Device for checking the skew between two clock signals

Details Device for checking the skew between two clock signals Device for checking the skew between two clock signals

1994-09-19

1996-03-12

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

327 7, 327292, 371 1, 371 223, 375357, G01R 2500

Patent

active

054989833

ABSTRACT:
A device checks the skew between two clock signals among a plurality of clock signals having the same frequency. The two clock signals of each possible pair of clock signals respectively enable two successive flip-flops that are initially set at distinct states. The whole set of the flip-flops is connected in a looped shift register configuration. An alarm signal is provided by an Exclusive-OR gate receiving the outputs of two successive flip-flops of the shift register.

REFERENCES:
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patent: 4623805 (1986-11-01), Flora et al.
patent: 4646297 (1987-02-01), Palmquist et al.
patent: 5095454 (1992-03-01), Huang
patent: 5122679 (1992-06-01), Ishii et al.
patent: 5159279 (1992-10-01), Shenoi et al.
patent: 5309111 (1994-05-01), McNeely et al.
patent: 5313476 (1994-05-01), Haberkorn et al.
patent: 5371417 (1994-12-01), Mirov et al.
patent: 5381416 (1995-01-01), Vartti et al.
Wescon Conference Record, vol. 36, Nov., 1992, North Hollywood, CA, US.

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