Source/Destination Stop

The SSTP and DSTP bits determine whether or not to disable the hardware triggers (SIRQEN = 0), once a DMA message has completed.

When the SSTP bit is set and the DMAnSCNT = 0, then the SIRQEN bit will be cleared. Similarly, when the DSTP bit is set and the DMAnDCNT = 0, the SIRQEN bit will be cleared.

Important: The SSTP and DSTP bits are independent functions and do not depend on each other. It is possible for a message to be stopped by either counter at message end or both counters at message end.