Phase lock detector
Method and apparatus for phase lock detection is described. More particularly, a phase lock detection circuit (20) includes a synchronization circuit (23) coupled to receive a reference signal (31) and configured to provide a derivative signal (32). A phase lock detector (21) is coupled to receive the reference signal (31) and the derivative signal (32) and is configured to provide a cycle lock signal (24) indicating whether a phase lock exists within a lock window (57) for a clock cycle.
Xilinx, Inc.
H H
H03L H03L
inventional inventional
Qi Atul
Zhang Ghia