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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CS4922 датащи(PDF) 1 Page - Cirrus Logic |
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CS4922 датащи(HTML) 1 Page - Cirrus Logic |
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1 / 34 page  Preliminary Product Information This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice. 1 Copyright © Cirrus Logic, Inc. 1999 (All Rights Reserved) P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.cirrus.com CS4922 MPEG/G.729A Audio Decoder System Features l DSP Optimized for Audio Decode, 24-bit Fixed Point w/48-bit Accumulator l On-Chip Functional Blocks Include: - DSP with RAM and ROM Memories - CD Quality Stereo DAC with Output Filtering - Mono Output & Digital Volume Control - S/PDIF Transmitter, Bidirectional PCM Audio Port - Internal Phase Locked Loop for Clocking - Dedicated Compressed Serial Input Interface l MPEG-1 & MPEG-2 Layers 1 & 2 With All Sample/Bit Rates and Ancillary Data Support. l MPEG-1 & MPEG-2 Packetized Audio Stream and Elementary Stream Input l G.729A Audio Decode l PCM Synthesis for Auxiliary Audio l Pin Compatibility with CS4920A and Primary Feature/Firmware Compatible l +5 Volt Only CMOS, 44 pin PLCC Description The CS4922 is a complete audio decompression sub- system implemented in a single high integration mixed signal CMOS chip. The CS4922 has been widely used in direct broadcast system set-top boxes and proprietary embedded systems which pull compressed audio from local system memory. The CS4922 is tailored to include the necessary hard- ware and firmware to ensure proper audio/video synchronization for MPEG-2 audio decompression. In addition to audio decoding this programmable DSP solu- tion provides robust error concealment and feature implementations like ancillary data support and PCM synthesis. The CS4922 can also support the decode of other com- pression standards such as G.729A with a separate download image. The flexible architecture of the CS4922 provides the ability to mix compressed audio with data from the auxiliary PCM port. ORDERING INFORMATION CS4922-CL 44-pin PLCC CDB4922 Evaluation Board VD1 VD4 SCK/SCL SDA/CDOUT CDIN CS REQ VA+ Serial Control Port (SPI or I2C) AUXLR AUXIN AUXOUT AUXCLK FSYNC SCLK SDATA Auxiliary Serial Audio Port Serial Audio Port RESET 90_CLK BOOT 33 bit Counter DGND1 DGND4 DSP FLT CLKIN EXTCK ALTCLK CLKOUT PLL + Clock Manager Stereo DAC AOUTM AOUTL AOUTR AES/EBU - S/PDIF TX Transmitter Programmable IO/ Pins PIO XF1 XF2 XF3 XF4 AGND1 AGND2 JUL ‘99 DS227PP2 |
Аналогичный номер детали - CS4922 |
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Аналогичное описание - CS4922 |
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