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Abstract

A method and apparatus for capturing data. A first latch latches data from a data source in response to respective rising edge transitions of a first clock signal. A second latch latches data from the data source in response to respective falling edge transitions of the first clock signal. A delay circuit generates a second clock signal that lags the first clock signal by a delay period and, in response to respective transitions of the second clock signal, a multiplexer alternately selects the first latch and the second latch to output data to a storage element. A pulse strobe circuit strobes the output data into the storage element in response to the first clock signal and the second clock signal being in different states.

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First Claim