Description

The High-Speed Isochronous Multiplexer integrated circuit multiplexes up to eight Serial Telecom (ST-BUS) links onto a single 20 MHz loop to facilitate point-to-point data transport requirements. The MT90710 connects easily with standard Fiber Optic interfaces to form a complete electric to photonic conversion circuit. Optical transmission allows large bandwidth inter-shelf or, in distributed systems, inter-node communication by eliminating multiple data buses, cable inter-connect and attendant driver interfaces. The final result is a simple physical interface free of the radiated emissions and background noise susceptibility problems encountered in copper-wired environments.

Features

• Multiplexes eight 2.048 Mbit/s, ST-BUS links onto one serial high-speed 20.48 Mbit/s link

• 15.808 Mbit/s clear bandwidth transport

• Two 8 kbit/s and one 32 kbit/s oversampled signalling channels

• Embedded system timing and frame synchronization

• Frame buffer control signals generated on-chip

• Check-sum generated on multiplexed frame

• Remote synchronization indication

• Both master and slave timing mode operation

• On-chip reference generation for slave mode synchronization

• 4B/5B data encoding/decoding

Applications

• Fibre distributed sytems

• Backplane concentrators

• Local Area Networks (LANs)