DLL circuit with delay equal to one clock cycle

Details DLL circuit with delay equal to one clock cycle DLL circuit with delay equal to one clock cycle

2007-05-08

2007-05-08

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S156000, C327S159000, C375S376000, C331S017000

Reexamination Certificate

active

10942129

ABSTRACT:
A DLL circuit includes a phase comparator configured to compare timing between a first clock signal and a second clock signal, a delay circuit configured to delay the first clock signal for output as the second clock signal by a delay length responsive to a result of comparison by the phase comparator, and a control circuit configured to suspend supply of the first clock signal to the phase comparator temporarily while the second clock signal is supplied to the phase comparator.

REFERENCES:
patent: 6198689 (2001-03-01), Yamazaki et al.
patent: 6294938 (2001-09-01), Coddington et al.
patent: 6400643 (2002-06-01), Setogawa
patent: 6765976 (2004-07-01), Oh
patent: 6774679 (2004-08-01), Nogami
patent: 6839301 (2005-01-01), Lin et al.
patent: 2000-163963 (2000-06-01), None

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