System and method for clock detection with glitch rejection

Details System and method for clock detection with glitch rejection System and method for clock detection with glitch rejection

2008-04-01

2008-04-01

Cox, Cassandra (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By presence or absence pulse detection

C327S048000

Reexamination Certificate

active

07352214

ABSTRACT:
A system and a method are presented for detecting the presence of at least one clock signal of a defined clock frequency applied to at least one input port of an integrated circuit system, wherein the a first number M of clock pulses related to the at least one clock signal within a predefined cycle period is counted and the counted first number M of clock pulses is compared with a reference number. Depending on the result of the comparison the presence of the at least one clock signal is detected or not.

REFERENCES:
patent: 4197502 (1980-04-01), Sumner et al.
patent: 6008655 (1999-12-01), Kuroda

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