Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
486
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
presents the DMAC transfer flow.
Figure 32-17. DMAC Transfer Flow for Linked List Source Address and Contiguous Destination Address
Channel enabled by
software
LLI Fetch
Hardware reprograms
SADDRx, CTRLAx,CTRLBx, DSCRx
DMAC buffer transfer
Writeback of control
information of LLI
Is DMAC in
Row 1 ?
Channel disabled by
hardware
Buffer Transfer Completed
Interrupt generated here
DMAC Chained Buffer Transfer
Completed Interrupt generated here
yes
no