Title: Circuit, IC chip and method of detecting edge triggering false impulse in noise signal
Application Number: 200610144677 Application Date: 2006.11.14
Publication Number: 1976231 Publication Date: 2007.06.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03L7/08;H03L7/081;H03L7/18
Applicant(s) Name: IBM Address:
Inventor(s) Name: Carlile Paul S.;Green Barton E.;Jordan Richard C.;
Attorney & Agent: lide shan
Abstract:
    A phase- or frequency-locked loop circuit (200) that generates an accurate output signal (ACC_SYN_OUT) even in the presence of edge-triggering-type glitches ( 148, 304 A, 304 B) in the input reference clock signal (REF_CLK). The locked-loop circuit includes a phase or frequency difference detector (216) and a glitch detector (208) that generates a trigger signal (GLITCH_DETECTED) upon detection of at least one glitch. The trigger signal resets the difference detector so as to abort the updating of the output signal that the glitch would otherwise cause.
Time: 12
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