Patent ID: 9692401
Date: 2017-06-27
CPC Classifications: H03K

Claim:
1. A skew adjustment circuit comprising: a phase adjustment circuit that adjusts a phase of a first input clock based on a predetermined phase control signal, and outputs the adjusted first input dock as an output clock; a logical circuit that performs a logical operation between signals that are input; an integral circuit that generates a predetermined voltage signal based on a result of the logical operation by the logical circuit; a comparator that compares an electric potential of the predetermined voltage signal and an electric potential of a predetermined reference voltage signal; a phase adjustment amount controller that generates the predetermined phase control signal based on a result of the comparison by the comparator; and a controller that performs control to select a signal to be input to the logical circuit, wherein the controller, in a first mode, performs control such that the output clock and a second input clock are selected.