MT8950AC Datasheet

IC型號(hào)：
MT8950AC
PDF描述：
ISO-CMOS ST-BUS⑩ FAMILY Data Codec
文件大?。?/label>
226.66KB
PDF頁數(shù)：
16頁
芯片廠家：
MITEL

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ISO-CMOS ST-BUS鈩?FAMILY

MT8950

Data Codec

Features

鈥?/div>

Transparent coding and decoding of 0 to 8, 9.6

and 19.2 kbps data

Coding compatible to PCM voice channels at

56/64 kbps in ST-BUS format

Automatic line polarity detection and correction

Loopback facility for test purposes

Selectable data formats: RZ or NRZ

Eight user selectable modes of operation

Low power ISO-CMOS technology

ISSUE 4

November 1990

Ordering Information

MT8950AC

24 Pin Ceramic DIP

0擄C to 70擄C

Description

The MT8950 is a coder/decoder which uses the

Transition Encoded Modulation (TEM) technique for

encoding/decoding low speed data to and from a 56/

64 kbps channel (equivalent to PCM Voice). The

coding and decoding scheme is transparent and can

accept either synchronous or asynchronous data up

to 8 kbps (inclusive); at 9.6 kbps and 19.2 kbps.

The MT8950 is fabricated in MITEL鈥檚 ISO-CMOS

technology.

Applications

鈥?/div>

Transparent coder/decoder for synchronous

and asynchronous data

Data terminal (RS-232C, etc.) to ST-BUS

interface

Data switching on digital PBXs

Channel banks/TDM multiplexers

SCLK

RxE

NRZ/RZ

Input

Circuit

NRZ/RZ

Output

Circuit

Timing

& Mode

Control

Encoder

Enable

Logic

C2i

F1i

Decoder

DSTi

ST-BUS

Interface

DSTo

CSTi

Control

Monitoring

Interface

SPo

NRZo

SPi

PRST

Figure 1 - Functional Block Diagram

6-3

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