The present invention demonstrates a method and circuit where a plurality
of phase clocks from a "frequency lock only" PLL are used to sample an
input clock CLKIN. This results in a series of signals from which the
phase clock most in synchronization with CLKIN can be determined and
presented to the output CLKOUT. If used for data sampling, a phase clock
that lags the phase clock most in synchronization may be selected to
appear at CLKOUT. This guarantees that sampled data are static during
sampling. This system is less complex and consumes minimal power over
systems using variable delay circuits.