Clock synchronizing method and circuit varying a phase of a synchronous clock in one direction or the other according to a phase difference of the synchronous clock from a reference clock

摘要

A clock synchronizing method is provided. The clock synchronizing method includes the step of detecting a phase difference of a synchronous clock from a reference clock, and the step of varying a phase of the synchronous clock in one direction when the phase difference is not within a predetermined range, and varying the phase of the synchronous clock in one of the one direction and the other direction according to the phase difference when the phase difference is within the predetermined range.