Method and apparatus for locating critical speed paths in integr

Details Method and apparatus for locating critical speed paths in integr Method and apparatus for locating critical speed paths in integr

1996-12-30

2000-06-06

Teska, Kevin J.

Boots, shoes, and leggings

364489, 364488, G06F 1700, G06F 1750

Patent

active

060710039

ABSTRACT:
A method and apparatus for locating a critical speed path in an integrated circuit. The operating frequency of the integrated circuit is increased until a logic error occurs in the integrated circuit. The propagation time of one clock signal within a circuit subblock of the integrated circuit is then increased until the logic error is eliminated. The propagation time of the clock signal is increased by enabling a delay circuit comprising a capacitor coupled to the clock signal. Another embodiment of the clock signal comprises a circuit that introduces contention on the clock signal line.

REFERENCES:
patent: 5095454 (1992-03-01), Huang
patent: 5455931 (1995-10-01), Camporese et al.
patent: 5489864 (1996-02-01), Ashuri
patent: 5497263 (1996-03-01), Masuda et al.
patent: 5652530 (1997-07-01), Ashuri
patent: 5699003 (1997-12-01), Saeki
patent: 5705942 (1998-01-01), Ashuri

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