Patent ID: 7428652
Filing Date: 2008-09-23
Classification: G06F

Abstract:
1. A method to support cross-communication between components in first and second clock domains having a clock frequency ratio that is a rational number, comprising: generating phase control signals during a plurality of primary cycles having a first number of phases; and generating phase control signals during an adjustment cycle having a second number of phases; repeating the generation of phase control signals in an overall cycle including the plurality of primary cycles and the adjustment cycle; and sending clocking signals between the first and second clock domains based on the phase control signals that are generated in combination with first and second clock signals respectively used for the first and second clock domains, wherein a clocking signal from the first to the second clock domain is launched at a rising edge of a cycle in the first clock domain and captured at a rising edge of a cycle in the second clock domain, the launching and capturing edges falling within a duration of a generated phase control signal.