CS4922-CL datasheet(1/34 Pages) CIRRUS

部件名	CS4922-CL

功能描述	MPEG/G.729A AUDIO DECODER SYSTEM

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制造商	CIRRUS [Cirrus Logic]

网页	http://www.cirrus.com

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Preliminary Product Information

This document contains information for a new product.

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

1

Copyright

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

类似零件编号 - CS4922-CL

制造商	部件名	数据表	功能描述
High Voltage Power Solu...	CS4920C1	106Kb / 1P	200 KV RECTIFIER
Cirrus Logic	CS4923	678Kb / 56P	Multi-Channel Digital Audio Decoders
	CS4923-CL	678Kb / 56P	Multi-Channel Digital Audio Decoders
	CS492301-CL	678Kb / 56P	Multi-Channel Digital Audio Decoders
	CS492305-CL	678Kb / 56P	Multi-Channel Digital Audio Decoders

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类似说明 - CS4922-CL

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Sanyo Semicon Device	LC8230	138Kb / 7P	MPEG Audio Decoder LSI
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STMicroelectronics	STI3520ACV	1Mb / 15P	MPEG AUDIO / MPEG 2 VIDEO INTEGRATED DECODER
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STMicroelectronics	STA003T	309Kb / 32P	MPEG 2.5 LAYER III AUDIO DECODER
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Sony Corporation	CXD1930Q	42Kb / 4P	MPEG Video Decoder