METHOD AND APPARATUS FOR TIMING RECOVERY BASED ON THE DIFFERENCE BETWEEN THE EXPECTED AND THE MEASURED VALUE OF THE RECEIVED SIGNAL IN A POINT BETWEEN THE STROBE POINTS

摘要

A method of determining a phase error of an input signal. An input signal is received and sampled. A first value of the input signal is determined at a first instance of time, a second value of the input signal is determined at a second instance of time, and a third value of the input signal is determined at a third instance of time. The third instance of time is between the first and the second instances of time. A phase error of the input signal is determine, based on a comparison of the third value to a threshold value. The timing of the sampling is controlled to minimize the phase error.