Description

The MT90866 Digital Switch provides switching capacities of 4,096 x 2,432 channels between backplane and local streams, 2,432 x 2,432 channels among local streams and 2,048 x 2,048 channels among backplane streams. The local connected serial inputs and outputs have 32, 64 and 128 64kb/s channels per frame with data rates of 2.048, 4.096 and 8.192Mb/s respectively. The backplane connected serial inputs and outputs have 128 and 256 64kb/s channels per frame with data rates of 8.192 and 16.384Mb/s respectively.

Features

• 3.3V operation with 5V tolerant inputs and I/O’s

• 2,432 x 2,432 channel non-blocking switching among local streams

• 4,096 x 2,432 channel blocking switching between backplane and local streams

• 2,048 x 2,048 channel non-blocking switching among backplane streams

• Rate conversion between backplane and local streams

• Rate conversion among local streams

• Backplane interface accepts data rates of 8.192Mb/s or 16.384Mb/s

• Local interface accepts data rates of 2.048Mb/s, 4.096Mb/s or 8.192Mb/s

• Sub-rate switching (2 or 4 bits) configuration for local streams at a data rate of 2.048Mb/s

• Per-channel variable or constant throughput delay

• Fully compliant to H.110 Timing specifications

• Automatic frame offset delay measurement for backplane streams

• Per-stream input frame delay offset, up to 128 bytes, programmable for local streams on a per quarter bit or per channel basis

• Per-stream output frame advancement, programmable for backplane and local streams

• Per-channel direction control for backplane streams

• Per-channel message mode for backplane and local streams

• Per-channel high impedance output control for backplane and local streams

• Pseudo-Random Binary Sequence (PRBS) pattern generation and testing for backplane and local streams

• 5V tolerant PCI driver on CT-Bus I/O’s

• Integrated PLL, compatible to Stratum 4 Enhanced clock switching standard

• Non-multiplexed microprocessor interface

• Connection memory block programming for fast device initialization

• Tristate-control outputs for external drivers

• Conform to the mandatory requirements of the IEEE-1149.1 (JTAG) standard

Applications

• Multi-service access platforms

• CTI applications

• Gateways, Integrated Access Devices

• ST-BUS and H.110 interface applications