SYSTEM AND METHOD FOR EFFICIENT STATISTICAL TIMING ANALYSIS OF CYCLE TIME INDEPENDENT TESTS

摘要

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 system for statistical static timing analysis (SSTA) of a digital electronic design, the computer program product comprising:
one or more computer processors, one or more computer-readable storage media, and program instructions stored on the one or more computer-readable storage media for execution by at least one of the one or more computer processors, the program instructions comprising: program instruction to propagate, using a computer, a signal label from a signal source to a cycle time dependent timing test, the signal label comprising at least one of:
a signal source identifier, anda signal path cycle adjust information; program instructions to identify, at each input of the cycle time dependent timing test, which timing values of the signal label are needed to compute a downstream cycle time independent timing test; program instruction to propagate back from the cycle time dependent timing test to the signal source a flag indicating the identified timing values of the signal label needed to compute the downstream cycle time independent timing test; and program instruction to compute timing data only for the identified values of the signal label which are needed to compute the downstream cycle time independent timing test.