Patent ID: 7426251
Filing Date: 2008-09-16
Classification: H04J,H04L

Abstract:
1. A method for using a high speed transceiver to receive lower data rate transmissions, the method comprises: receiving a data stream at a first data transmission rate, wherein the data stream includes a unique alignment sequence and data, and wherein the first data transmission rate is less than a serial bit rate of the high speed transceiver; oversampling the unique alignment sequence and the data to produce an oversampled unique alignment sequence and oversampled data, respectively; comparing a portion of the oversampled unique alignment sequence with an expected oversampled partial alignment sequence; when the comparing the portion of the oversampled unique alignment sequence with the expected oversampled partial alignment sequence is favorable, determining one of a plurality of word alignments for the data stream based on the portion of the oversampled unique alignment sequence; recovering aligned data at the first data transmission rate from the oversampled data based on the one of the plurality of word alignments; monitoring the oversampled data for at least a partial clock correction sequence; when the at least a partial clock correction sequence is detected, determining whether clock correction of the oversampled data is required; and when the clock correction is required, adjusting at least one of reading and writing of the at least a partial clock correction sequence into an asynchronous buffer.