Apparatus and method for dynamic alignment of source synchronous bus signals

An apparatus that compensates for misalignment on a synchronous data bus, the apparatus comprising:

• a microprocessor, comprising:
• a replica distribution network, configured to receive a first signal, and configured to generate a second signal, wherein said replica distribution network comprises replicated propagation characteristics of a radial distribution network for a strobe;
• a bit lag control element, configured to measure a propagation time beginning with assertion of said first signal and ending with assertion of said second signal, and configured to generate a value on a lag bus that indicates said propagation time;
• and
• a synchronous lag receiver, coupled to said bit lag control element, configured to receive a first one of a plurality of radially distributed strobes and a data bit, and configured to delay registering of said data bit by said propagation time.

A method that compensates for misalignment on a synchronous data bus, the method comprising:

• measuring a propagation time beginning with assertion of a strobe and ending with assertion of a first one of a plurality of radially distributed strobes corresponding to the strobe;
• first generating a value that indicates the propagation time;
• and
• first receiving the first one of the plurality of radially distributed strobes and a data bit, and delaying registering of the data bit by the propagation time.