MT9085

® CMOS MT9085 PAC - Parallel Access Circuit Features Configurable for parallel-to-serial or serial-to-parallel conversion of 1024 channels Interfaces to Mitel’s MT9080 Switch Matrix Module (SMX). Generates all framing signals required in 1K or 2K switching applications Serial data rates of 2.048 Mbit/s or 4.096 Mbit/s Mitel ST-BUS ™ compatible serial inputs/outputs ISSUE 3 January 1993 Ordering Information MT9085AP 68 Pin PLCC -40°C to 70°C Description The MT9085 Parallel Access Circuit (PAC) provides an interface between an 8 bit, parallel time division multiplexed bus and a serial time division multiplexed bus. A single PAC device will accept data clocked out on the parallel bus of the Mitel MT9080 (SMX) and output it on 32/16 time division multiplexed serial bus streams. A second device can be configured to perform the conversion from the serial format into an SMX compatible parallel format. The time division, serial multiplexed streams may operate at 2.048 Mbit/s or at 4.096 Mbit/s. The PAC generates all framing signals required by the SMX for 1024 and 2048 channel configurations. Applications Interfacing the MT9080 Switch Matrix Module to an ST-BUS system Rate conversion between 4 Mbit/s and 2 Mbit/s serial streams Interfacing a parallel system bus to devices utilizing serial I/O S0 S1 S30 S31 Shift Registers Address Decoder C16 C4 LOAD C16 C4 Parallel/Serial P0 P7 C4i F0i C16i Timing Generation C2o C4o F0o D...