Imaging Solutions
Interactive Display Appliances
CX92755 User Interface and Media Processor
Conexant’s CX92755 System-on-Chip (SoC) is
an integrated display, media, video, 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
video codec and graphics processing hardware.
To support robust system design and lower Bill
of Material (BOM) costs, the CX92755 also
integrates a stereo Class-D amplifier, microphone
input, touchscreen controller, and power supply
controller.
A high-performance ARM Cortex-A8 processor
with NEON SIMD Engine supports robust
embedded operating system operation and
advanced algorithm development. High
performance DDR3 memory supports high-
bandwidth operations. High-speed USB 2.0 Host
and Device ports support PC and peripheral
connection. A PCIe root and endpoint controller
supports additional peripheral expansion and
flexibility, as well as multi-chip communication
and control.
The hardware video subsystem supports 1080p
decode and video post processing for popular
video codecs, including H.264, and off-loads the
CPU from video decode tasks. To support full
duplex video codec operation, a 720p HD Video
Encoder is also supported. Along with video
Complete Multimedia Solution on a Single Chip
encode and decode, the CX92755 supports a
BT.656 compatible video-in port for video capture
applications. For advanced GUI operations,
the CX92755 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 CX92755 features a flexible,
programmable LCD interface, hardware JPEG
codec, and Conexant’s advanced Image
Processing pipeline. The CX92755 display sub-
system further integrates an LVDS transmitter
and high-speed triple video DACs to support a
wide range of display applications, up to 1080p
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.
The CX92755 contains several features which
lower cost and operating power while providing
unsurpassed image processing and flexibility.
Conexant’s Linux development environment
enables manufacturers to quickly design cost-
effective interactive display products. The SoC is
packaged in an environmentally-friendly, RoHS/
Green-compliant 441-pin fine-pitch ball grid array
(fpBGA).
Part Number CX92755
Description User Interface and Media
Processor
ARM Cortex-A8 CPU with L1/L2 cache and
NEON SIMD Engine
Hardware 1080p MPEG2 / MPEG4 / H.263 /
H.264 Video Decoder, 720p Encoder, and
BT.656 Video-in Port
Hardware graphics processor with Display List
Processor and Alpha Blend Unit
DDR3 Memory Interface
PCIe Root and Endpoint Interface
Advanced power management
Advanced MLC NAND Flash / ECC Controller
Integrated Class-D stereo DAC, stereo
microphone, and on-chip Power Supply
Controller
Programmable LCD Controller with integrated
video DACs, LVDS transmitter, up to 1080p
Output Support
Easily handles complex computational,
geometry, and system tasks
Hardware acceleration which supports full
duplex encode / decode and popular video
formats
Supports advanced UI operation and display
effects
High-Bandwidth Memory Architecture
Low cost touchscreen implementation with
proven drivers
Variable power/temperature controls for power
savings
Flexible memory storage interface
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•฀฀UI฀Controller
© 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.
Power Supply
Controller
DC
-DC, LCD
GPIO / ADC
Hardware Image Processing
Accelerators
Parallel JPEG Encode
Decode
Zoom and Arbitrary Scale
Color Space Conversion
High Speed Hardware JPEG Codec
Hardware 720p Video Encoder
and Video Preprocessor
Graphics Processing Unit
200
M Pixel
Alpha Blend
Memory Card
Controller
(
CF
,
SM
,
MS
,
xD
,
SD
/
MMC
)
Microphone In
PCIe (RC/EP)
IrDA
HSSD
UI Controller,
WiFi
®, Storage
Options
FIR Transceiver
Speaker /
Handset
SmartDAA®
Hardware 1080p Video Decoder
and Video Post Processor
Memory
Controller
USART / SPI
(3), I2C
NAND / Serial
Flash
Controller
ARM Cortex-A8 CPU
L1 / L2 Cache
Vector Floating Point Unit
Neon Processor
DDR3
Conexant Modem
Bluetooth
User Interface
IR Remote
Rotation
Light
Sensor
Touchscreen
CX93510 JPEG
Encoder with
BT
.656 Camera
Interface
Memory Cards
MLC NAND / Boot
Serial Flash Boot
ROM
Touchscreen
Controller
Display
Processor
Audio Co-processor
Class
-
D Amp
.,
DAC
,
MIC
-
in
,
EQ
,
NR
Camera I/F
including
BT
.656
Ethernet MAC
Color HD-LCD
Controller
USB 2.0 Host
Interface (2)
USB 2.0
High Speed/
Full Speed I/F
USB 802.11n
Bluetooth®
GSM
,
Radio
Computer
CMOS Sensor
Video In
USB Drive
PTP
,
MSC Devices
USB Expansion
Stereo Audio
Resistive &
Capacitive Touch
Control
Ethernet Physical
Layer
LCD Display
10-2958
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-202714
Conexant Product Portfolio
Conexant’s comprehensive product portfolio includes solutions for imaging, audio, video surveillance, and embedded modem applications.
CX92755 Features
Processor
•฀ARM฀Cortex-A8฀processor•฀NEON฀SIMD฀Engine•฀L1฀/฀L2฀cache฀฀External Memory Support
•฀DDR3฀Memory฀Subsystem฀-฀up฀to฀1GB฀support•฀Serial฀Flash฀&฀MLC฀NAND฀Flash฀Controller฀/฀฀ NAND boot / extended ECC
•฀Embedded฀Memory฀Card฀Controller฀(CF,฀xD,฀฀ MS, MS-Pro, SD/SDHC/SDXC, MMC)
Connectivity/Interfaces
•฀PCIe฀1.1฀Root฀and฀Endpoint฀Controller•฀Integrated฀Ethernet฀MAC•฀USB฀2.0฀high-speed฀device฀and฀USB฀hosts฀(2)•฀SPI,฀I2C, Integrated FIR IrDA and Conexant
DAA modem interfaces
Video and Image Processor
•฀Hardware฀1080p฀MPEG2฀/฀H.263฀/฀MPEG4฀/฀฀ H.264 Decoder, including up to Advanced
Profile MPEG4, and Main Profile H.264
•฀720p฀Video฀Encoder,฀supporting฀H.264฀/฀฀ MPEG4 / MPEG2 and full duplex Encode /
Decode •฀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•฀Advanced฀Video฀Overlay฀Engine฀with฀฀฀ independent overlay buffer
•฀High-speed฀triple฀8-bit฀Video฀DACs฀and฀฀ Analog TCON
•฀Integrated฀LVDS฀transmitter•฀Integrated฀Capacitive฀Touchscreen฀Controller
CX92755 Block Diagram
•฀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
Advanced Power Management
•฀Programmable฀power฀management฀and฀฀ voltage scaling
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
•฀฀441-pin฀fpBGA฀package฀-฀RoHS/Green฀฀ compliant
Development Environment
•฀Linux฀BSP฀Development฀Environment•฀JTAG฀In-Circuit฀Emulator•฀Conexant฀EVK฀and฀Reference฀Designs