Clock Distribution Network Architecture with Clock Skew Management

A method of controlling a digital system having first and second clock domains, the method comprising the steps of:

• distributing a reference clock to each of the first and second clock domains;
• generating a signal indicative of a phase difference between respective clock waveforms in the first and second clock domains based on the reference clock;
• and
• adjusting in accordance with the phase difference signal a delay element disposed on a path carrying the reference clock.

A digital system, comprising:

• a distribution network comprising a path to carry a reference clock and an adjustable delay element disposed along the path;
• a resonant clock domain coupled to the distribution network to receive the reference clock and comprising a clock generator to generate a resonant clock waveform from the reference clock;
• a non-resonant clock domain coupled to the distribution network to receive the reference clock and configured to be driven by a non-resonant clock waveform in accordance with the reference clock;
• a phase detector coupled to the resonant and non-resonant clock domains to generate a phase difference signal based on the resonant clock and non-resonant waveforms;
• and
• a control circuit coupled to the phase detector and configured to adjust the adjustable delay element based on the phase difference signal.