NOTES:
1. Application has a need to copy data items from three separate locations in memory into one combined buffer.
2. Application sets up µDMA “task list” in memory, which contains the pointers and control configuration for three
µDMA copy “tasks.”
3. Application sets up the channel primary control structure to copy each task configuration, one at a time, to the
alternate control structure, where it is executed by the µDMA controller.
4. The SRC and DST pointers in the task list must point to the last location in the corresponding buffer.
C
4 WORDS (SRC A)
16 WORDS (SRC B)
SRC
DST
ITEMS=16
Unused
SRC
DST
ITEMS=1
1 WORD (SRC C)
4 (DEST A)
16 (DEST B)
1 (DEST C)
DST
A
B
“TASK” A
“TASK” B
“TASK” C
SRC
DST
ITEMS=12
SRC
DST
ITEMS=n
Task List in Memory
21 3
Source and Destination
Buffer in Memory
Channel Control
Table in Memory
Channel Primary
Control Structure
Channel Alternate
Control Structure
Unused
ITEMS=4
SRC
Unused
