System and Method for Efficient Statistical Timing Analysis of Cycle Time Independent Tests

摘要

A method and a system performing selected timing comparisons in a digital electronic design includes propagating from signal sources to timing comparisons of one or multiple signal labels. The signal label includes signal source identifiers and signal path cycle adjust information. Timing comparisons are determined in which signal label values at each input of the timing comparison are required to compute the selected timing comparisons. The propagation back from the timing comparisons are needed signal labels, followed by the propagation and computing timing data from the signal source applied to the propagated signal labels corresponding to the required signal labels.

主权项

1) A method of statistical static timing analysis (SSTA) of a digital electronic design, comprising:
a) using a computer, propagating from at least one signal source to at least one at least one signal label, said at last one signal label comprising at least one of:
at least one signal source identifier, anda signal path cycle adjust information; b) determining at said timing test, which of said signal label values at each input of said timing test are needed to compute a selected timing test; c) propagating back from said timing test value needed flags; and d) propagating and computing timing data only for said signal labels wherein said value needed flag is set at true.