1.CSU DMA done can be verified by polling the done bit of the status register.
a.To poll the source channel:
Poll while the csudma.csudma_src_i_sts[done] is not set.
b.Else,
Poll while the csudma.csudma_dst_i_sts[done] is not set.
DMA done can be acknowledge by clearing the same bit of the status register.
This Figure describes a CSU DMA transfer.
