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Method and system for speed negotiation for twisted pair links using intelligent E-FIFO in fibre channel systems

  • US 8,306,070 B2
  • Filed: 07/24/2006
  • Issued: 11/06/2012
  • Est. Priority Date: 12/02/2005
  • Status: Active Grant
First Claim
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1. In a fibre channel system comprising fibre channel host devices communicatively coupled via a twisted pair link, a method for handling data in a communication system, the method comprising:

  • determining a priority level based on amount of data in at least one elastic buffer communicatively coupled to at least one fibre channel host device;

    modifying said at least one elastic buffer based on said determined priority level; and

    communicating data synchronously between said fibre channel host devices communicatively coupled via said twisted pair link based on said modified elastic buffer, wherein a physical (PHY) layer block of one of said fibre channel host devices operates in a master mode, wherein another PHY layer block of another of said fibre channel host devices operates in a slave mode, wherein an elastic buffer corresponding to said master PHY layer block operates according to a reference clock, and wherein another elastic buffer corresponding to said slave PHY layer block operates according to a recovered clock.

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