US Patent 7940813 Demultiplexing digital data into a 3X mode

An apparatus and method for demultiplexing sampled data at a first data rate on a data line using a non-standard demultiplex mode is achieved by first demultiplexing the sampled data using a standard, factor of two, demultiplex mode, to produce n data lines at 1/n time the first data rate, and then down-converting n data lines to m data lines at 1/m times the first data rate to produce the non-standard demultiplex mode. As a specific example sampled data is demultiplexed using a standard 4× mode and then converted to a non-standard 3× mode.