A timing model incorporating the effect of crosstalk on delay and its application to optimal channel routing

  • Authors:
  • S. S. Sapatnekar

  • Affiliations:
  • Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN

  • Venue:
  • IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
  • Year:
  • 2006

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Abstract

Crosstalk is generally recognized as a major problem in integrated circuit design. This paper presents a novel approach to the efficient measurement of the effect of crosstalk on the delay of a net using an algorithm whose worst case complexity is polynomial-time in the number of nets. The cost of the algorithm is seen to be O(n log n) in practice, where n is the number of nets, and it is amenable to being incorporated into the inner loop of a timing optimizer. To illustrate this, the method is applied to reduce the effects of crosstalk in channel routing, where it is seen to give an average improvement of 23% in the delay in a channel as compared to the worst case, as measured by SPICE