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Device and system for adjusting delay in a data path based on comparison of data from a latch and data from a register

  • US 6,845,460 B2
  • Filed: 01/30/2004
  • Issued: 01/18/2005
  • Est. Priority Date: 11/09/2000
  • Status: Expired due to Fees
First Claim
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1. A device, comprising:

  • a functional circuit, said functional circuit comprising;

    a logic circuit; and

    a variable delay; and

    a latch;

    wherein said variable delay is coupled to receive input from a data path and coupled to provide output to the latch; and

    said latch is coupled to receive input from the variable delay and provide input to said logic circuit; and

    a control circuit, said control circuit comprising;

    a register;

    a repeater;

    a comparator; and

    a command detector;

    wherein said register is coupled to receive input from a first external source and coupled to provide output to said repeater and said comparator;

    said repeater is coupled to receive input from said register and said command detector and to provide output to a second external source;

    said command detector is coupled to receive input from said second external source and to provide output to said repeater and said comparator; and

    said comparator is coupled to receive input from said latch of said functional circuit and said register and provide output to control said variable delay.

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