Video and Multimedia MPEG Encoders/Decoders/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. 64-Mbit SDRAM Video In Audio In Video Picture Analysis and Filter MPEG-2/1 Video Encode MPEG/AC-3 Audio Encode Program/ TS/ES PES Stream Mux Compressed Data Out 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 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 Video and Multimedia MPEG Encoders/Decoders/Codecs CX23416 Features Video Encoding Audio Encoding • High-quality real-time encoding (I-, B-, and P-frames) • Dolby Digital (AC-3) 2-channel • Supports MPEG-2 (MP@ML, SP@ML) and MPEG-1 • MPEG-1 Layer II - 525/60 (NTSC) up to 720x480 @ 30 fps - 625/50 (PAL) up to 720x576 @ 25 fps • Sampling rates of 32 kHz, 44.1 kHz, and 48 kHz • Compressed bit rates up to 448 kbit/sec • HDTV MPEG capture Interfaces • Variable and constant bit rate up to 15-Mbit/sec • Video input: 4:2:2 YUV CCIR-656 • Programmable GOP lengths • Adaptive field/frame (motion compensation type 8 DCT) • Field/frame motion estimation • Audio input: Stereo Sony I2S • MPEG input and output supports one of the following - - 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 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 • Speckle noise reduction • Host interface supports one of the following • Sharpness control - 32-bit, 33 MHz PCI - 8-bit microcontroller • Recursive noise reduction • Inverse telecine (3:2 pulldown) • General-purpose input/output with 16 programmable pins • Scene change detection • Adaptive quantization Package • Supports elementary program, and transport streams • 233 BGA • 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. © 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. 02-0509 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