LM3S5632 Luminary Micro, Inc, LM3S5632 Datasheet - Page 185
LM3S5632
Manufacturer Part Number
LM3S5632
Description
Lm3s5632 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S5632.pdf
(685 pages)
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Figure 9-3. Memory Scatter-Gather, Setup and Configuration
June 02, 2008
C
B
A
Source and Destination
NOTES:
1. Application has a need to copy data items from three separate location in memory into one combined buffer.
2. Application sets up uDMA “task list” in memory, which contains the pointers and control configuration for three
3. Application sets up the channel primary control structure to copy each task configuration, one at a time, to the
Buffer in Memory
uDMA copy “tasks.”
alternate control structure, where it will be executed by the uDMA controller.
16 WORDS (SRC B)
4 WORDS (SRC A)
1 WORD (SRC C)
16 (DEST B)
4 (DEST A)
1 (DEST C)
1
Task List in Memory
ITEMS=16
ITEMS=4
ITEMS=1
SRC
SRC
SRC
DST
DST
DST
2
Preliminary
“TASK” A
“TASK” B
“TASK” C
Table in Memory
Channel Control
ITEMS=12
ITEMS=n
SRC
DST
SRC
DST
3
LM3S5632 Microcontroller
Channel Primary
Control Structure
Channel Alternate
Control Structure
185
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