one skilled in the art will appreciate the clk_in and clk_in_d signals are processed at the phase mixer block 57 which in fig2 comprises a single phase mixer 20 the phase mixer 20 is as described earlier in the background section by way of review depending on the number of pmcntr signals utilized n the phase difference between ina and inb can be further parsed to provide an output which intervenes between the two phases for example suppose clk_in 39 s phase is 0 degrees and clk_in_d 39 s phase is 30 degrees by virtue of tcud if n 5 then the phase of the signal emerging from the phase mixer 20 can be 0 degrees p 0 meaning none of the n control signals s lt x gt are activated i e k 0 6 degrees p 1 k 0 2 12 degrees p 2 k 0 4 18_degrees p 3 k 0 6 24 degrees p 4 k 0 8 or 30 degrees p 5 k 1 0 the phase mixer block 57 can comprise more than a single phase mixer 20 as shown in fig3 triple hierarchy and fig4 multiple hierarchy in so doing sets 59 see fig4 of phase mixers can be serially coupled to even further refine the phase of the output signal for example and referring briefly to fig3 were the outputs from phase mixers 16 and 18 at 18 and 24 degrees treatment at phase mixer.