Datasheet

943
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
Figure 41-6. Multi-buffer with Linked List Address for Source and Destination
If the user needs to execute a DMAC transfer where the source and destination address are contiguous but the
amount of data to be transferred is greater than the maximum buffer size DMAC_CTRLAx.BTSIZE, then this can
be achieved using the type of multi-buffer transfer as shown in Figure 41-7 on page 943.
Figure 41-7. Multi-buffer with Linked Address for Source and Destination Buffers are Contiguous
SADDR(2)
SADDR(1)
SADDR(0)
DADDR(2)
DADDR(1)
DADDR(0)
Buffer 2
Buffer 1
Buffer 0
Buffer 0
Buffer 1
Buffer 2
Address of
Source Layer
Address of
Destination Layer
Source Buffers Destination Buffers
SADDR(2)
SADDR(1)
SADDR(0)
DADDR(2)
DADDR(1)
DADDR(0)
Buffer 2
Buffer 1
Buffer 0
Buffer 0
Buffer 1
Buffer 2
Address of
Source Layer
Address of
Destination Layer
Source Buffers
Destination Buffers
SADDR(3)
Buffer 2
DADDR(3)
Buffer 2