MT8981D Datasheet | Zarlink Semiconductor

Features - - - - - - - - Zarlink ST-BUS patible 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 m W 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° 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. C4i F0i 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 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. Data Sheet NC STi2 STi1 STi0 DTA IC ODE STo0 STo1 STo2 NC STi3 IC IC IC IC VDD .. F0i C4i A0 A1 A2 7 8 9 10 11 12 13 14 15 16 17 39 38 37 36 35 34 33 32 31 30 29 STo3 IC IC IC IC VSS D0 D1 D2 D3 D4 NC A3 A4 A5 DS R/W CS D7 D6 D5 NC DTA STi0 STi1 STi2 STi3 IC IC IC IC VDD F0i C4i A0 A1 A2 A3 A4 A5 DS...