Channel Pause

Versal ACAP Technical Reference Manual (AM011)

Document ID
AM011
Release Date
2022-04-26
Revision
1.4 English

The software can pause any channel by setting the scatter-gather descriptor command bits to pause. This feature is used to pause the DMA operation and program the next set of descriptors.

  • Current DSCR indicates CMD = Pause

If the current descriptor command bits indicates a pause, the DMA channel completes the current descriptor payload to the DST locations. After it is done with data transfer, the DMA channel goes into pause mode. The channel keeps the current operational state.