1. A method for determining a skew of each data bit of a stream of encoded data words received by a receiver via a parallel interface from a transmitter comprising the steps of: (a) performing an error check and correction for each received and sampled encoded data word to calculate an error corrected encoded data word corresponding to the encoded data word transmitted by the transmitter; and (b) correlating the stream of received sampled encoded data words with error corrected encoded data words of current, previous and subsequent data transmissions to determine a skew of each data bit of said received encoded data word stream.