Techniques for adjusting periodic signals based on data detection

摘要

A circuit includes a phase detector circuit, a phase frequency detector circuit, a data detection circuit, a multiplexer circuit, and a clock signal generation circuit. The phase detector circuit is operable to generate a first phase detection signal based on a data signal and a first periodic signal. The phase frequency detector circuit is operable to generate a second phase detection signal based on second and third periodic signals. The data detection circuit is operable to generate a data detection signal based on the first phase detection signal. A multiplexer circuit is operable to provide one of the first and the second phase detection signals as a selected signal based on the data detection signal. The periodic signal generation circuit is operable to cause adjustments to phases of the first and the second periodic signals based on the selected signal.