Patent ID: 7724855

Claim:
An event edge synchronization system, comprising: a first clock zone device configured to generate an event signal, based upon a first clock rate, to indicate an event has occurred; a second clock zone device configured to operate at a second clock rate, which is asynchronous with said first clock rate; and a synchronous notification subsystem configured to receive a clock input of a single clock rate from said second clock zone device, wherein said single clock rate is said second clock rate, receive said event signal from said first clock zone device, synchronize said event signal to said second clock rate based upon an edge transition of said event signal and said second clock rate, and generate a synchronous notification signal therefrom, said synchronous notification subsystem including: a first logic device configured to generate a first intermediate signal based upon said event signal and said single clock rate; a second logic device configured to generate a second intermediate signal based upon said first intermediate signal and said single clock rate; a third logic device configured to generate a third intermediate signal based upon said second intermediate signal and said single clock rate, wherein said third intermediate signal is not a complement of said second intermediate signal; and a comparison logic device configured to generate said synchronous notification signal based upon said second and third intermediate signals, wherein said first, second and third intermediate signals mimic a data input of said first, second and third logic devices at timing transitions of said single clock rate.