Texas Instruments SimpleLink CC2620 Technical Reference Manual page 1048

Functional Description
Figure 12-3. Memory Scatter-gather, Setup, and Configuration
1
Source and destination
buffer in memory
4 words (SRC A)
A
16 words (SRC B)
B
1 words (SRC C)
C
4 (DEST A)
16 (DEST B)
1 (DEST C)
(1) The application has a need to copy data items from three separate locations in memory into one combined
buffer.
(2) The application sets up µDMA "task list" in memory, which contains the pointers and control configuration for
three µDMA copy "tasks."
(3) The 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.
1048
Micro Direct Memory Access (µDMA)
2
Task list in memory
SRC
DST
Task A
ITEMS=4
Unused
SRC
DST
Task B
ITEMS=16
Unused
SRC
DST
Task C
ITEMS=1
Unused
Copyright © 2015, Texas Instruments Incorporated
3
Channel control
table in memory
SRC
DST
ITEMS=12
SRC
DST
ITEMS=n
SWCU117C – February 2015 – Revised September 2015
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Channel primary
control structure
Channel alternate
control structure