Dynamic phase tracking using edge detection

A method of signal processing, said method comprising:

• selecting a set of samples from an oversampled portion of a data signal;
• detecting an absence of edges in the set of samples;
• determining a skew condition of the set of samples;
• obtaining a set of phase adjustment signals from a loop filter;
• and
• based on the set of phase adjustment signals, selecting a set of samples from a second oversampled portion of the data signal,
• wherein said obtaining a set of phase adjustment signals from a loop filter includes inhibiting a change of state of the loop filter based on said detecting an absence of edges.

A phase-locked loop comprising:

• a sample selector configured to select a set of samples from an oversampled portion of a data signal;
• a dynamic phase decision control configured to indicate whether a predetermined number of edges is present in the set of samples;
• and
• a phase detector configured to determine a skew condition of the set of samples based on the indication of the dynamic phase decision control.

A phase-locked loop comprising:

• an edge counter configured to indicate an absence of edges in a set of samples;
• and
• a loop filter configured to output at least one phase adjustment signal based on the set of samples,
• wherein a state change of the loop filter is inhibited according to the indication of the edge counter.