A circuit for data/clock deskewing includes a data delay circuit and a
clock circuit. The data delay circuit is arranged to select a delay for
the data signal responsive to a data delay signal. The clock circuit is
arranged to provide an even clock signal and an odd clock signal, and to
select one of them responsive to a clock select signal. Also, two delayed
versions of the selected clock signal are provided. The data latching
circuit is arranged to latch the delayed data signal with the selected
clock and with the two delayed versions of the selected clock signal.
Further, the latched data signals are employed to deskew the clock and
data signals such that set-up and hold times are substantially optimized
under jittery conditions.