DONE Field

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

Document ID
UG1085
Release Date
2022-09-15
Revision
2.3 English

1:

°Read From DPDMA. If this bit is set upon a read, the DPDMA considers this as an error condition (if the IGNR_DONE bit is not set) and generates an interrupt. This indicates that software fell behind the DPDMA and the DPDMA reached end of the chain unwillingly

°Write From DPDMA. The DPDMA writes a 1 to this bit after it is done processing the descriptor, if the descriptor update is requested.

°Software uses the LAST_DSCR to indicate an end of the task.

0: This bit is 0 when software writes to the descriptor. If the descriptor update is requested, the DPDMA updates the DONE and time stamp information.