DLL circuit and method of controlling the same

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing

Reexamination Certificate

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Details

C327S149000

Reexamination Certificate

active

07737746

ABSTRACT:
A delay locked loop (DLL) circuit includes an initial operation setting unit configured to generate an initial operation signal in response to a reference clock signal and an operation start signal; a shift register configured to generate a delay control code in response to the initial operation signal, a phase comparison signal, and an initial setting code; a delay line configured to delay the reference clock signal or a feedback clock signal in response to the initial operation signal and the delay control code, thereby generating a plurality of unit delay clock signals; and an initial delay monitoring unit configured to generate the initial setting code in response to the reference clock signal and the plurality of unit delay clock signals.

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