at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 284

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

Figure 24-6. Multi-Block with Linked List Address for Source and Destination
6249D–ATARM–20-Dec-07
Source Layer
Address of
If the user needs to execute a DMA transfer where the source and destination address are con-
tiguous but the amount of data to be transferred is greater than the maximum block size
DMAC_CTLx.BLOCK_TS, then this can be achieved using the type of multi-block transfer as
shown in
SAR(2)
SAR(1)
SAR(0)
matically reprograms the DMAC_SARx, DMAC_DARx, DMAC_LLPx and DMAC_CTLx
channel registers. The DMA transfer continues until the DMAC determines that the
DMAC_CTLx and DMAC_LLPx registers at the end of a block transfer match that
described in Row 1 of
ous block transferred was the last block in the DMA transfer. The DMA transfer might
look like that shown in
Figure 24-7 on page
Source Blocks
Block 1
Block 2
Block 0
Table 24-2 on page
Figure 24-6 on page
285.
DAR(2)
DAR(1)
DAR(0)
AT91SAM9263 Preliminary
Destination Blocks
278. The DMAC then knows that the previ-
284.
Block 1
Block 2
Block 0
Destination Layer
Address of
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