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Texas Instruments has its first 0- to 4Gbit/s data buffer/signal conditioner with a dual multiplexer.

 

The SN65LVCP40 is designed for upgrading 1Gbit/s copmms systems to 4Gbit/s without redesigning...

Texas Instruments has its first 0- to 4Gbit/s data buffer/signal conditioner with a dual multiplexer.

 

The SN65LVCP40 is designed for upgrading 1Gbit/s copmms systems to 4Gbit/s without redesigning the backplane.

 

The device supports high-speed networking standards such as XAUI, Gigabit Ethernet, FibreChannel and InfiniBand and can also be applied as a link replicator or data redundancy switch in backplanes.

 

The device provides four selectable levels of output pre-emphasis on the drivers so that performance can be optimised to particular trace or cable lengths. Receiver equalisation on the inputs reduces jitter, which is measured at 90psec at input, to as low as 30psec at output.

 

This means that the equaliser will compensate for intersymbol interference (ISI) effects inherent in transmission of data over longer distances. The equalisation is optimised to compensate for a FR-4 backplane trace with 5dB, high-frequency loss between 375MHz and 1.875MHz, which corresponds to a 20in. long FR-4 trace with 8-mil trace width.

 

It combines a pair of 1:2 buffers with a pair of 2:1 serial multiplexers and incorporates a selectable switch-side loopback that supports system testing. 

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