An asynchronous circuit is described for processing units of data having a
program order associated therewith. The circuit includes an N-way-issue
resource comprising N parallel pipelines. Each pipeline is operable to
transmit a subset of the units of data in a first-in-first-out manner.
The asynchronous circuit is operable to sequentially control transmission
of the units of data in the pipelines such that the program order is
maintained.