-dir. 2 mA / 4 mA - C2

spi_CS MISCIF Bi-dir. 2 mA / 4 mA PU C3

spi_Tx MISCIF Bi-dir. 2 mA / 4 mA - C4

spi_Rx MISCIF Bi-dir. 2 mA / 4 mA - C5

spi1_Clk MISCIF Bi-dir. 2 mA / 4 mA - D1

spi1_CS MISCIF Bi-dir. 2 mA / 4 mA PU D2

spi1_Tx MISCIF Bi-dir. 2 mA / 4 mA - D3

spi1_Rx MISCIF Bi-dir. 2 mA / 4 mA - D4

Media Storage

Table 88. SCP220x Pinout

Packaging

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 175

sd_clk SDMMC Bi-dir. 4 mA / 8 mA - F1

sd_cmd SDMMC Bi-dir. 4 mA / 8 mA - F2

sd_D[0] SDMMC Bi-dir. 4 mA / 8 mA - F3

sd_D[1] SDMMC Bi-dir. 4 mA / 8 mA - G1

sd_D[2] SDMMC Bi-dir. 4 mA / 8 mA - G2

sd_D[3] SDMMC Bi-dir. 4 mA / 8 mA - G3

Audio

audio_clkr AUDIO Bi-dir. 2 mA / 4 mA - P10

audio_clkx AUDIO Bi-dir. 2 mA / 4 mA - N10

audio_dr AUDIO Bi-dir. 2 mA / 4 mA - M10

audio_dx AUDIO Bi-dir. 2 mA / 4 mA - N9

audio_fsr AUDIO Bi-dir. 2 mA / 4 mA - M9

audio_fsx AUDIO Bi-dir. 2 mA / 4 mA - N8

mclk AUDIO Bi-dir. 2 mA / 4 mA - M8

MP2TS

mp2ts_clk MISCIF Input n.a. E1

mp2ts_valid MISCIF Input n.a. E2

mp2ts_sync MISCIF Input n.a. E3

mp2ts_data MISCIF Input n.a. E4

USB

usb_phy_id USB USB PAD n.a. J5

usb_phy_vbus USB USB PAD n.a. J4

usb_phy_Plus USB USB PAD n.a. K1

usb_phy_Minus USB USB PAD n.a. J1

usb_phy_res USB USB PAD n.a. J3

utmiotg_drvvbus AUDIO Bi-dir. 4 mA / 8 mA PU R10

Smart Card

sc_io SCCARD Bi-dir. 4 mA / 8 mA - H1

sc_card_detect SCCARD Bi-dir. 4 mA / 8 mA - H2

sc_card_voltage SCCARD Bi-dir. 4 mA / 8 mA - H3

sc_fcb SCCARD Bi-dir. 4 mA / 8 mA - H4

sc_clk SCCARD Bi-dir. 4 mA / 8 mA PU H5

Table 88. SCP220x Pinout

SCP220x ICP Family, Rev.2.1

Packaging

Freescale Semiconductor176

sc_power_on SCCARD Bi-dir. 4 mA / 8 mA - H6

sc_rst SCCARD Bi-dir. 4 mA / 8 mA - J6

SDRAM

DMCLK SDRAM Output 4 mA / 8 mA - -

DMCLKn SDRAM Output 4 mA / 8 mA - -

A[0] SDRAM Output 4 mA / 8 mA - -

A[1] SDRAM Output 4 mA / 8 mA - -

A[2] SDRAM Output 4 mA / 8 mA - -

A[3] SDRAM Output 4 mA / 8 mA - -

A[4] SDRAM Output. 4 mA / 8 mA - -

A[5] SDRAM Output 4 mA / 8 mA - -

A[6] SDRAM Output 4 mA / 8 mA - -

A[7] SDRAM Output 4 mA / 8 mA - -

A[8] SDRAM Output 4 mA / 8 mA - -

A[9] SDRAM Output 4 mA / 8 mA - -

A[10] SDRAM Output 4 mA / 8 mA - -

A[11] SDRAM Output 4 mA / 8 mA - -

A[12] SDRAM Output 4 mA / 8 mA - -

CKE SDRAM Output. 4 mA / 8 mA - -

WEn SDRAM Output 4 mA / 8 mA - -

CASn SDRAM Output 4 mA / 8 mA - -

RASn SDRAM Output 4 mA / 8 mA - -

CSn SDRAM Output 4 mA / 8 mA - -

BA[0] SDRAM Output 4 mA / 8 mA - -

BA[1] SDRAM Output 4 mA / 8 mA - -

DM[0] SDRAM Output 4 mA / 8 mA - -

DM[1] SDRAM Output 4 mA / 8 mA - -

DM[2] SDRAM Output 4 mA / 8 mA - -

DM[3] SDRAM Output 4 mA / 8 mA - -

DQS[0] SDRAM Bi-dir. 4 mA / 8 mA - -

DQS[1] SDRAM Bi-dir. 4 mA / 8 mA - -

DQS[2] SDRAM Bi-dir. 4 mA / 8 mA - -

Table 88. SCP220x Pinout

Packaging

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 177

DQS[3] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[0] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[1] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[2] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[3] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[4] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[5] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[6] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[7] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[8] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[9] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[10] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[11] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[12] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[13] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[14] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[15] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[16] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[17] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[18] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[19] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[20] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[21] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[22] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[23] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[24] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[25] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[26] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[27] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[28] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[29] SDRAM Bi-dir. 4 mA / 8 mA - -

DQ[30] SDRAM Bi-dir. 4 mA / 8 mA - -

Table 88. SCP220x Pinout

SCP220x ICP Family, Rev.2.1

Packaging

Freescale Semiconductor178

DQ[31] SDRAM Bi-dir. 4 mA / 8 mA - -

System Signals & JTAG

Clkin OSC Oscillator pad n.a. H16

Clkout OSC Oscillator pad n.a. J16

resetN HPI Input -H11

hw_deep_secure DIP Input - P13

rtck MISCIF Output 4 mA / 8 mA - A3

tck MISCIF Input PU A4

Ntrst MISCIF Input PD B5

tdi MISCIF Input PU B6

tdo MISCIF Output 4 mA / 8 mA - B3

tms MISCIF Input PU B4

testmode MISCIF Input PD A1

bootmode (1) DIP Input - P14

pkg_opt0 (2) SDRAM Input - -

pkg_opt1 (2) SDRAM Input - -

pkg_opt2 (2) SDRAM Input - -

jtag_sel_p0 (2) MISCIF Input - -

jtag_sel_p1 (2) MISCIF Input - -

jtag_sel_p2 (2) MISCIF Input - -

No Connects

Table 88. SCP220x Pinout

Packaging

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 179

NC - - - A5, A6, A7,

A8, A9,

A10, A11,

A12, A13,

A14, A15,

M7, N7, P5,

P6, P7, P8,

P9, R4, R5,

R6, R7, R8,

R9, T3, T4,

T5, T6, T7,

T8, T9, T10,

T11, T12,

A16, B16,

B15, B14,

B12, C16,

B13, C13,

D16, D15,

D14, D13,

E16, E15,

E14

Reserved Pins

reserved_1 HPI Bi-dir. 2 mA / 4 mA - C14

reserved_2 HPI Bi-dir. 2 mA / 4 mA PD C15

reserved_3 HPI Bi-dir. 2 mA / 4 mA - G11

reserved_4 HPI Bi-dir. 2 mA / 4 mA - H13

reserved_5 HPI Bi-dir. 2 mA / 4 mA - G12

reserved_6 HPI Bi-dir. 2 mA / 4 mA - H12

reserved_7 HPI Bi-dir. 4 mA / 8 mA - G14

reserved_8 HPI Bi-dir. 4 mA / 8 mA - G15

reserved_9 HPI Bi-dir. 4 mA / 8 mA - G16

reserved_10 HPI Bi-dir. 4 mA / 8 mA - F13

reserved_11 HPI Bi-dir. 4 mA / 8 mA - F14

reserved_12 HPI Bi-dir. 4 mA / 8 mA - F15

reserved_13 HPI Bi-dir. 4 mA / 8 mA - F16

reserved_14 HPI Bi-dir. 4 mA / 8 mA - E13

reserved_15 HPI Bi-dir. 2 mA / 4 mA - G13

reserved_16 NAND Input - -

reserved_17 DIP Bi-dir. 4 mA / 8 mA - -

reserved_18 DIP Bi-dir. 4 mA / 8 mA - -

reserved_19 NAND Bi-dir. 2 mA / 4 mA PU -

Table 88. SCP220x Pinout

SCP220x ICP Family, Rev.2.1

Packaging

Freescale Semiconductor180

reserved_20 NAND Bi-dir. 2 mA / 4 mA PU -

reserved_21 NAND Bi-dir. 2 mA / 4 mA PU -

reserved_22 NAND Bi-dir. 2 mA / 4 mA PU -

reserved_23 DIP Bi-dir. 4 mA / 8 mA - -

reserved_24 DIP Bi-dir. 4 mA / 8 mA - -

reserved_25 NAND Bi-dir. 2 mA / 4 mA - -

reserved_26 DIP Bi-dir. 4 mA / 8 mA - -

reserved_27 DIP Bi-dir. 4 mA / 8 mA - -

reserved_28 DIP Bi-dir. 4 mA / 8 mA - -

reserved_29 DIP Bi-dir. 4 mA / 8 mA - -

Notes:

(1) Must be pulled-up to VDD_DIP (100 KOhms 1/16 W 5% suggested) for correct operation on SCP2201

and SCP2207.

(2) Software queries the SCP2207 pkg_opt[2:0] and jtag_sel_p[2:0] pins to determine the SDRAM used

in the system. Currently CogniVue supports a 128 MB Micron mobile DDR SDRAM, and the pkg_opt[2:0]

and jtag_sel_p[2:0] must both be set to binary ‘101’ (decimal value 5). Consult the factory for interfacing

to any other memory.

Table 89. SCP220x Power Pin

Power Pin Name Description SCP2201 and

SCP2207

Ball #

VDD_CORE Core supply G8, G9, H8, H9

VDD_LP Low-power audio/video supply J7, J10, K11, K12

VDDA_PLL Anal og PLL supply J14

VSSA_PLL Return for PLL VDD

(DO NOT CONNECT TO GROUND)

H14

VDD_SDRAM SDRAM core and EBI/SDRAM IO supply F7,L7

VDD_OSC Analog supply for crystal pad J15

VDD_USB A nalog supply for USB K2

VDDL_USB USB core supply -

VDDA_DAC Analog supply for internal DAC P1

VDD_SENSOR Sensor Interface (SIF) and I2C IO supply F10

VDD_GPIO GPIO and keyscan supply D12

Table 88. SCP220x Pinout

Electrical Specifications

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 181

7 Electrical Specifications

7.1 Absolute Maximum Rating

The following table describes the absolute maximum ratings for the SCP220x.

VDD_DIP DIP IO supply L10

VDD_MISCIF MP2TS, JTAG, SPI, UART IO supply D5

VDD_SDMMC SD/MMC IO supply F4

VDD_AUDIO Audio IO supply K9

VDD_SCCARD Smart Card power supply G5

VDD_NAND NAND Flash IO supply L4

VSS Common ground C11, C12, D6, D11,

F8, F9, G4, G6, H7,

H10, J8, J9, J11,

J12, K6, K8, L8, L9,

M4, R3

VSS_DAC Analog ground for internal DAC N1

VSS_USB Analog ground for USB J2

VSSL_USB USB core ground -

VSS_OSC Analog ground for crystal pad H15

Table 90. SCP220x Absolute Maximum Rating

Item Rating Unit

I/O supply voltage -0.2 to +3.3 V

Core supply voltage -0.2 to +1.2 V

Input voltage for a signal pin -0.3 to +3.3 V

Storage temperature -40 to +150 °C

Short circuit duration (single output in high state to GND) 1 second

Table 89. SCP220x Power Pin

SCP220x ICP Family, Rev.2.1

Electrical Specifications

Freescale Semiconductor182

7.2 Recommended Operating Ranges

The following table describes the recommended operating ranges for the SCP220x. Note that IO_VDD refers to the

subset of power supplies for the device I/Os as specified in Ta bl e 89 . These supplies must be powered up before

VDD_CORE is powered up.

7.3 Thermal Characteristics

Table 91. SCP220x Recommended Operating Range

Item Symbol Min. Typ. Max. Unit

Core supply voltage

Low power voltage

VDD_CORE

VDD_LP

0.9 1.0 1.1 V

I/O Supply Voltage IO_VDD 2.7 3.0 3.3 V

Sensor Interface (SIF) VDD_SENSOR 2.7 3.0 3.3 V

1.71 1.8 1.98 V

Analog PLL supply VDDA_PLL 2.7 3.0 3.3 V

SDRAM memory supply VDD_SDRAM 1.7 1.8 1.98 V

Analog supply for USB VDD_USB 3.0 3.3 3.6 V

Analog supply for internal DAC VDDA_DAC 2.97 3.3 3.63 V

Operating temperature Toperating

(Industrial

Qualified Parts)

-40 105 °C

Notes:

1. IO_VDD = VDD_GPIO, VDD_DIP, VDD_AUDIO, VDD_NAND, VDD_SENSOR, VDD_SDMMC, VDD_MISCIF,

VDD_SCCARD, VDD_OSC

2.Sensor Interface supply (VDD_SENSOR) shall be part of the IO_VDD group when powered at 3.0V.

3.IO_VDD must always be on.

4. VDDA_PLL, VDD_LP must always be on.

5. VDD_DAC and VDD_USB must be turned on/off when VDD_CORE supply is turned on/off.

Table 92. SCP220x Thermal Characteristics

Air Velocity (m/s) JA JB JC

0 25.5 °C/W 19.9 °C/W 8.5 °C/W



Electrical Specifications

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 183

7.4 DC Characteristics

The following table describes the DC characteristics of the SCP220x.

The following table describes the typical and maximum current consumption of the SCP220x.

Table 93. SCP220x DC Characteristics

Item Symbol Min. Typ. Max. Unit

Input Voltage, high VIH 3.0 2 3.3 V

Input Voltage, low VIL 3.0 -0.3 0.8 V

Input Voltage, high (VDD_SENSOR at 1.8V) VIH 1.8 1.17 1.98 V

Input Voltage, low (VDD_SENSOR at 1.8V) VIL 1.8 -0.3 0.63 V

Sensor Voltage, high (VDD_SENSOR at 3.0V) VIH 3.0 2.7 3.0 3.3 V

Sensor Voltage, low (VDD_SENSOR at 3.0V) VIL 3.0 1.71 1.8 1.98 V

Output Voltage, high VOH IO_VDD* 0.8 V

Output Voltage, low VOL 0.4 V

Output Current High (VDD=3.0V) IOH_2ma 2.2 6.1 11.9 mA

IOH_4ma 5.1 14.4 27.8 mA

IOH_8ma 7.3 20.5 39.6 mA

Output Current Low (VDD=3.0V) IOL_2ma 2.8 5 7.8 mA

IOL_4ma 5.6 9.5 15.5 mA

IOL_8ma 8.4 15 23.5 mA

Input Capacitance CI4pF

Table 94. SCP220x Power Consumption

Description Supply Typ. (25°C) Max. (105°C) Unit

Core supply voltage + Low power voltage VDD_CORE +

VDD_LP

300 520 mA

I/O Supply IO_VDD118 30 mA

Analog PLL supply VDDA_PLL 9 20 mA

SDRAM memory supply VDD_SDRAM 2221803mA

Analog supply for USB VDD_USB 6 disabled

8 enabled

11 disabled

17 enabled

Analog supply for internal DAC (TVOut) VDDA_DAC 0.6 disabled

39 enabled

1.0 disabled

55 enabled

SCP220x ICP Family, Rev.2.1

Electrical Specifications

Freescale Semiconductor184

Notes:

1. IO_VDD is a combined total reading of VDD_GPIO, VDD_DIP, VDD_AUDIO, VDD_NAND, VDD_SENSOR, VDD_SDMMC,

VDD_MISCIF, VDD_SCCARD, VDD_OSC measured at 3.0 V, with no IO activity

2. Measured with an application dewarping a VGA image utilizing a 180° field of view lens.

3. Condition where SDRAM is continuously burst written or read.

Table 94. SCP220x Power Consumption

Revision History

SCP220x ICP Family, Rev.2.1

Freescale Semiconductor 185

8 Revision History

Revision Details of Change Date

1 Initial Release 04/2014

2In Section 1.2.7, POWER Supply

• “1.0V core...I/O” changed to “1.8V...I/O Power.

In Table 2 (SCP220x Power Supply), Added one row for Pin name

VDD_SENSOR.

In Table 11 (Sensor Interface Timing), Added rows for symbol t6(1.8V)

and t7(1.8V).

In Table 91 (SCP220x Recommended Operating Range), Added row

for item Sensor Interface (1.8V) and also updated footnote 2.

In Table 93 (SCP220x DC Characteristics), Added two for item Input

Voltage, high (SIF 1.8V) and Input Voltage, low (SIF 1.8V).

03/2015

2.1 • Editorial Changes

• Table Caption moved to top for all tables.

06/2015

Document Number: SCP220x

Rev.2.1

06/2015

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