Imaging Solutions
Interactive Display Appliances
CX92745 Interactive Display, Media, and Image
Processor
Conexant’s CX92745 System-on-Chip (SoC)
is an integrated display, media, and image
processor delivering a new level of performance
and system integration. The SoC builds on
Conexant’s strengths in image and mixed-signal
processing, and integrates high performance
1080p video and graphics processing hardware.
To support robust system design and lower
Bill of Material (BOM) costs, the CX92745
also integrates a stereo Class-D amplifier,
microphone input, touchscreen controller, and
power supply controller.
The hardware video subsystem supports 1080p
decode and video post processing for popular
video codecs, including H.264, and offloads
the CPU from video decode tasks. Along with
video decode, the CX92745 supports a BT.656
compatible video-in port for video capture and
docking applications.
For advanced GUI operations, the CX92745
supports a hardware graphics processing
unit (GPU). This GPU includes a Display List
Processor along with Alpha Blend and Clipping
Units to support complex, independent UI
operations. The CX92745 features a flexible,
programmable LCD interface, hardware JPEG
codec, and Conexant’s advanced Image
Processing pipeline. The CX92745 display sub-
system further integrates an LVDS transmitter
Complete Multimedia Solution on a Single Chip
and high-speed triple video DACs to support a
wide range of display applications.
Network connectivity including Bluetooth®, 3G,
WiFi®, and integrated Ethernet is supported.
The integrated camera card controller supports
all popular memory cards, and an advanced
NAND Flash Controller supports NAND boot
and extended MLC-NAND ECC control.
A high-performance ARM RISC processor
supports robust embedded operating system
and application design. High-speed USB
2.0 Host and Device ports support PC and
peripheral connection. Enhanced multimedia
and graphics processing is further supported
with the CX92745’s ARM Vector Floating Point
Unit (VFP), large internal caches, and high
speed DDR2 memory.
The CX92745 contains several features which
lower cost and operating power while providing
unsurpassed image processing and flexibility.
Conexant’s industry-standard development
environment enables manufacturers to quickly
design cost-effective interactive display
products.
The SoC is packaged in an environmentally-
friendly, RoHS/Green-compliant 400-pin fine-
pitch ball grid array (fpBGA).
Part Number CX92745
Description Interactive Display, Media,
and Image Processor
ARM microprocessor with Vector Floating
Point Unit, MMU
Hardware 1080p MPEG2 / MPEG4 / H.263 /
H.264 Video Decoder & BT.656 Video-in
Port
Hardware graphics processor with Display
List Processor and Alpha Blend Unit
Flexible high-performance image processing
pipeline and JPEG codec
Hardware touchscreen controller for
advanced capacitive touchscreens
Advanced MLC NAND Flash Controller with
robust ECC and NAND boot capability
Integrated Class-D stereo DAC, stereo
microphone, and on-chip Power Supply
Controller
Flexible LCD Controller with integrated
video DACs, LVDS transmitter
Easily handles complex computational,
geometry, and system tasks
Hardware acceleration to speed up
decoding/displaying common video formats
and profiles
Supports advanced independent UI
operations and display effects
Quickly provides superior photo rendering
and multimedia processing
Low cost touchscreen implementation with
proven drivers
Provides extended internal memory storage
System BOM savings
Directly interfaces to analog and digital
LCD’s, LVDS LCD’s, analog monitors, and
HDMI controllers
Key Features Benefits
Applications
• Connected Digital Frames
• Interactive Kiosks
• Home Automation/Security
• Digital Signage
• Interactive TV Appliance
• Home Web Terminals
© 2010 Conexant Systems, Inc. All Rights Reserved. Conexant and the Conexant
logo are registered trademarks of Conexant Systems, Inc. All other trademarks
are owned by their respective owners. Although Conexant strives for accuracy
in all its publications, this material may contain errors or omissions and is
subject to change without notice. THIS MATERIAL IS PROVIDED AS IS AND WITHOUT
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NON-INFRINGEMENT. Conexant shall not be liable for any
special, indirect, incidental or consequential damages as a result of its use.
10-2919
Imaging Solutions
Interactive Display Appliances
www.conexant.com
General Information:
U.S. and Canada: (888) 855-4562
International: 1+ (949) 483-3000
Headquarters
4000 MacArthur Blvd.
Newport Beach, CA 92660
Doc# PBR--202541
Conexant Product Portfolio
Conexant’s comprehensive product portfolio includes solutions for imaging, audio, video surveillance, and embedded modem applications.
CX92745 Features
Processor
• ARM RISC microprocessor and Memory
Management Unit (MMU)
• ARM Vector Floating Point Unit and Java Byte-
Code Acceleration
• 600MHz DDR2 Memory Subsystem - up to
1GB support
External Memory Support
• DDR2 Memory Subsystem - up to 1GB
support
• Serial Flash
• MLC NAND Flash Controller / NAND boot /
extended ECC
• SD card / SDIO expansion port
• Embedded Memory Card Controller (CF, xD,
MS, MS-Pro, SD/SDHC, MMC)
Connectivity/Interfaces
• Integrated Ethernet MAC
• USB 2.0 high-speed device and USB hosts (2)
• Additional high-speed and expansion ports for
peripheral integration
• SPI, I2C, SSP (Synchronous Serial Port),
supporting SDcard, and SDIO
• SPI / UART modem interface to Conexant
modem solutions
Video and Image Processor
• Hardware 1080p MPEG2 / H.263 / MPEG4 /
H.264 Decoder, including up to Advanced
Profile MPEG4, and Main Profile H.264
• Hardware Video Post Processor with Scaling,
Rotation, Color Operations
• Hardware JPEG codec, unlimited JPEG size
support
• Programmable, Pipelined Image Processor
- Color Space/Image Filter/Error Diffusion
- Adjustable Color Tables, Tonal Response
Curve (TRC), filters to enable unique display
features
Graphics Processing Unit (GPU)
• Programmable Display List Processor
• Linear to X,Y memory addressing
• Multi-operand BLT, Line engine with
Transparency and Blending
• Alpha Blending and Region Clipping
• Two-operand BitBLT, Line, Stipple, Fill
Operations with Transparency
Display Support
• TFT LCD (Digital RGB) up to 24bits / pixel
• Hardware Overlay support
• High-speed triple 8-bit Video DACs and
Analog TCON
CX92745 Block Diagram
• Integrated LVDS transmitter
• Integrated Capacitive Touchscreen Controller
• GPIO support for buttons, LED’s, sensors, etc.
Audio and Power Supply Controllers
• 1.2W stereo Class-D amplifier with EQ, noise
reduction, stereo microphone input, line-out
• On-chip Power Supply Controller, including
buck and boost regulators, and LCD VGh / VGl
generation
• I2S interface for audio codec expansion
Timers
• Real-time clock with battery backup
A/D and PWM Control
• Multi-channel 10-bit A/D
• Pulse width modulators (PWMs) with firmware
control
Package
• 400-pin fpBGA package - RoHS/Green
compliant
Development Environment
• Linux BSP Development Environment
• JTAG In-Circuit Emulator
• Conexant EVK and Reference Designs
Hardware Image
Processing Accelators
Parallel JPEG Decode/ Encode
Zoom and Arbitary Scale
Color Space Conversion
High Speed Hardware JPEG Codec
SSP
(SDIO) Port
Ethernet MAC
Computer
USB Drive
(PTP, MSC Devices,
USB Expansion
LCD Display
USB 2.0
Host I/F (2)
Color HD-LCD
Controller
Ethernet
Physical Layer
USB 2.0
High Speed/
Full Speed I/F
ARM9
MMU, VPU
WiFi, SDIO,
Storage Options
Direct Resistive
and Capacitive
Touch Control
Touchscreen
Controller
Stereo Audio Audio Co-processor
Class-D Amp, DAC,
MIC-in, EQ, NR
Microphone In
Display Processor
Analog TCON LVDS/
DVI-A Comp. RGB
H/W Overlay
LED B/L V
USB 802.11n
Bluetooth®
GSM, Radio
ARM CPU
16KB/ 32KB Cache
Vector Floating Point Unit
Hardware 1080p Video Engine
and
Video Post Processor
Graphics Processing Unit
200M Pixel
Alpha Blend
GPIO / ADC
Power Supply Controller
DC-DC, LCD
SPI Bus
Memory Cards
USARTs (3)
Conexant Modem
CX93510 JPEG Encoder with
BT.656 Camera Interface
Serial FLASH/ ROM
DDR2
NAND Flash
Controller
BT.656 Camera I/F
MLC NAND/ Boot
CMOS Sensor
Video-in
Conexant Modem
Bluetooth
User Interface Panel
IR Remote
Rotation/ Light Sensor
Touchscreen
Memory Card Controller
(CF, SM, MS, xD, SD/ MMC)
Memory Controller
