Method and apparatus for source-synchronous capture using a first-in-first-out unit

A source-synchronous capture unit on a receiving circuit includes a first first-in-first-out (FIFO) unit operable to synchronize a write enable signal to generate a synchronized write enable signal that is synchronized with a first free running clock associated with a memory external to the receiving circuit. The write enable sign is generated in response to a read operation by the receiving circuit. The source-synchronous capture unit also includes a second FIFO unit operable to store data from the memory in response to the first free running clock and the synchronized write enable signal, and to output the data in response to a second free running clock associated with the receiving circuit and a read enable signal.