Patent ID: 7688928
Filing Date: 2010-03-30
Classification: H03L,H04L

Abstract:
1. A communication system comprising: a transmitter communicating a multiple-phase time-interleaved data with a predetermined data-symbol-rate with at least one receiver which includes a bank of data slicers and a data multiplexer coupled to a control unit; a first-PLL of the control unit to generate a set of un-calibrated multiple-phase signals of a first-clock each with a predetermined repetition rate of the first-clock-frequency; a second-PLL, a pulse generator, a pulse-width measurement unit and a phase calibration engine of the control unit to evaluate adjustments required in a temporal location of a logically critical voltage transition edge in each signal in the set of un-calibrated multiple-phase signals of the first-clock; and a phase adjustment unit of the control unit to adjust the temporal location of the logically critical voltage transition edge in each signal in the set of un-calibrated multiple-phase signals of the first-clock to generate a set of calibrated multiple-phase signals of the first-clock to control the bank of data slicers and the data multiplexer of the receiver such that each signal in the set of calibrated multiple-phase signals of the first-clock includes the logically critical voltage transition edge which is time skewed in a predetermined amount from the logically critical voltage transition edge in other signals in the same set within a predetermined accuracy.