Description
The MT90823 Large Digital Switch has a non-blocking switch capacity of: 2,048 x 2,048 channels at a serial bit rate of 8.192 Mb/s; 1,024 x 1,024 channels at 4.096 Mb/s; and 512 x 512 channels at 2.048 Mb/s. The device has many features that are programmable on a per stream or per channel basis, including message mode, input offset delay and high impedance output control.

Features
• 2,048 × 2,048 channel non-blocking switching at 8.192 Mb/s
• Per-channel variable or constant throughput delay
• Automatic identification of ST-BUS/GCI interfaces
• Accept ST-BUS streams of 2.048, 4.096 or 8.192 Mb/s
• Automatic frame offset delay measurement
• Per-stream frame delay offset programming
• Per-channel high impedance output control
• Per-channel message mode
• Control interface compatible to Motorola nonmultiplexed CPUs
• Connection memory block programming
• 3.3 V local I/O with 5 V tolerant inputs and TTLcompatible outputs
• IEEE-1149.1 (JTAG) Test Port

Applications
• Medium and large switching platforms
• CTI application
• Voice/data multiplexer
• Digital cross connects
• ST-BUS/GCI interface functions
• Support IEEE 802.9a standard