Patent ID: 8923463

Claim:
A method, comprising: providing waveform edges associated with an asynchronous input to a receiver; wherein the waveform edges are densely distributed across an adjustment range; scanning at least a portion of the adjustment range for samples from the dense distribution of waveform edges at a first sample position of a first type for each of a plurality of sample positions of a second type different from the first type to obtain an error count for a sample count for each of the plurality of sample positions across at least the portion of the adjustment range; wherein the adjustment range is a unit interval; wherein the waveform edges are spaced-apart by a 1/16th or smaller fraction of the unit interval to provide the dense distribution thereof; wherein the first sample position is fixed; wherein a second sample position from the plurality of sample positions is moved across at least the portion of the adjustment range; wherein the scanning includes performing a plurality of sampling cycles for the sample count at each of the plurality of sample positions; locating a threshold bit error rate (“BER”) from the scanning; determining an amount and a direction of a sample offset at the threshold BER from a reference location; and adjusting either the first sample position or the second sample position responsive to the amount and the direction of the sample offset to at least reduce the sample offset.