MT8985AP1 Zarlink Semiconductor, Inc., MT8985AP1 Datasheet

MT8985AP1

Manufacturer Part Number

MT8985AP1

Description

256 x 256 Channels (8 TDM Streams at 2.048 Mbps) Non-blocking Enhance Digital Switch (EDX) with Constant Delay Mode

Manufacturer

Zarlink Semiconductor, Inc.

Datasheet

1.MT8985AP1.pdf (26 pages)

Current page: 1 of 26
Download datasheet (598Kb)

Features

•

Applications

•

STi0

STi1

STi2

STi3

STi4

STi5

STi6

STi7

256 x 256 channel non-blocking switch

Programmable frame integrity for wideband

channels

Automatic identiﬁcation of ST-BUS/GCI

interface backplanes

Per channel tristate control

Patented message mode

Non-multiplexed microprocessor interface

Single +5 volt supply

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

packages

Pin compatible with MT8980 device

Medium size digital switch matrices

Hyperchannel switching (e.g., ISDN H0)

ST-BUS/MVIP

Serial bus control and monitoring

Centralized voice processing systems

Data multiplexer

Converter

Parallel

Serial

™

interface functions

Memory

Data

Figure 1 - Functional Block Diagram

C4i

Counter

Frame

CS R/W A5/

Control Register

Control Interface

F0i

DS5408

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

exchanges,

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.

CMOS ST-BUS  FAMILY

DTA D7/

MT8985AE

MT8985AP

MT8985AL

Connection

PBXs

Memory

CSTo

Output

MUX

Enhanced Digital Switch

Ordering Information

-40 ° C to +85 ° C

40 Pin Plastic DIP

44 Pin PLCC

44 Pin QFP

and

ISSUE 5

Converter

any

Parallel

Serial

ODE

MT8985

ST-BUS/MVIP

March 1997

STo0

STo1

STo2

STo3

STo4

STo5

STo6

STo7

2-45

Related parts for MT8985AP1

Related keywords

MT8985AP1 datasheet
MT8985AP1 data sheet
MT8985AP1 pdf datasheet
MT8985AP1 component
MT8985AP1 part
MT8985AP1 distributor
MT8985AP1 RoHS
MT8985AP1 datasheet download