Datasheet > CS6420

CS6420

更新时间： 2024-09-22 22:40:19

品牌	Logo	应用领域
凌云 - CIRRUS		/
页数	文件大小	规格书
52页	811K
描述
FULL DUPLEX SPEAKERPHONE CHIP

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中文翻译

获取价格

数据手册

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CS6420 数据手册

CS6420

Full-Duplex Speakerphone Chip

Features

General Description

Most modern speakerphones use half-duplex operation,

which switches transmission between the far-end talker

and the speakerphone user. This is done because the

acoustic coupling between the speaker and microphone

is much higher in speakerphones than in handsets

where the coupling is mechanically suppressed.

Single-chip full-duplex hands-free operation

Automatic gain control

Optional 34 dB microphone preamplifier

Integrated mute and volume control

Integrated 80 dB IDR dual codec

Speech-trained Network and Acoustic Echo

Cancellers

Powerdown mode

The CS6420 enables full-duplex conversation with a sin-

gle-chip solution. The CS6420 can easily replace

existing half-duplex speakerphone ICs with a huge in-

crease in conversation quality.

Microcontroller Interface

The CS6420 consists of telephone & audio interfaces,

two codecs and an echo-cancelling DSP.

ORDERING INFORMATION

CS6420-CS

20-pin SOIC

CDB6420

Evaluation Board

AVDD

DGND

NC4

NC3

NC2

NC1

AGND

0,6,9.5,12 dB

Pre-Emphasis

Filter

Network

Echo Canceller

CLKI

CLKO

Clock

Generation

Acoustic

Echo Canceller

Pre-Emphasis

Filter

1 kΩ

34 dB

API

0,6,9.5,12 dB

AVDD

2.12 V

BANDGAP

3.5 V

Microcontroller Interface

STROBE DRDY

DATA

RST

DVDD

APO

This document contains information for a new product.

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

Preliminary Product Information

Cirrus Logic, Inc.

Crystal Semiconductor Products Division

P.O. Box 17847, Austin, Texas 78760

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

http://www.crystal.com

JUN ‘97

DS205PP2

12 3 4 5 6 7...52

中文翻译

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