Channel Paused

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

Document ID
UG1085
Release Date
2022-09-15
Revision
2.3 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. Once it is done with data transfer, the DMA channel goes into pause mode. The channel keeps the current operational state.