Data Sheet

AS3588A

Rev. 3.1

Page 1 of 15

July 1999

Key Features

n

n

8-Line x 32 PCM Channel Inputs

n

n

8-Line x 32 PCM Channel Output

n

n

256 Ports Non Blocking Time/Space Crosspoint

Switch

n

n

Single Power Supply of 5V

n

n

Low Power Consumption

n

n

Microprocessor Control Interface

n

n

Open Drain Serial Outputs

n

n

CMOS Process

n

n

Simultaneous Connection/Disconnection

under

Microprocessor Control

n

n

Extraction/Insertion of Single PCM Channels

n

n

Channel Zero Extraction

General Description

AS3588A is designed for switching PCM channels

under microprocessor control in digital exchanges,

PBX or Central Office equipment. It provides a non

blocking digital switching matrix for up to 256x256

64 kbit/sec channels.

Each of the eight serial inputs and outputs consists of

32 64 kbit/sec channels multiplexed to/from a 2048

kbit/sec serial PCM bit stream.

Simultaneously it allows its controlling microprocessor

to read PCM output channels or to write to PCM

output channels.

Ordering Information

Part Number

Package

AS3588AP

40 Pin DIP

AS3588AQ

44 QFP

Block Diagramme

INP PCM0

INP PCM1

INP PCM2

INP PCM3

INP PCM4

INP PCM5

INP PCM6

INP PCM7

DATA MEMORY

256 X 8

DIN

OUT PCM0

OUT PCM1

OUT PCM2

OUT PCM3

OUT PCM4

OUT PCM5

OUT PCM6

OUT PCM7

DOUT

AD

CONNECTION

MEMORY

256 X 9

S1

A2

S2

CS1 CS2

WR

RD

C/D

DR

RES

MICROPROCESSOR INTERFACE AND CONTROL LOGIC

SYNC

CLOCK

DOUT

DIN

CM

MUX

AD

PARALLEL

SERIAL

TO

CONVERTER

A1

D0......D7

DM MUX

OD

MUX

SERIAL

TO

PARALLEL

CONVERTER

TIME BASE

CHANNEL 0

EXTRACTION

LOGIC

Figure 1: Block Diagramme

DIGITAL TIME/SPACE

CROSSPOINT SWITCH

Austria Mikro Systeme International AG