Electronic Switch Architecture and Method having Multiple Ports Coupled by a Single Data Link for Transferring Different Data Types Across the Link
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United States of America Patent
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Issued Date -
Apr 17, 2008
app pub date -
Nov 30, 2006
filing date -
Oct 17, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A switch circuit, system, and method are provided in which a single, shared data line is formed across the majority of the monolithic substrate which bears the switch. The shared data line is serviced by multiplexers and corresponding state machines placed near the ports of the switch. The state machine determines which one of a plurality of data streams received on the corresponding ports are to be serviced and placed in a first timeslot of multiple timeslots sent across the shared data path. A multiplexer select input responds to the state machine output by forwarding the selected data stream for a duration set by a timer within the state machine. An arbiter within the corresponding state machine determines which port is to served first and which data is to be placed in the first timeslot, but also can prioritize based on user-defined rules. One such rule would be to service isochronous data before non-isochronous data, and to maintain the temporal relationship between associated streaming input of that isochronous data.
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