STATIC DELAY ANALYSIS PROCESSING METHOD, STATIC DELAY ANALYSIS PROCESSING PROGRAM RECORD MEDIUM AND STATIC DELAY ANALYSIS PROCESSING PROGRAM

摘要

PROBLEM TO BE SOLVED: To suppress a sharp increase in processing time of a static delay analysis for a circuit while making it possible to perform an exact delay calculation.;SOLUTION: A group of a pair of time and slew comprising the pair of arrival time and the slew for an output signal of each node is calculated in a topological sequence from an external input end and the group of the pair of the time and the slew in the input signal of an ensuing node is calculated from the group of the pair of the time and the slew of its output signal. A plural pairs of the time and the slew in every input or output of the each node is saved as such, and the timing analysis is executed based on the pair of the time and the slew. And, execution time of the delay analysis can be reduced by deleting the pair of the time and the slew in the group of the pairs of the time and the slew in the input or output of the each node which does not affect the delay analysis or does it to a small extent.;COPYRIGHT: (C)2002,JPO