Datasheet > MT9123AE

MT9123AE

更新时间： 2024-11-28 22:53:15

品牌	Logo	应用领域
MITEL		电信集成电路光电二极管综合业务数字网
页数	文件大小	规格书
32页	193K
描述
CMOS Dual Voice Echo Canceller

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中文翻译

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数据手册

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MT9123AE 数据手册

CMOS MT9123

Dual Voice Echo Canceller

Preliminary Information

ISSUE 1

October 1996

Features

•

Dual channel 64ms or single channel 128ms

echo cancellation

Ordering Information

MT9123AP

MT9123AE

28 Pin PLCC

28 Pin PDIP

•

Conforms to ITU-T G.165 requirements

Narrow-band signal detection

-40 °C to + 85 °C

Programmable double-talk detection threshold

Description

Non-linear processor with adaptive suppression

threshold and comfort noise insertion

The MT9123 Voice Echo Canceller implements a

cost effective solution for telephony voice-band echo

•

Offset nulling of all PCM channels

cancellation

conforming

ITU-T

G.165

Controllerless mode or Controller mode with

serial interface

requirements. The MT9123 architecture contains two

echo cancellers which can be conﬁgured to provide

dual channel 64 millisecond echo cancellation or

single channel 128 millisecond echo cancellation.

•

ST-BUS or variable-rate SSI PCM interfaces

Selectable µ/A-Law ITU-T G.711; µ/A-Law Sign

Mag; linear 2’s complement

•

Per channel selectable 12 dB attenuator

Transparent data transfer and mute option

19.2 MHz master clock operation

The MT9123 operates in two major modes:

Controller or Controllerless. Controller mode allows

access to an array of features for customizing the

MT9123 operation. Controllerless mode is for

applications where default register settings are

sufﬁcient.

Applications

•

Wireless Telephony

•

Trunk echo cancellers

Linear/

µ/A-Law

Non-Linear

Processor

Offset

Null

Linear/

µ/A-Law

Sin

Sout

Microprocessor

Interface

Double-Talk

Detector

Programmable

Bypass

Narrow-Band

Detector

Offset

Null

12dB

Attenuator

Linear/

µ/A-Law

Linear/

µ/A-Law

Rin

ENA1

ENB1

Rout

ENA2

ENB2

CONFIG1

CONFIG2

S1/DATA1

S2/DATA2

S3/CS

Echo Canceller A

Echo Canceller B

NLP

LAW

FORMAT

IC3

IC4

S4/SCLK

IC1

IC2

VDD

VSS

PWRDN

F0od

F0i

BCLK/C4i

MCLK

Figure 1 - Functional Block Diagram

8-45

12 3 4 5 6 7...32

中文翻译

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与MT9123AE相关器件

型号	品牌	获取价格	描述	数据表
MT9123AP	MITEL	获取价格	CMOS Dual Voice Echo Canceller
MT9123AP1	MICROSEMI	获取价格	ISDN Echo Canceller, 1-Func, CMOS, PQCC28, LEAD FREE, PLASTIC, MS-018AB, LCC-28
MT9123AP1	ZARLINK	获取价格	ISDN Echo Canceller, 1-Func, CMOS, PQCC28, LEAD FREE, PLASTIC, MS-018AB, LCC-28
MT9123APR	MICROSEMI	获取价格	Telecom IC, CMOS, PQCC28
MT9123APR	ZARLINK	获取价格	ISDN Echo Canceller, 1-Func, CMOS, PQCC28, PLASTIC, MS-018AB, LCC-28
MT9123APR1	MICROSEMI	获取价格	ISDN Echo Canceller, 1-Func, CMOS, PQCC28, LEAD FREE, PLASTIC, MS-018AB, LCC-28
MT9125	MITEL	获取价格	CMOS Dual ADPCM Transcoder
MT9125AE	MITEL	获取价格	CMOS Dual ADPCM Transcoder
MT9125AP	MITEL	获取价格	CMOS Dual ADPCM Transcoder
MT9126	MITEL	获取价格	CMOS Quad ADPCM Transcoder