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 2003 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.

DSC-5716/4

MARCH 2003

3.3 VOLT TIME SLOT INTERCHANGE

DIGITAL SWITCH

128 x 128

IDT72V70180

FUNCTIONAL BLOCK DIAGRAM

RX0

RX1

RX2

RX3

ODE

F0i

CS

DS/

RD

R/

W/

WR

A0-A7

GND

DTA D8-D15/

AD0-AD7

TX0

TX1

TX2

TX3

AS/

ALE

IM

CLK

FE

IC

RESET

5716 drw01

Receive

Serial Data

Streams

Output

MUX

Loopback

Data Memory

Internal

Registers

Microprocessor Interface

Timing Unit

Connection

Memory

Transmit

Serial Data

Streams

FEATURES:

64-pin Small Thin Quad Flatpack (STQFP)

°°°°°C to +85°°°°°C

DESCRIPTION:

The IDT72V70180 is a non-blocking digital switch that has a capacity of

128 x 128 channels at 2.048 Mb/s. Some of the main features are: program-

mablestreamandchannelcontrol,ProcessorMode,inputoffsetdelayandhigh-

impedanceoutputcontrol.

Per-stream input delay control is provided for managing large multi-chip

switchesthattransportbothvoicechannelandconcatenateddatachannels.In

addition, input streams can be individually calibrated for input frame offset.