T7570 View Datasheet(PDF) - Agere -> LSI Corporation

Part Name

Description

Manufacturer

T7570

Programmable PCM codec with hybrid-balance filter.

Agere -> LSI Corporation 

T7570 Programmable PCM Codec

with Hybrid-Balance Filter

Data Sheet

October 1996

Table of Contents

Content

Page

Features ...................................................................................................................................................................1

Description ...............................................................................................................................................................1

Pin Information .........................................................................................................................................................3

Functional Description ..............................................................................................................................................5

Powerup Initialization ............................................................................................................................................5

Powerdown State ..................................................................................................................................................5

Transmit Filter and Encoder ..................................................................................................................................5

Decoder and Receive Filter ..................................................................................................................................6

PCM Interface .......................................................................................................................................................6

Serial Control Port ................................................................................................................................................6

Programmable Functions ......................................................................................................................................7

Hybrid-Balance Filter ..........................................................................................................................................11

Programming the Filter .......................................................................................................................................12

Absolute Maximum Ratings ....................................................................................................................................13

Handling Precautions .............................................................................................................................................13

Electrical Characteristics ........................................................................................................................................14

dc Characteristics ...............................................................................................................................................14

Transmission Characteristics ..................................................................................................................................15

Timing Characteristics ............................................................................................................................................20

Applications ............................................................................................................................................................25

Outline Diagrams ....................................................................................................................................................26

28-Pin PLCC .......................................................................................................................................................26

Ordering Information ...............................................................................................................................................27

2

Lucent Technologies Inc.

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