Convergence Video MPEG Encoders/Codecs

USB 2.0 TV Tuner Reference Design

Featuring the CX23416 MPEG Encoder and CX25843 Audio/Video Decoder Delivering compressed video and audio over USB 2.0 using Conexant’s low-cost, low-power CX23416 and CX25843 Conexant’s broadband communications portfolio includes a comprehensive suite of semiconductor solutions that enable the digital home and information network. The USB 2.0 TV tuner reference design demonstrates the capabilities of the CX25843, the newest audio and video mixed signal decoder, and the industry-leading CX23416 MPEG encoder. This reference design is representative of the many USB applications for which the CX25840/1/2/3 and CX23416 can be used, ranging from time-shifted television recording to video conferencing, video editing, and security/ surveillance. This device set is fully functional and leverages a very high level of system-on-chip integration in combination with powerful software and middleware solutions to provide advanced system performance. In addition, the drivers are Windows Hardware Quality Lab (WHQL) compliant and meet USB Implementor's Forum (IF) and Microsoft Media Center

Reference Design Features

Edition (MCE) requirements. The USB host’s dynamic configuration makes

• Fulfillment of MCE requirements

the setup extremely user friendly. The result is an effective reference

• WHQL ready and USB IF certifiable

platform that manufacturers can use to accelerate the development of

• MPEG-1/2 capture of up to 15 Mbps

their own products.

• Audio capture of up to 384 kbps • TV tuner, S-Video, and Composite video input

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• Stereo line level inputs

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• Two 10-bit A/Ds • Auto detection and configuration for video and broadcast audio

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• Low power consumption

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• Two-dimensional (2D), Adaptive 4H comb filter for NTSC and PAL, bell filter for SECAM

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CX23416 and CX25843 Block Diagram

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Part Number CX23416 and CX25843 Description

USB 2.0 TV Tuner Reference Design

Convergence Video MPEG Encoders/Codecs

All design kits come complete with bills of material, schematics, ®

gerber files, ORCAD files, binary code, source code, and

Conexant firmware, Application Programming Interface (API), middleware, and time-shifting application with GUI.

application support. The reference design includes proprietary

CX23416/CX25843 Features CX23416 Video Encoding • High-quality real-time encoding (I-, B-, and P-frames) • Supports MPEG-2 (MP@ML, SP@ML) and MPEG-1:

- 8-bit parallel program data - 8-bit parallel Serial Peripheral Interface (SPI) transport data - 1-bit serial transport data • One 64-Mb SDRAM

- 525/60 (NTSC) up to 720x480 @ 30 fps - 625/50 (PAL) up to 720x576 @ 25 fps

• Host interface supports one of the following: - 32-bit, 33 MHz PCI - 8-bit microcontroller

• High Definition Television (HDTV) MPEG capture • Variable and constant bit rate up to 15 Mbps

• General Purpose Input/Output (GPIO) with 16 programmable pins

• Programmable Group of Pictures (GOP) lengths • Adaptive field/frame: motion compensation type 8 Discrete Cosine Transform (DCT)

CX25843 Video

• Field/frame motion estimation:

• 2D, Adaptive 4H comb filter for NTSC and PAL, bell filter for SECAM

- B-frame: ±296 (H) × ±184 (V) - P-frame: ±326 (H) × ±202 (V) - Half-pel accuracy

• Two 10-bit A/D with 10-bit video path through entire chip • Composite Video Baseband Signal (CVBS), S-Video, and YPbPr input

• 4:2:2 to 4:2:0 conversion • Speckle noise reduction

• CCIR 656/601/Square Pixel output

• Sharpness control

Audio

• Recursive noise reduction • Inverse telecine (3:2 pulldown)

• Worldwide standard broadcast audio decode: Broadcast Television System Committee (BTSC), NICAM, A2, EIAJ, A2M

• Scene change detection

• Second audio program

• Adaptive quantization

• Flexible VBI slicer and raw mode support

• Support of program, transport, and DVD, VR+Video streams

• Available video-locked audio clock

• Automatic Vertical Blanking Interval (VBI) extraction

• Baseband audio support via I2S (I/O)

Audio Encoding

• AC97 audio code support

• MPEG 1 Layer II

• Baseband audio and broadcast stereo audio processing

• Sampling rates of 32 kHz, 44.1 kHz, and 48 kHz

Miscellaneous

• Compressed bit rates up to 384 kbps

• Auto detection and configuration for video and broadcast audio

Interfaces

• Low power consumption

• Video input: 4:2:2 YUV CCIR-656 • Audio input: Stereo Sony I2S

• Integrated voltage regulator • Infrared (IR) blaster modem

• MPEG input and output supports one of the following: - Peripheral Component Interface (PCI) Direct Memory Access (DMA) master or PCI slave

© 2003, 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.

03-1052

• CX23416 233-ball BGA, CX25843 80-pin TQFP

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

Conexant shall not be liable for any

special, indirect, incidental or consequential damages as a result of its use.

Package

Order# 102349A