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| Convergence Video MPEG Encoders/Codecs MPEG-2 Encoder CX23416 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. Distinguishing Features * Video Encoding - High-quality real-time encoding - Supports MPEG-2 (MP@ML, SP@ML) and MPEG-1 - HDTV MPEG Capture * Audio Encoding - MPEG 1 Layer II - Sampling rates of 32 kHz, 44.1 kHz, and 48 kHz - Compressed bit rates up to 448 kbit/sec 64-Mbit SDRAM Video In Audio In Video Picture Analysis and Filter MPEG-2/1 Video Encode MPEG 1 Layer II Audio Encoding Program/ Transport DVD VR+Video Compressed Data Out Raw Capture HD MPEG In PCI DMA Master or Microcontroller PCI or Microcontroller CX23416 Block Diagram Part Number CX23416 Description MPEG-2 audio/video Encoder Convergence Video MPEG Encoders/Codecs 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 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. Audio Encoding * 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 I2S * 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 (c) 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. www.conexant.com General Information: U.S. and Canada: (800) 854-8099 International: (949) 483-6996 Headquarters - Newport Beach 4000 MacArthur Blvd, P Box C .O. Newport Beach, CA 92660-3095 Order# 102074B Conexant shall not be liable for any special, indirect, incidental or consequential damages as a result of its use. 03-1010 |
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