Low latency comma detection and clock alignment

Details Low latency comma detection and clock alignment Low latency comma detection and clock alignment

2007-04-24

2007-04-24

Trujillo, James K. (Department: 2116)

Electrical computers and digital processing systems: support

Clock control of data processing system, component, or data...

C709S224000, C709S228000, C709S232000, C709S236000, C710S058000, C370S465000, C341S095000, C341S100000

Reexamination Certificate

active

10863374

ABSTRACT:
An Infiniband device can be provided. The device can comprise an input port having a serialiser/deserialiser. The serialiser/deserialiser can comprise: a data buffer for storing data from a received serial data stream and for outputting the stored data in parallel groups and a code detector for detecting a predetermined code pattern in the serial data stream and generating a code detection output in response thereto. The serialiser/deserialiser can also comprise a transition detector for detecting transitions in the serial data stream and reconstructing a serial data clock therefrom, and for generating a plurality of parallel data clocks from the serial data clock, each parallel data clock having a different phase. The data buffer can be responsive to the code detection output to adjust a parallel data group start position within the serial data stream and to cause a selection of one of the reduced frequency clocks having a phase corresponding to the adjusted parallel data group start position.

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Written Opinion of the International Search Authority for International Application No. PCT/US2005/016775, 5 pages.

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