SMSC USB332x PRODUCT PREVIEW Revision 0.4 (06-27-08)
Data Brief
PRODUCT FEATURES
USB332x
Industry’s Smallest Hi-Speed
USB Transceiver with 1.8V
ULPI Interface
Integrated ESD protection circuits
— Up to ±15kV IEC Air Discharge without external
devices
Over-Voltage Protection circuit (OVP) protects the
VBUS pin from continuous DC voltages up to 30V
Integrated USB Switch
— No degradation of Hi-Speed electrical
characteristics
— Allows single USB port of connection by
providing switching function for:
– Battery charging
– Stereo and mono/mic audio
– USB Full-Speed/Low-Speed data
flexPWRTM Technology
— Low current design ideal for battery powered
applications
— “Sleep” mode tri-states all ULPI pins and places
the part in a low current state
— 1.8V IO Voltage (±10%)
Integrated battery to 3.3V LDO regulator
— 2.2uF bypass capacitor
— 100mV dropout voltage
“Wrapper-less” design for optimal timing performance
and design ease
— Low Latency Hi-Speed Receiver (43 Hi-Speed
clocks Max) allows use of legacy UTMI Links with
a ULPI bridge
External Reference Clock operation
— 0 to 3.6V input drive tolerant
— Able to accept “noisy” clock sources as reference
to internal, low-jitter PLL
— Frequencies: 12, 13, 19.2, 24, 26, 27, 38.4, 52 or
60MHz
Smart detection circuits allow identification of USB
charger, headset, or data cable insertion
Includes full support for the optional On-The-Go
(OTG) protocol detailed in the On-The-Go
Supplement Revision 1.3 specification
Supports the OTG Host Negotiation Protocol (HNP)
and Session Request Protocol (SRP)
UART mode for non-USB serial data transfers
Internal 5V cable short-circuit protection of ID, DP
and DM lines to VBUS or ground
Industrial Operating Temperature -40°C to +85°C
25 ball WLCSP lead-free RoHS compliant package;
(1.95 x 1.95 x 0.53mm height)
Applications
The USB332x is targeted for any application wh ere a Hi-
Speed USB connection is desired and when board
space, power, and interface pins must be minimized.
The USB332x is well suited for:
Cell Phones
PDAs
MP3 Players
GPS Personal Navigation Devices
Datacards
Scanners
External Hard Drives
Digital Still and Video Cameras
Portable Media Players
Entertainment Devices
Printers
HDTVs
Set Top Boxes/DVR/PVR
Video Record/Playback Systems
IP and Video Phones
Gaming Consoles
POS Terminals
Note 1 All versions support ULPI Clock In Mode (60MHz input at REFCLK).
ORDER NUMBER
REFCLK
FREQUENCY
(Note 1) PACKAGE TYPE REEL SIZE
USB3321C-GL-TR 26MHz
25 Ball, WLCSP Lead-Free RoHS
Compliant Package (tape and reel) 3000 pieces
USB3322C-GL-TR 12MHz
USB3324C-GL-TR 52MHz
USB3325C-GL-TR 24MHz
USB3326C-GL-TR 19.2MHz
USB3327C-GL-TR 27MHz
USB3328C-GL-TR 38.4MHz
USB3329C-GL-TR 13MHz
Industry’s Smallest Hi-Speed USB Transceiver with 1.8V ULPI Interface
Revision 0.4 (06-27-08) 2 SMSC USB332x
PRODUCT PREVIEW
80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123
Copyright © 2008 SMSC or its subsidiaries. All rights reserved.
Circuit diagrams and other informa tion relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for
construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no resp onsibility is assume d for inaccura cies. SMSC
reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications
before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent
rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated
version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors
known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not
designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to person al injury or severe property
damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of
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ORDER NUMBER(S):
Industry’ s Sm al lest Hi - Speed USB T r an scei ve r with 1.8V ULPI Interface
SMSC USB332x 3 Revision 0.4 (06-27-08)
PRODUCT PREVIEW
General Description
SMSC’s USB332x is a family of Hi-Speed USB 2.0 Transceivers that provides a physical layer (PHY)
solution well-suited for portable electronic devices. Both commercial and industrial temperature
applications are supported.
Each model in the USB332x family may use a 60MHz reference clock, or the model-number specific
reference clock shown in ORDER NUMBER(S): on page 2.
Several advanced features make the USB332x the transceiver of choice by reducing both electrical
bill of material (eBOM) part count and printed circuit board (PCB) area. Outstanding ESD robustness
eliminates the need for external ESD protection devices in typical applications. The internal Over-
Voltage Protection circuit (OVP) protects the USB332x from voltages up to 30V. By using a reference
clock from the Link, the USB332x removes the cost of a dedicated crystal reference from the design.
And the integrated USB switch enables unique product features with a single USB port of connection.
The USB332x meets all of the elec trical requirements to be used as a Hi-Speed USB Host, Device, or
an On-the-Go (OTG) transceiver. In addition to the supporting USB signaling, the USB332x also
provides USB UART mode and USB Audio mode.
USB332x uses the industry standard UTMI+ Low Pin Interface (ULPI) to connect the USB PHY to the
Link. ULPI uses a method of in-band sig naling and status byte transfers between the Link and PHY to
facilitate a USB session with only 12 pins.
The USB332x uses SMSC’s “wrapper-less” technology to implement the UL PI interface. This “wrapper-
less” technology allows the PHY to achieve a low latency transmit and receive time. SMSC’s low
latency transceiver allows an existing UTMI Link to be reused by adding a UTMI to ULPI bridge. By
adding a bridge to the ASIC the existing and proven UTMI Link IP can be reused.
Figure 1 USB332x Block Diagram
OTG
USB
DP/DM
Switch
Hi-Speed
USB
Transceiver
ULPI
Interface
ULPI
Registers
and State
Machine
BIAS
Low Jitter
Integrated
PLL
Integrated
Power
Management
VBUS
ID
DP
DM
RBIAS
ESD Protection
SPK_L
SPK_R
REFCLK
DATA[7:0]
RESETB
VDD18
VDD33
VBAT
DIR
NXT
STP
CLKOUT
OVP
Industry’s Smallest Hi-Speed USB Transceiver with 1.8V ULPI Interface
Revision 0.4 (06-27-08) 4 SMSC USB332x
PRODUCT PREVIEW
The USB332x includes an integrated 3.3V LDO regul ator that may optiona lly be used to gene rate 3.3V
from power applied at the VBAT pin. The voltage on the VBAT pin can range from 3.1 to 5.5V. The
regulator dropout voltage is less than 100mV which allows the PHY to continue USB signaling when
the voltage on VBAT drops to 3.1V. The USB transceiver will continue to operate at lower voltages,
although some parameters may be outside the limits of the USB specifications. If the user would like
to provide a 3.3V supply to the USB332x, the VBAT and VDD33 pins should be connected together.
The USB332x also includes integrated pull-up resistors that can be used for detecting the attachment
of a USB Charger. By sensing the attachment to a USB Charger, a product using the USB332x can
charge its battery at more than the 500mA allowed when charging from a USB Host.
In USB UART mode, the USB332x DP and DM pins are redefined to enable pass-through of
asynchronous serial data. The USB332x can only enter UART mode when the user programs the part
into this mode.
In USB audio mode, a switch conn ects the DP pin to the SPK_R pin , and another switch connects he
DM pin to the SPK_L pin. The USB332x can be configured to enter USB audio mode. In addition,
these switches are on when the RESETB pin of the USB332x is asserted. The USB audio mode
enables audio signalling from a single USB port of connection, and the switches may also be used to
connect Full Speed USB from another PHY onto the USB cable.
Industry’ s Sm al lest Hi - Speed USB T r an scei ve r with 1.8V ULPI Interface
SMSC USB332x 5 Revision 0.4 (06-27-08)
PRODUCT PREVIEW
USB332x Pin Locations and Descriptions
Package Diagram with Ball Locations
The illustration below is viewed from the top of the package.
Ball Definitions
The following table details the ball definitions for the figure above.
Figure 2 USB332x Ball Locations - Top View
Table 1 USB332x Pin Description
BALL NAME DIRECTION/
TYPE ACTIVE
LEVEL DESCRIPTION
B1 ID Input,
Analog N/A ID pin of the USB cable. For application s
not using ID this pin can be conne cted to
VDD33. For an A-Device ID is grounded .
For a B-Device ID is floated.
C2 VBUS I/O,
Analog N/A This pin connects to an external resistor
(RVBUS) connected to the VBUS pin of
the USB cable. This pin is used for the
VBUS comparator inputs and for VBUS
pulsing during session request protocol.
C1 VBAT Power N/A Regulator input. The regulator supply can
be from 5.5V to 3.1V.
A
E
D
C
B
15432
TOP VIEW
RESETBID
VBUSVBAT
VDD33DM
DP SPK_R SPK_L
DATA[7] DATA[4]
DATA[6] DATA[5]
CLKOUT
DATA[3]
DATA[2] DATA[1]
DATA[0] NXT
DIRSTP
VDD18
REFCLKRBIAS
GND
Industry’s Smallest Hi-Speed USB Transceiver with 1.8V ULPI Interface
Revision 0.4 (06-27-08) 6 SMSC USB332x
PRODUCT PREVIEW
D2 VDD33 Power N/A 3.3V Regulator Output. A 2.2uF (<1 o hm
ESR) bypass capacitor to ground is
required for regulator stability. The
bypass capacitor should be placed as
close as possible to the USB332x.
D1 DM I/O,
Analog N/A D- pin of the USB cable.
E1 DP I/O,
Analog N/A D+ pin of the USB cable.
E2 SPK_R I/O,
Analog N/A USB switch in/out for DP signals
E3 SPK_L I/O,
Analog N/A USB switch in/out for DM signals
D3 DATA[7] I/O,
CMOS N/A ULPI bi-directional data bus. DATA[7] is
the MSB.
E4 DATA[6] I/O,
CMOS N/A ULPI bi-directional data bus.
E5 DATA[5] I/O,
CMOS N/A ULPI bi-directional data bus.
D4 DATA[4] I/O,
CMOS N/A ULPI bi-directional data bus.
A5 CLKOUT Output,
CMOS N/A ULPI Clock Out Mode:
60MHz ULPI clock output. All ULPI
signals are driven synchronous to the
rising edge of this clock.
ULPI Clock In Mode:
This pin is connected to VDD18 to
configure 60MHz ULPI Clock IN mode.
D5 DATA[3] I/O,
CMOS N/A ULPI bi-directional data bus.
C4 DATA[2] I/O,
CMOS N/A ULPI bi-directional data bus.
C5 DATA[1] I/O,
CMOS N/A ULPI bi-directional data bus.
B4 DATA[0] I/O,
CMOS N/A ULPI bi-directional data bus. DATA[0] is
the LSB.
B5 NXT Output,
CMOS High The PHY asserts NXT to throttle the data.
When the Link is sending data to the
PHY, NXT indicates when the current
byte has been accepted by the PHY. The
Link places the next byte on the data bus
in the following clock cycle.
A4 DIR Output,
CMOS N/A Controls the direction of the data bus.
When the PHY has data to transfer to the
Link, it drives DIR high to take ownership
of the bus. When the PHY has no data to
transfer it drives DIR low and monitors
the bus for commands from the Link.
Table 1 USB332x Pin Description (continued)
BALL NAME DIRECTION/
TYPE ACTIVE
LEVEL DESCRIPTION
Industry’ s Sm al lest Hi - Speed USB T r an scei ve r with 1.8V ULPI Interface
SMSC USB332x 7 Revision 0.4 (06-27-08)
PRODUCT PREVIEW
A3 STP Input,
CMOS High The Link asserts STP for one clock cycle
to stop the data stream currently on the
bus. If the Link is sending data to the
PHY, STP indicates the last byte of data
was on the bus in the previous cycle.
B3 VDD18 Power N/A External 1.8V Supply input pin. Th is pad
needs to be bypassed with a 0.1uF
capacitor to ground, placed as close as
possible to the USB332x.
B2 RESETB Input,
CMOS, Low When low, the part is suspen ded with all
ULPI outputs tri-stated. When high, the
USB332x will operate as a normal ULPI
device. The state of this pin may be
changed asynchronously to the clock
signals. When asserted for a minimum of
1 microsecond and then de-asserted, the
ULPI registers are reset to their default
state and all internal state machines are
reset.
A2 REFCLK Input,
CMOS N/A ULPI Clock Out Mode:
Model-specific reference clock.
See ORDER NUMBER(S): on page 2.
ULPI Clock In Mode:
60MHz ULPI clock input.
A1 RBIAS Analog,
CMOS N/A Bias Resistor pin. This pin requires an
8.06kΩ (±1%) resistor to ground, placed
as close as possible to the USB332x.
Nominal voltage during ULPI operation is
0.8V.
C3 GND Ground N/A Ground.
Table 1 USB332x Pin Description (continued)
BALL NAME DIRECTION/
TYPE ACTIVE
LEVEL DESCRIPTION
Industry’s Smallest Hi-Speed USB Transceiver with 1.8V ULPI Interface
Revision 0.4 (06-27-08) 8 SMSC USB332x
PRODUCT PREVIEW
Application Diagrams
Figure 3 USB332x WLCSP Application Diagram (Device configured for ULPI Clock Out mode)
3.1-5.5V
Supply
RVBUS must be installed to
enable o vervoltage
protection of the VBUS pin.
CDC_BLOCK
The capacitor CVBUS
must be installed on
this side of RVBUS.
ULPI Clock
Out Mode
Link Controller
DIR
NXT
STP
CLKIN
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA0
DATA1
RESETB
REFCLK
USB
Receptacle
DM
DP
VBUS
SHIELD
GND RBIAS
USB332X
DIR
NXT
STP
CLKOUT
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA0
DATA1
D3
E4
E5
D4
D5
C4
C5
B4
A3
B5
A4
A5
REFCLK A2
RESETB B2
VBUS
C2
VBAT
C1
VDD33
D2
ID
B1
DM
DP
D1
E1
SPK_L
SPK_R
E2
E3
GND
C3
A1
RBIAS
VDD18 B3
Optional
Switched Signal
to DP/DM
1.8V Supply
CBYP
COUT
CBYP
RVBUS
CVBUS
Industry’ s Sm al lest Hi - Speed USB T r an scei ve r with 1.8V ULPI Interface
SMSC USB332x 9 Revision 0.4 (06-27-08)
PRODUCT PREVIEW
Figure 4 USB332x WLCSP Application Diagram (Host or OTG configured for ULPI Clock In mode)
VBUS
Switch
OUT
EN
IN
5V
USB332X
DIR
NXT
STP
CLKOUT
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA0
DATA1
D3
E4
E5
D4
D5
C4
C5
B4
A3
B5
A4
A5
REFCLK A2
RESETB B2
VBUS
C2
VBAT
C1
VDD33
D2
ID
B1
DM
DP
D1
E1
SPK_L
SPK_R
E2
E3
GND
C3
A1
RBIAS
VDD18 B3
Optional
Switched Signal
to DP/DM
1.8V Supply
CBYP
USB
Receptacle
DM
DP
ID
SHIELD
GND
VBUS COUT
3.1-5.5V
Supply
CBYP
RVBUS
ULPI Clock
In Mode
Link Control ler
DIR
NXT
STP
CLKOUT
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA0
DATA1
RESETB
The capacitor CVBUS
must be installed on
this side of RVBUS.
CVBUS
RVBUS must be
installed t o enable
overvoltage
protection of the
VBUS pin.
CPEN
SMSC USB332x 10 Revision 0.4 (06-27-08)
PRODUCT PREVIEW
Industry’s Smallest Hi-Speed USB Transceiver with 1.8V ULPI Interface
Package Outline
Figure 5 25WLCSP, 1.95x1.95mm Body, 0.4mm Pitch
