MT8980D Datasheet, PDF (1/20 Pages) Zarlink Semiconductor Inc – ISO-CMOS ST-BUS Family Digital Switch

Features
• Zarlink ST-BUS compatible
• 8-line x 32-channel inputs
• 8-line x 32-channel outputs
• 256 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-BUS^TM Family
MT8980D
Digital Switch
Data Sheet
February 2005
Ordering Information
MT8980DE
MT8980DP
MT8980DPR
MT8980DP1
MT8980DE1
MT8980DPR1
40 Pin PDIP
44 Pin PLCC
44 Pin PLCC
44 Pin PLCC*
40 Pin PDIP*
44 Pin PLCC*
*Pb Free Matte Tin
Tubes
Tubes
Tape & Reel
Tubes
Tubes
Tape & Reel
-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
256 64 kbit/s channels. Each of the eight serial inputs
and outputs consist of 32 64 kbit/s channels
multiplexed to form a 2048 kbit/s ST-BUS stream. In
addition, the MT8980 provides microprocessor read
and write access to individual ST-BUS channels.
STi0
STi1
STi2
STi3
STi4
STi5
STi6
STi7
Serial
to
Parallel
Converter
Data
Memory
C4i F0i
V_DD V_SS
Frame
Counter
Control Register
Control Interface
Output
MUX
Connection
Memory
ODE
Parallel
to
Serial
Converter
STo0
STo1
STo2
STo3
STo4
STo5
STo6
STo7
DS CS R/W A5/ DTA D7/
A0
D0
CSTo
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.