INTRA-PAIR SKEW CANCELLATION FOR DIFFERENTIAL SIGNALING

摘要

A method for deskewing a differential signal is provided. A common-mode voltage (VCM) of a differential signal (INP, INM) from a measuring circuit (304) and an average for the common- mode voltage of the differential signal (VCMA) from an averaging circuit (302) are measured. A difference between first and second portions of the differential signal (???-I??) is determined at amplifier (306) and deskew information (2*(VCM-VCMA)) is derived from the common- mode voltage and the average at amplifier (308). The deskew information can then be combined with the difference at summer (310) to deskew the differential signal.