Patent ID: 7924069
Filing Date: 2011-04-12
Classification: H03K,H03L

Abstract:
1. A multi-modulus divider (MMD) comprising: a chain of divide-by-⅔ cells, wherein each divide-by-⅔ cell of the chain receives an input signal and outputs an output signal, wherein each of the divide-by-⅔ cells responds to a modulus control signal that controls whether the divide-by-⅔ cell divides by two or divides by three; a sequential logic element, wherein a change in one of the modulus control signals causes the sequential logic element to be placed into a first state, and wherein a change in one of the output signals causes the sequential logic element to be placed into a second state, and further wherein the sequential logic element comprises an input lead and an output lead, wherein the sequential logic element outputs an MMD output signal onto the output lead, and wherein the MMD output signal has a duty cycle that is approximately 50/50; and a differential latch comprising a latch input lead and a latch output lead, the latch input lead being coupled to receive one of the modulus control signals, and wherein the latch output lead of the differential latch is coupled to the sequential logic element input lead.