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Mechanism for providing octet alignment in serial ATM data stream

  • US 7,103,049 B2
  • Filed: 01/02/2002
  • Issued: 09/05/2006
  • Est. Priority Date: 01/02/2002
  • Status: Active Grant
First Claim
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1. For use with a receiver of a digital communication system, said receiver having a cell delineation mechanism that is operative, given knowledge of boundaries of respective bytes of an incoming serial data stream, to delineate respective cells of said serial data stream, a mechanism for locating said boundaries of respective bytes of said incoming serial data stream comprising:

  • a counter that is operative to count respective clock signals associated with said incoming serial data stream; and

    a synchronization signal derivation unit, coupled to said counter and being operative to generate an output signal in potential alignment with the boundary of a byte of said incoming serial data stream, in response to contents of said counter reaching a prescribed count value, and iteratively shifting, the time at which said output signal is produced relative to the counting operation of said counter, until said output signal is aligned with said boundary of a byte of said incoming serial data stream.

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