Pll circuit with masked phase error signal

摘要

In a PLL circuit having a phase comparator for detecting a phase difference between a reference signal having a predetermined frequency or a reproduction signal having signal change points at irregular time intervals and a signal to be compared and outputting a phase error signal, a mask circuit controls to transmit or block at least part or all of the phase error signal in accordance with the reference signal or the reproduction signal, an output different from the phase error signal from the phase comparator, and the signal to be compared. <IMAGE>