US Patent 7253661 Method and apparatus for a configurable latch

A configurable latch is implemented using a configurable pulse generator and a level sensitive (LS) latch. The configurable pulse generator produces either a pulse signal that is aligned with the input clock edge, or simply provides the input clock signal to its output in response to a pulse generator control signal. If a pulse signal is provided to the latch, then edge triggered (ET) latch operation is effected within the latch. If, on the other hand, a clock signal is provided to the latch, then LS latch operation is effected within the latch. Thus, configuration of latch operation is established in response to the type of clock signal that is provided to the latch.