Method and apparatus for pre-clocking

1. An apparatus comprising:

means for receiving an input;

means for receiving a first clock;

means for generating a second clock based on said first clock;

means for generating a third clock based on said second clock;

means for comparing said first clock with said third clock; and

means for capturing said input by using said second clock.

2. The apparatus of claim 1 wherein:

said means for generating said second clock further comprises means for delaying said first clock; and

said means for generating said third clock further comprises means for delaying said second clock.

3. The apparatus of claim 2 wherein said means for delaying said first clock further comprises means for adjusting said delaying.

4. The apparatus of claim 3 wherein said comparing further comprises controlling said means for adjusting said delaying so that said first clock and said third clock are at a substantially fixed phase relationship.

5. The apparatus of claim 4 wherein said substantially fixed phase relationship is substantially zero phase relationship.