Patent ID: 8595537
Filing Date: 2013-11-26
Classification: H03L

Abstract:
1. A method for operating a looked loop, the method comprising: operating the locked loop in a mode specifying incrementally increasing a length of a delay imposed by a delay line used to generate an output clock signal from an input clock signal; incrementally increasing the length of the delay imposed by the delay line; exiting the mode specifying incrementally increasing the length of delay responsive to a comparison between a feedback clock signal and a reference clock signal indicating a predetermined phase relationship, the feedback signal generated based on the output clock signal; reducing the length of the delay responsive to exiting the mode specifying incrementally increasing the length of the delay; and after reducing the length of the delay, adjusting the length of the delay of the delay line until the feedback clock signal generated with the length of the delay and the reference clock signal have the predetermined phase relationship.