LM3S1607 Luminary Micro, Inc, LM3S1607 Datasheet - Page 184
LM3S1607
Manufacturer Part Number
LM3S1607
Description
Lm3s1607 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S1607.pdf
(548 pages)
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Micro Direct Memory Access (μDMA)
Figure 9-3. Memory Scatter-Gather, Setup and Configuration
184
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
Channel Primary
Control Structure
Channel Alternate
Control Structure
June 02, 2008
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