MT8981D 데이터 시트보기 (PDF) - Zarlink Semiconductor Inc
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MT8981D Datasheet PDF : 20 Pages
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Features
• 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
ISO-CMOS ST-BUSTM Family
MT8981D
Digital Switch
Data Sheet
February 2005
Ordering Information
MT8981DE 40 Pin PDIP
MT8981DP 44 Pin PLCC
MT8981DPR 44 Pin PLCC
MT8981DP1 44 Pin PLCC*
MT8981DPR1 44 Pin PLCC*
Tubes
Tubes
Tape & Reel
Tubes
Tape & Reel
*Pb Free Matte Tin
-40°C to +85°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.
STi0
STi1
Serial
to
STi2
Parallel
Converter
STi3
Data
Memory
C4i F0i
VDD VSS
Frame
Counter
Control Register
Control Interface
Output
MUX
Connection
Memory
ODE
Parallel
to
Serial
Converter
STo0
STo1
STo2
STo3
DS CS R/W A5/ DTA D7/
A0
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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