25.7.3.11 Single Trigger Block Transfer

The DMA provides the ability to perform a block transfer with a single start trigger as opposed to providing start triggers for each cell transfer. Setting the CHCTRLBk.CASTEN to 1 enables this function. This function is useful for memory to memory transfers. Note, the Cell Transfer Size still effects arbitration of port resources between channels in the same priority group. The user should specify a Cell Transfer Size that does not starve lower priority channels from port resources. See Channel Priorities for more details on arbitration.