Video and Multimedia
MPEG Encoders/Decoders/Codecs
CX23416
MPEG-2 Encoder
CX23416 Distinguishing Features
Video Encoding
- High-quality real-time encoding
- Supports MPEG-2 (MP@ML, SP@ML)
and MPEG-1
- HDTV MPEG Capture
Audio Encoding
- Dolby Digital (AC-3) 2-channel
- Sampling rates of 32 kHz, 44.1 kHz,
and 48 kHz
- Compressed bit rates up to 448 kbit/sec
The CX23416 is a low-cost, low-power MPEG-2 video
and audio encoder that integrates the functionality
of several ICs in a single device
Conexant's broadband communications portfolio includes a comprehensive
suite of semiconductor solutions that enable the digital home and information
network. The CX23416 is a highly integrated MPEG-2 audio/video encoder.
The versatile CX23416 actually incorporates the functionality of up to
three different chips, allowing Conexant to deliver this device at a price
point that will enable consumer electronics and personal computer
companies to dramatically reduce the cost of designing and manufacturing
their next-generation digital video products. Pre-filtering improvements
in the CX23416 include built-in noise filters that dynamically improve images
in the pre-processing stage. As a result, end-users obtain the best possible
picture, even as the data rate is reduced and the recording time
is lengthened. Other video quality improvements include an increased
motion search range, the de-coupling of motion estimation from encoding,
and an adaptive quantization scheme. To reduce the overall cost of the
CX23416 and achieve the highest video quality, Conexant devoted significant
engineering resources to determining the optimal balance between hardware
and software implementation of these processing improvements.
Part Number CX23416
Description MPEG-2 audio/video Encoder
CX23416 Block Diagram
Video In
Audio In
HD MPEG In
Raw Capture
PCI or Microcontroller
Compressed
Data Out
64-Mbit SDRAM
Video
Picture
Analysis
and Filter
Program/
TS/ES
PES Stream
Mux
PCI DMA Master or Microcontroller
MPEG-2/1
Video Encode
MPEG/AC-3
Audio Encode
2002, Conexant Systems, Inc. All Rights Reserved. Conexant and the
Conexant logo are 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.
Video and Multimedia
MPEG Encoders/Decoders/Codecs
02-0509
CX23416 Features
Video Encoding
High-quality real-time encoding (I-, B-, and P-frames)
Supports MPEG-2 (MP@ML, SP@ML) and MPEG-1
- 525/60 (NTSC) up to 720x480 @ 30 fps
- 625/50 (PAL) up to 720x576 @ 25 fps
HDTV MPEG capture
Variable and constant bit rate up to 15-Mbit/sec
Programmable GOP lengths
Adaptive field/frame (motion compensation type 8 DCT)
Field/frame motion estimation
- B-frame: 296(H) x 184(V)
- P-frame: 326(H) x 202(V)
- Half-pel accuracy
4:2:2 to 4:2:0 conversion
Speckle noise reduction
Sharpness control
Recursive noise reduction
Inverse telecine (3:2 pulldown)
Scene change detection
Adaptive quantization
Supports elementary program, and transport streams
Automatic VBI extraction
Audio Encoding
Dolby Digital (AC-3) 2-channel
MPEG-1 Layer II
Sampling rates of 32 kHz, 44.1 kHz, and 48 kHz
Compressed bit rates up to 448 kbit/sec
Interfaces
Video input: 4:2:2 YUV CCIR-656
Audio input: Stereo Sony I
2
S
MPEG input and output supports one of the following
- PCI DMA master or PCI slave
- 8-bit parallel program data
- 8-bit parallel SPI transport data
- 1-bit serial transport data
One 64 Mbit SDRAM
Host interface supports one of the following
- 32-bit, 33 MHz PCI
- 8-bit microcontroller
General-purpose input/output with 16 programmable pins
Package
233 BGA
Conexant provides complete software support for the CX23416,
including an on-chip API function call layer and binary and source
code examples. Evaluation boards are also available for the
CX23416 encoder. Please contact Conexant for more details on
these reference designs.
www.conexant.com
General Information:
U.S. and Canada: (800) 854-8099
International: (949) 483-6996
Headquarters Newport Beach
4311 Jamboree Rd, P.O. Box C
Newport Beach, CA 92660-3095
Order# 102074A
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