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MT8981DPR Datasheet

  • MT8981DPR

  • ISO-CMOS ST-BUS

  • 20頁

  • ZARLINK   ZARLINK

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ISO-CMOS ST-BUS
TM
Family
MT8981D
Digital Switch
Data Sheet
Features
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Zarlink ST-BUS compatible
4-line x 32-channel inputs
4-line x 32-channel outputs
128 ports non-blocking switch
Single power supply (+5 V)
Low power consumption: 30 mW Typ.
Microprocessor-control interface
Three-state serial outputs
Ordering Information
MT8981DE
40 Pin PDIP
MT8981DP
44 Pin PLCC
MT8981DPR
44 Pin PLCC
MT8981DP1 44 Pin PLCC*
MT8981DPR1 44 Pin PLCC*
*Pb Free Matte Tin
February 2005
Tubes
Tubes
Tape & Reel
Tubes
Tape & Reel
-40擄C to +85擄C
Description
This VLSI ISO-CMOS device is designed for switching
PCM-encoded voice or data, under microprocessor
control, in a modern digital exchange, PBX or Central
Office. It provides simultaneous connections for up to
128 64 kbit/s channels. Each of the four serial inputs
and outputs consist of 32 64 kbit/s channels
multiplexed to form a 2048 kbit/s ST-BUS stream. In
addition, the MT8981 provides microprocessor read
and write access to individual ST-BUS channels.
C4i
F0i
V
DD
V
SS
ODE
STi0
STi1
STi2
STi3
Serial
to
Parallel
Converter
Data
Memory
Frame
Counter
Output
MUX
Parallel
to
Serial
Converter
STo0
STo1
STo2
STo3
Control Register
Connection
Memory
Control Interface
DS CS
R/W A5/
A0
DTA D7/
D0
Figure 1 - Functional Block Diagram
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 1997-2005, Zarlink Semiconductor Inc. All Rights Reserved.

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