T8532-JL-TR データシートの表示（PDF） - Agere -> LSI Corporation

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T8532-JL-TR

Multichannel Programmable Codec Chip Set

Agere -> LSI Corporation 

Preliminary Data Sheet

November 2000

T8531/T8532 Multichannel Programmable

Codec Chip Set

Features

s Single 5 V power supply operation

s Per-channel programmable transmit gain

— 25.6 dB range, better than 0.01 dB steps

s Per-channel programmable receive gain

— 17.8 dB range, better than 0.01 dB steps

s Per-channel programmable hybrid balance

s Programmable termination impedances

s Programmable µ-law, A-law, or linear PCM output

s DTMF generator

s DTMF receiver

s Caller ID generator

s Call progress tones generator

s Automatic gain calibration

s Programmable time-slot assignment with bit offset

s Low-noise, balanced, receive SLIC interface

s Few or no SLIC/codec interface components

required

s Analog and digital loopbacks

s Sigma-delta converters with dither noise reduction

s Serial microcontroller control interface

s Available in 64-pin MQFP and TQFP packages

General Description

The Multichannel Programmable Codec Chip Set is

comprised of the T8531 16-channel line card signal

processor and one or two custom T8532 octal A/D

and D/A converters. A ROM-coded tone plant is

included on the signal processor. Together these

devices achieve a highly integrated and highly pro-

grammable multichannel voice codec solution.

Software is provided to compute the gain and filter

coefficients required to program the codec.

VTX (8)

VRTX (8)

VRP (8)

VRN (8)

T8532

OCTAL

A/D

D/A

VTX (8)

VRTX (8)

VRP (8)

VRN (8)

T8532

OCTAL

A/D

D/A

2

3

T8531

DIGITAL

SIGNAL

2

PROCESSOR

3

ASIC

PCM

INTERFACE

CK16

Figure 1. System Block Diagram

MICROPROCESSOR

INTERFACE

5-3793F (F)

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