A clock generator circuit for providing a clock signal to a dual-edged D-type flip-flop, enabling the flip-flop to be dual edged, single edged, or to enable a user to provide clock edge selection, asynchronous clocking, clock enabling, or a mixture of different type clock signals. The clock...http://www.google.es/patents/US5719516?utm_source=gb-gplus-sharePatente US5719516 - Lock generator circuit for use with a dual edge register that provides a separate enable for each use of an input clock signal
Lock generator circuit for use with a dual edge register that provides a ...