Method and structure for use in static timing verification of sy

Details Method and structure for use in static timing verification of sy Method and structure for use in static timing verification of sy

1993-07-21

1996-11-26

Teska, Kevin J.

Boots, shoes, and leggings

364488, 364489, 364578, G06F 1700

Patent

active

055795102

ABSTRACT:
A universal synchronization element is used in a static timing verification system to represent selected combinational primitive elements, synchronous primitive elements and external primitive elements in the user's synchronous digital circuit. Each of these digital circuit element in a user's digital circuit design is represented by a corresponding universal synchronization element having a propagation time characteristic equivalent to the digital circuit element and a stable time characteristic equivalent to the digital circuit element. The propagation and stable time characteristics are defined in relation to a clock signal for the digital circuit element in the user's circuit that the universal synchronization element represents. The universal synchronization element does not a fixed timing relationship between the signals on its input and output terminals. The adjustment of stable interval starting and end times and the propagation interval starting and end times is sufficient to represent the timing characteristics of circuit element with the universal synchronization element of this invention.

REFERENCES:
patent: 5095454 (1992-03-01), Huang
patent: 5168455 (1992-12-01), Hooper
patent: 5191541 (1993-03-01), Landman et al.
patent: 5210700 (1993-05-01), Tom
patent: 5218551 (1993-06-01), Agrawal et al.
patent: 5278769 (1994-01-01), Bair et al.
patent: 5381524 (1995-01-01), Lewis et al.
patent: 5406497 (1995-04-01), Altheimer et al.

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