NSIP Law
Delay-locked loop (DLL) circuit apparatus and method for locking thereof
A DLL circuit apparatus and a DLL locking method are provided. A control signal voltage value corresponding to a DLL locking state is stored, and a DLL unlocking state is detected when a change in control signal voltage value or a phase difference of clock signals occurs. When the DLL unlocking occurs, the DLL is locked again using the stored control signal voltage value. Accordingly, DLL unlocking from DLL locking state is quickly detected, and a fast DLL locking time occurs.
MagnaChip Semiconductor, Ltd.
H H H G
H03L H03L H03L G11C
inventional inventional inventional additional
Jung Hyun
Kim