Datasheet > CS4922-CL

CS4922-CL

更新时间： 2024-09-28 22:25:23

品牌	Logo	应用领域
凌云 - CIRRUS		解码器
页数	文件大小	规格书
34页	644K
描述
MPEG/G.729A AUDIO DECODER SYSTEM

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CS4922-CL 数据手册

CS4922

MPEG/G.729A Audio Decoder System

Features

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.

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

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.

- 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

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.

l PCM Synthesis for Auxiliary Audio

l Pin Compatibility with CS4920A and Primary

Feature/Firmware Compatible

l +5 Volt Only CMOS, 44 pin PLCC

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)

Stereo DAC

AUXLR

AUXIN

AUXOUT

AUXCLK

Auxiliary

Serial Audio

Port

AOUTM

AOUTL

AOUTR

Serial

Audio

Port

FSYNC

SCLK

SDATA

DSP

AES/EBU - S/PDIF

Transmitter

RESET

90_CLK

BOOT

PIO

XF1

XF2

XF3

XF4

Programmable

IO/ Pins

33 bit Counter

PLL

Clock Manager

DGND1

DGND4 FLT CLKIN EXTCK ALTCLK CLKOUT AGND1 AGND2

This document contains information for a new product.

Cirrus Logic reserves the right to modify this product without notice.

Preliminary Product Information

JUL ‘99

DS227PP2

P.O. Box 17847, Austin, Texas 78760

(512) 445 7222 FAX: (512) 445 7581

http://www.cirrus.com

12 3 4 5 6 7...34

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与CS4922-CL相关器件

型号	品牌	获取价格	描述	数据表
CS4923	CIRRUS	获取价格	Multi-Channel Digital Audio Decoders
CS492301-CL	CIRRUS	获取价格	Multi-Channel Digital Audio Decoders
CS492305-CL	CIRRUS	获取价格	Multi-Channel Digital Audio Decoders
CS4923-CL	CIRRUS	获取价格	Multi-Channel Digital Audio Decoders
CS4923XX-CL	CIRRUS	获取价格	Consumer Circuit, CMOS, PQCC44
CS4924	CIRRUS	获取价格	Multi-Channel Digital Audio Decoders
CS492401-CL	CIRRUS	获取价格	Multi-Channel Digital Audio Decoders
CS492405-CL	CIRRUS	获取价格	Multi-Channel Digital Audio Decoders
CS4924-CL	CIRRUS	获取价格	Multi-Channel Digital Audio Decoders
CS4925	CIRRUS	获取价格	Multi-Channel Digital Audio Decoders

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