VSC837

www.DataSheet4U.com VITESSE SEMICONDUCTOR CORPORATION Preliminary Data Sheet VSC837 Features 68 Input by 68 Output Crosspoint Switch 3.2Gb/s NRZ Data Bandwidth 66MHz Multi-Mode Programming Port TTL/2.5V CMOS Control I/O (3.3V tolerant) Programmable On-Chip I/O Termination Input Signal Activity (ISA) Monitoring Function Integrated Signal Equalization (ISE) for Deterministic Jitter Reduction 3.2Gb/s 68x68 Crosspoint Switch Single 2.5V Supply Differential CML Output Driver 11W typ/14W max (low drive mode) 13W typ/16W max (high drive mode) Hard and Soft Power-Down for Unused Channels High Performance 37.5mm, 480 TBGA Package General Description The VSC837 is a monolithic 68x68 asynchronous crosspoint switch, designed to carry broadband data streams. The non-blocking switch core is programmed through a triple-mode port interface that allows random access programming of each input/output port. A high degree of signal integrity is maintained throughout the chip via fully differential signal paths. The crosspoint function is based on a multiplexer array architecture. Each data output is driven by a 68:1 multiplexer that can be programmed to one and only one of its 68 inputs. The signal path is unregistered and fully asynchronous, so there are no restrictions on the phase, frequency, or signal pattern at each input. Each high-speed output is a fully differential switched current driver with switchable on-die terminations for maximum signal integrity. Data...