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System and method for correlated process pessimism removal for static timing analysis

  • US 7,117,466 B2
  • Filed: 09/18/2003
  • Issued: 10/03/2006
  • Est. Priority Date: 09/18/2003
  • Status: Expired due to Fees
First Claim
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1. A method for performing static timing analysis of a digital system in the presence of a plurality of global sources of delay variation comprising the steps of:

  • a) selecting, for at least one timing test, at least one pair of an early path and a late path leading to said timing test;

    b) identifying at least one global parameter which the delays of said early and late paths depend on, and identifying parameters in which delay functions are separable;

    c) determining for at least one of said global parameters at least one consistent value assignment, and setting independently each of said parameters in which delay function are separable from a value that results in a worst slack value at said timing test; and

    d) computing for each said consistent assignment a slack value for said path pair.

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