Patent ID: 7071750
Filing Date: 2006-07-04
Classification: H03K,H03L

Abstract:
1. A method of phase splitting for generating multi-phase clocks having the same frequency and predetermined phase differences between one another, comprising: a plurality of reference clocks each generating an output of a first frequency having a first phase difference from other reference clocks; for each of the plurality of reference clocks, utilizing a plurality of periods in the output of a single reference clock to generate a plurality of output clocks each having a second frequency at a second phase difference from other output clocks generated by said single reference clock, each period of the second frequency being equal to the sum of the plurality of periods utilized in the output of said single reference clock wherein the first phase difference is a multiple of the second phase difference; determining a first reference period of a first reference clock of the plurality of reference clocks; finding a first reference period in a second reference clock of the plurality of reference clocks lagging the first reference period of the first reference clock; dividing the frequency of the first reference clock at a time point corresponding to the first reference period of the first reference clock in order to generate an output clock; and dividing the frequency of the second reference clock at a time point corresponding to the first reference period of the second reference clock in order to generate another output clock.