Datasheet > MT8985AE

MT8985AE

更新时间： 2024-11-17 22:51:03

品牌	Logo	应用领域
MITEL		开关
页数	文件大小	规格书
18页	326K
描述
CMOS ST-BUS⑩ FAMILY Enhanced Digital Switch

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MT8985AE 数据手册

CMOS ST-BUS FAMILY MT8985

Enhanced Digital Switch

ISSUE 5

March 1997

Features

Ordering Information

•

256 x 256 channel non-blocking switch

MT8985AE

MT8985AP

MT8985AL

40 Pin Plastic DIP

44 Pin PLCC

44 Pin QFP

Programmable frame integrity for wideband

channels

-40°C to +85°C

•

Automatic identiﬁcation of ST-BUS/GCI

interface backplanes

•

Per channel tristate control

Patented message mode

Description

The MT8985 Enhanced Digital Switch device is an

upgraded version of the popular MT8980D Digital

Switch (DX). It is pin compatible with the MT8980D

and retains all of the MT8980D's functionality. This

VLSI device is designed for switching PCM-encoded

voice or data, under microprocessor control, in digital

Non-multiplexed microprocessor interface

Single +5 volt supply

Available in DIP-40, PLCC-44 and QFP-44

packages

•

Pin compatible with MT8980 device

exchanges,

PBXs

and

any

ST-BUS/MVIP

environment. It provides simultaneous connections

for up to 256 64kb/s channels. Each of the eight

serial inputs and outputs consist of 32 64 kbit/s

channels multiplexed to form a 2048 kbit/s stream.

As the main function in switching applications, the

device provides per-channel selection between

variable or constant throughput delays. The constant

throughput delay feature allows grouped channels

such as ISDN H0 to be switched through the device

maintaining its sequence integrity. The MT8985 is

ideal for medium sized mixed voice/data switch and

voice processing applications.

Applications

•

Medium size digital switch matrices

Hyperchannel switching (e.g., ISDN H0)

™

ST-BUS/MVIP

interface functions

Serial bus control and monitoring

Centralized voice processing systems

Data multiplexer

ODE

F0i

C4i

Frame

Counter

Output

MUX

STo0

STo1

STo2

STo3

STo4

STo5

STo6

STo7

STi0

STi1

STi2

STi3

STi4

STi5

STi6

STi7

Parallel

Serial

Data

Memory

Serial

Parallel

Converter

Control Register

Control Interface

Converter

Connection

Memory

DS CS R/W A5/ DTA D7/

A0 D0

CSTo

Figure 1 - Functional Block Diagram

2-45

12 3 4 5 6 7...18

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与MT8985AE相关器件

型号	品牌	获取价格	描述	数据表
MT8985AE1	ZARLINK	获取价格	Enhanced Digital Switch
MT8985AL	MITEL	获取价格	CMOS ST-BUS⑩ FAMILY Enhanced Digital Switch
MT8985AL	ZARLINK	获取价格	Enhanced Digital Switch
MT8985AL1	ZARLINK	获取价格	Enhanced Digital Switch
MT8985AP	MITEL	获取价格	CMOS ST-BUS⑩ FAMILY Enhanced Digital Switch
MT8985AP	ZARLINK	获取价格	Enhanced Digital Switch
MT8985AP1	ZARLINK	获取价格	Enhanced Digital Switch
MT8985APR	ZARLINK	获取价格	Enhanced Digital Switch
MT8985APR1	ZARLINK	获取价格	Enhanced Digital Switch
MT8986	MITEL	获取价格	CMOS ST-BUS⑩ FAMILY Multiple Rate Digital Swi