MT9123 Zarlink Semiconductor, MT9123 Datasheet

MT9123

Manufacturer Part Number

MT9123

Description

Dual Voice Echo CANceller ( Itu-t G165 Compliant)

Manufacturer

Zarlink Semiconductor

Datasheet

1.MT9123.pdf (31 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MT9123AP

Manufacturer:

MITEL

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MT9123AP1

Manufacturer:

Quantity:

184

Current page: 1 of 31
Download datasheet (508Kb)

Features

•

Applications

•

FORMAT

Dual channel 64ms or single channel 128ms

echo cancellation

Conforms to ITU-T G.165 requirements

Narrow-band signal detection

Programmable double-talk detection threshold

Non-linear processor with adaptive suppression

threshold and comfort noise insertion

Offset nulling of all PCM channels

Controllerless mode or Controller mode with

serial interface

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

Wireless Telephony

Trunk echo cancellers

ENA2

ENB2

Rout

LAW

NLP

IC3

IC4

Sin

IC1

Programmable

Bypass

IC2

µ/A-Law

Linear/

µ/A-Law

VDD

Linear/

Offset

Null

Figure 1 - Functional Block Diagram

VSS

Echo Canceller A

Echo Canceller B

PWRDN

Narrow-Band

Attenuator

Detector

Non-Linear

12dB

Processor

Description

The MT9123 Voice Echo Canceller implements a

cost effective solution for telephony voice-band echo

cancellation

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.

The

Controller or Controllerless. Controller mode allows

access to an array of features for customizing

MT9123 operation. Controllerless mode is for

applications where default register settings are

sufficient.

Microprocessor

Double-Talk

F0od

Detector

Interface

MT9123

Offset

Null

µ/A-Law

Linear/

MT9123AP

MT9123AE

Dual Voice Echo Canceller

F0i

conforming

operates

Ordering Information

-40 °C to + 85 °C

µ/A-Law

Linear/

BCLK/C4i

ISSUE 1

CMOS

28 Pin PLCC

28 Pin PDIP

two

MCLK

ITU-T

major

Data Sheet

MT9123

October 1996

Sout

Rin

ENA1

ENB1

CONFIG1

CONFIG2

S1/DATA1

S2/DATA2

S3/CS

S4/SCLK

modes:

G.165

the

Related parts for MT9123

Related keywords

MT9123 datasheet
MT9123 data sheet
MT9123 pdf datasheet
MT9123 component
MT9123 part
MT9123 distributor
MT9123 RoHS
MT9123 datasheet download