Patent ID: 6891774

Claim:
An apparatus for providing a signal with an adjustable delay, comprising: a delay line, having an input adapted to receive the signal, and including a plurality of taps outputting delayed versions of the signal; a plurality of first stage multiplexers, the first stage multiplexers having inputs coupled to taps in the plurality of taps, and respectively providing signals from taps in the plurality of taps at respective first stage outputs selected in response to first stage control signals; a second stage multiplexer having inputs coupled to the first stage outputs from the plurality of first stage multiplexers, and providing a signal from a selected tap at a second stage output in response to second stage control signals; and logic generating the first and second stage control signals to select one of said plurality of taps as the selected tap, including, for all pairs of adjacent taps in the plurality of taps, logic to change the selected tap to the adjacent tap in the pair by switching only one of the first stage multiplexer or the second stage multiplexer.