Datasheet > MT9126

MT9126

更新时间： 2024-11-29 04:14:11

品牌	Logo	应用领域
MITEL		转换器 PC
页数	文件大小	规格书
22页	315K
描述
CMOS Quad ADPCM Transcoder

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中文翻译

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数据手册

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MT9126 数据手册

CMOS MT9126

Quad ADPCM Transcoder

Preliminary Information

ISSUE 2

May 1995

Features

•

Full duplex transcoder with four encode

channels and four decode channels

Ordering Information

MT9126AE

MT9126AS

28 Pin Plastic DIP

28 Pin SOIC

•

32 kb/s, 24 kb/s and 16 kb/s ADPCM coding

complying with ITU-T (previously CCITT) G.726

(without 40 kb/s), and ANSI T1.303-1989

-40 °C to +85 °C

•

Low power operation, 25 mW typical

Description

Asynchronous 4.096 MHz master clock

operation

The Quad ADPCM Transcoder is a low power,

CMOS device capable of four encode and four

decode functions per frame. Four 64 kbit/s PCM

octets are compressed into four 32, 24 or 16 kbit/s

ADPCM words, and four 32, 24 or 16 kbit/s ADPCM

words are expanded into four 64 kbit/s PCM octets.

The 32, 24 and 16 kbit/s ADPCM transcoding

•

SSI and ST-BUS interface options

Transparent PCM bypass

Transparent ADPCM bypass

Linear PCM code

No microprocessor control required

Simple interface to Codec devices

Pin selectable µ−Law or A-Law operation

algorithms

utilized

conform

ITU-T

Recommendation G.726 (excluding 40 kbit/s), and

ANSI T1.303 - 1989.

Pin selectable ITU-T or signed magnitude PCM

coding

Switching, on-the-fly, between 32 kbit/s and 24 kbit/s

ADPCM, is possible by controlling the appropriate

mode select (MS1 - MS6) control pins. All optional

functions of the device are pin selectable allowing a

simple interface to industry standard codecs, digital

phone devices and Layer 1 transceivers. Linear

coded PCM is provided to facilitate external DSP

functions .

•

Single 5 volt power supply

Applications

•

Pair gain

Voice mail systems

Wireless telephony systems

PCMo1

PCMi1

Full Duplex

ADPCMi

ADPCMo

ADPCM

I/O

PCM

I/O

Quad

Transcoder

PCMo2

PCMi2

ENB1

ENB2/F0od

BCLK

F0i

MCLK

Timing

C2o

EN1

EN2

Control Decode

VDD VSS PWRDN IC

MS1 MS2 MS3

FORMAT MS4 MS5 MS6 LINEAR SEL

A/µ

Figure 1 - Functional Block Diagram

8-33

12 3 4 5 6 7...22

中文翻译

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与MT9126相关器件

型号	品牌	获取价格	描述	数据表
MT9126AE	MITEL	获取价格	CMOS Quad ADPCM Transcoder
MT9126AE1	MICROSEMI	获取价格	ADPCM Codec, A/MU-Law, 1-Func, CMOS, PDIP28, LEAD FREE, PLASTIC, MS-011AB, DIP-28
MT9126AS	MITEL	获取价格	CMOS Quad ADPCM Transcoder
MT9126ASR	ZARLINK	获取价格	ADPCM Codec, A/MU-Law, 1-Func, CMOS, PDSO28, 0.300 INCH, MS-013AE, SOIC-28
MT9126ASR	MICROSEMI	获取价格	Codec, CMOS, PDSO28
MT9126ASR1	MICROSEMI	获取价格	ADPCM Codec, A/MU-Law, 1-Func, CMOS, PDSO28, 0.300 INCH, LEAD FREE, MS-013AE, SOIC-28
MT9126ASR1	ZARLINK	获取价格	ADPCM Codec, A/MU-Law, 1-Func, CMOS, PDSO28, 0.300 INCH, LEAD FREE, MS-013AE, SOIC-28
MT9160	MITEL	获取价格	ISO2-CMOS 5 Volt Multi-Featured Codec (MFC)
MT91600	ZARLINK	获取价格	Programmable SLIC
MT91600	MITEL	获取价格	Programmable SLIC