Apparatus having corresponding methods and computer-readable media comprise: a phase detector configured to generate an error signal representing a phase difference between a recovered spread-spectrum clock signal and a serial data stream that includes a spread-spectrum clock signal; and a phase selector configured to provide the recovered spread-spectrum clock signal based on an error signal from a current spread-spectrum cycle of the spread-spectrum clock signal and an error signal from a previous spread-spectrum cycle of the spread-spectrum clock signal.