MT8985 Datasheet | Zarlink Semiconductor

Features - - - - - - - - 256 x 256 channel non-blocking switch Programmable frame integrity for wideband channels Automatic identification of ST-BUS/GCI interface backplanes Per channel tristate control Patented message mode microprocessor interface Single +5 volt supply Available in DIP-40, PLCC-44 and QFP-44 packages Pin patible with MT8980 device Ordering Information September 2005 .. - Non-multiplexed MT8985AE 40 Pin PDIP Tubes MT8985AP 44 Pin PLCC Tubes MT8985AL 44 Pin MQFP Trays MT8985APR 44 Pin PLCC Tape & Reel MT8985AP1 44 Pin PLCC- Tubes MT8985APR1 44 Pin PLCC- Tape & Reel MT8985AE1 40 Pin PDIP- Tubes MT8985AL1 44 Pin MQFP- Trays - Pb Free Matte Tin -40° C to +85 ° C Switch (DX). It is pin patible with the MT8980D and retains all of the MT8980D's functionality. This VLSI device is designed for switching PCM-encoded voice or data, under microprocessor control, in digital exchanges, PBXs and any ST-BUS/MVIP environment. It provides simultaneous connections for up to 256 64 kb/s channels. Each of the eight serial inputs and outputs consist of 32 64 kbit/s channels multiplexed to form a 2048 kbit/s stream. As the main function in switching applications, the device provides per-channel selection between variable or constant throughput delays. The constant throughput delay feature allows grouped channels such as ISDN H0 to be switched through the device maintaining its sequence integrity. The MT8985 is ideal for medium sized mixed voice/data switch and voice processing applications. Applications - - - - - - Medium size digital switch matrices Hyperchannel switching (e.g., ISDN H0) ST-BUS/MVIP™ interface functions Serial bus control and monitoring Centralized voice processing systems Data multiplexer Description The MT8985 Enhanced Digital Switch device is an upgraded version of the popular MT8980D Digital C4i F0i STi0 STi1 STi2 STi3 STi4 STi5 STi6 STi7 Serial to Parallel Converter Data Memory Frame Counter Output MUX Parallel to Serial...