Ring-resister controlled DLL with fine delay line and direct...

Details Ring-resister controlled DLL with fine delay line and direct... Ring-resister controlled DLL with fine delay line and direct...

2005-07-19

2005-07-19

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S158000

Reexamination Certificate

active

06919745

ABSTRACT:
The present invention related to a ring-resister controlled DLL with fine delay line and a direct skew sensing detector, which is applicable to circuitry for compensating skew between external and internal clocks. The ring-register controlled delay locked loop according to the present invention comprises: a first delay group including a plurality of unit delay elements which are lineally coupled to each other for delaying an input clock signal; a second delay group including a plurality of unit delay elements which are circularly coupled to each other for delaying an output signal from the first delay group; a first control means for determining an amount of lineal delay in the first delay group; and a second control means for determining an amount of circular delay in the first delay group.

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Lee et al., “A Ring Register Controlled Delay Locked Loop,” The 8th Korean Conference on Semiconductors, Feb. 14, 2001, pp. 501-504.

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