The Status Interface of a DataMover is designed to allow for status queuing corresponding to the available command queuing on the Command Interface. The status values are “queued” in a FIFO.
The Status FIFO is by default a synchronous FIFO using the same clock as the memory mapped interface of the associated DataMover element. However, you can specify an asynchronous Command/Status Interface FIFO. This allows the command and status interfaces to be clocked at a different (generally much slower) frequency than the associated memory-mapped interface.