Deskewing method for a physical layer interface on a multi-chip module

A method comprising:

• sampling, with first circuitry, a first local clock with a first global clock;
• generating, with second circuitry, phase-shifted versions of the first local clock in single unit interval step sizes;
• performing, with control logic, a sweep of phases of the first local clock in single unit interval step sizes until an edge transition of the first global clock is detected;
• adjusting a phase of the first local clock to meet setup and hold timing requirements for sampling a first data signal on a first lane of a plurality of lanes of a communication channel, responsive to detecting said edge transition;
• and
• sampling the first data signal using a phase-adjusted first local clock to generate a first data sequence.

A system comprising:

• a first functional unit;
• a channel with a plurality of communication lanes;
• a second functional unit coupled to the first functional unit via the channel,
• wherein the second functional unit conveys at least a first global clock and
• a first data signal to the first functional unit via a first lane of the channel;
• wherein the first functional unit is configured to:
• sample, with first circuitry, a first local clock with the first global clock;
• generate, with second circuitry, phase-shifted versions of the first local clock in single unit interval step sizes;
• perform, with control logic, a sweep of phases of the first local clock rn single unit interval step sizes until an edge transition of the first global clock is detected;
• adjust a phase of the first local clock to meet setup and hold timing requirements for sampling the first data signal, responsive to detecting said edge transition;
• and
• sample the first data signal using a phase-adjusted first local clock to generate a first data sequence.