Patent ID: 6195630
Filing Date: 2001-02-27
Classification: G06F,Y10S

Abstract:
A computer-readable medium having stored therein computer-readable program codes that when executed cause a computer system to perform a computer implemented method of representing physical power consumption of a physical circuit within an integrated circuit, said method comprising the steps of:a) storing into a computer memory a plurality of first reference index values within a first reference index of a three dimensional lookup table, said plurality of first reference index values representing output load capacitances for a first output of a library cell representing said physical circuit;b) storing into said computer memory a plurality of second reference index values within a second reference index of said lookup table, said plurality of second reference index values representing output load capacitances for a second output of said library cell;c) storing into said computer memory a plurality of third reference index values in a third reference index of said lookup table, said plurality of third reference index values representing input transition times of an input signal received at an input of said library cell, wherein each distinct combination of a first reference index value, a second reference index value, and a third reference index value forms a distinct coordinate position within said lookup table; andd) storing into said computer memory a first plurality of reference power values computed based on a first power model of said physical circuit, wherein each distinct coordinate position of said lookup table receives a power reference value and wherein power reference values represent amounts of power physically dissipated by said physical circuit based on a transition of said first output under said first power model.