Clocking some elements of a circuit with leading edges of clock pulses and others with trailing edges

摘要

A data processing circuit includes a first set of processing elements and a second set of processing elements. A clock provides common clocking signals to the processing elements, however, the first set of elements are clocked by rising edges of the clocking signals and the second set of elements are clocked by falling edges of the clocking signals. Circuitry is described for comparing the exponents of floating point numbers to enable normalisation.