cx23885 Conexant Systems, Inc., cx23885 Datasheet - Page 2

• Manufacturer Part Number: cx23885
• Description: Pci Express Video And Broadcast Audio Decoder
• Manufacturer: Conexant Systems, Inc.

07-2676
Features
• PCI Express 1.0a compliant
• Worldwide audio and video decoding
• Automatic video and broadcast audio standard detection
• Flexible video input MUX supporting composite, S-Video,
• Integrated sigma-delta stereo audio ADCs with 4:2 MUX
• Audio sample-rate converters on all inputs and outputs
• Two MPEG transport stream ports — serial or
• Support for the following audio formats: stereo, mono,
• Two program stream inputs — serial or parallel interfaces
Convergence Video
PCI Video Decoders
Conexant Product Portfolio
The company’s broad portfolio of semiconductor products also includes client-side DSL, cable, and dial-up modem solutions; fiber optic system-on-
chips; broadcast video encoders and decoders; digital set-top box components and systems solutions; and IEEE 802.11a/b/g/n-compliant WLAN
chipsets. Additional products include a complete line of asymmetric and symmetric DSL central office solutions, which are used by service providers
worldwide to deliver broadband data, voice, and video over copper telephone lines.
and configuration
and component inputs with integrated anti-alias filtering
parallel interfaces
dual language (mono), tri language (Trivox)
© 2007 , 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.
aNy exPress or ImPlIeD warraNTIes, INCluDINg merCHaNTabIlITy, fITNess for a
ParTICular PurPose aND NoN-INfrINgemeNT.
special, indirect, incidental or consequential damages as a result of its use.
Pb Inputs
Pr Inputs
Chroma,
Chroma,
Audio In
Audio In
2 CVBS,
3 CVBS,
3 CVBS
SIF, or
SIF, or
Luma,
Luma,
Inputs
THIs maTerIal Is ProVIDeD as Is aND wITHouT
Luma
L/R 1
L/R 2
or
Conexant shall not be liable for any
2
3
Front End
Front End
Analog
Analog
Front End
18-Bit
Audio
ADCs
CH 2
CH 3
Analog
CH 1
Video/SIF
GPIO x24
10-Bit
ADC
GPIO
Port or BT.656/VIP1.1
10-Bit
Video
Serial TS/PS Input
ADC
Input or Output
Doc# PBR-200865
www.conexant.com
General Information:
U.S. and Canada: [phone]
International: [phone]
Headquarters
4000 MacArthur Blvd.
Newport Beach, CA 92660
Clock, Data,
Start, Valid
CX23885 Block Diagram
Converter and
ColorSpace
Formatter
BTSC/EIAJ/
A2/NICAM/
Decoder
RS 232
Audio
UART
AM
NTSC/PAL/
Decoder
SECAM
Video
Balance/Mute
Baseband
Vol/Tone/
Serial Audio
32, 44.1, 48.
16 to 24-Bit
Audio
Parallel TS/PS Input
• ITU-R BT.656 input port
• ITU-R BT.656 output port
• I 2 S in (line-in audio)
• I 2 S out
• Auxiliary Phase Locked Loop (PLL) clock for general use
Port or BT.656/VIP1.1
• Two I 2 C master ports (two ports are required for a
• Macrovision 1.0 detection compliant
• Programmable Vertical Blanking Interval (VBI) data slicer for
• Infrared transmitter and receiver logic
• High-quality multi-tap horizontal and vertical image scaler
96 kHz
Clock, Data[7:0],
In/Out
Input or Output
two-tuner design to isolate I 2 C transactions to reduce noise)
data services such as closed caption, Wide Screen Signaling
(WSS), Gemstar 1x and 2x, and program guides
for decoded video or 4:2:2 sources
Start, Valid
DMA Controller
SRAM Butters
RISC Engine
and
Color Space
Converter
Formatter
and
Single Crystal
Frequency
Amplifier
System
Crystal
Express
PLL
MAC
DLL
PCI
TL
Clock, Data,
Serial TS/PS
Start, Valid
Input Port
I2C Master 1
I2C Master 2
Aux/Audio
Express
Video
PHY
PCI
PLL
PLL
L/F
x1
SDA{1}
SDA{2}
Audio
Master
Clock
x1
PCI
Express
SCL{1}
SCL{2}