Patent ID: 7672416
Filing Date: 2010-03-02
Classification: H04L

Abstract:
1. A communication device comprising: a receiver operable with an unlocked sampling clock; and a data recovery module configured to detect transition edges in data signal samples generated by the receiver using the unlocked sampling clock, and to determine from the detected edges a sampling point for use in recovery of the associated data; wherein the data recovery module is further configured to provide adjustment in the sampling point in the presence of transition edge variations attributable to the unlocked sampling clock; and wherein the data recovery module further comprises: a window register for storing a designated number of the data signal samples; a plurality of phase edge counters receiving respective sets of samples from the window register, each counting edges for a designated bit position; control circuitry coupled to the phase edge counters and identifying from their respective counts a particular phase; and a data bit buffer for outputting one or more data bits responsive to the particular phase.