LM3S5762 Datasheet, PDF(298/841 Page) Texas Instruments – Stellaris® LM3S5762 Microcontroller

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LM3S5762 Datasheet, PDF (298/841 Pages) Texas Instruments – Stellaris® LM3S5762 Microcontroller

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Micro Direct Memory Access (Î¼DMA)

Figure 8-4. Memory Scatter-Gather, Î¼DMA Copy Sequence

Task List

in Memory

Î¼DMA Control Table

in Memory

TASK A

TASK B

TASK C

SRC

DST

PRI

COPIED

SRC

ALT

DST

Buffers

in Memory

SRC A

SRC B

SRC C

DEST A

DEST B

DEST C

COPIED

Using the channelâs primary control structure, the Î¼DMA

controller copies task A configuration to the channelâs

alternate control structure.

Then, using the channelâs alternate control structure, the

Î¼DMA controller copies data from the source buffer A to

the destination buffer.

Task List

in Memory

Î¼DMA Control Table

in Memory

Buffers

in Memory

TASK A

TASK B

TASK C

SRC

DST

PRI

COPIED

SRC

ALT

DST

SRC A

SRC B

SRC C

DEST A

DEST B

DEST C

COPIED

Using the channelâs primary control structure, the Î¼DMA

controller copies task B configuration to the channelâs

alternate control structure.

Then, using the channelâs alternate control structure, the

Î¼DMA controller copies data from the source buffer B to

the destination buffer.

Task List

in Memory

Î¼DMA Control Table

in Memory

Buffers

in Memory

TASK A

TASK B

TASK C

SRC

DST

PRI

COPIED

ALT

Using the channelâs primary control structure, the Î¼DMA

controller copies task C configuration to the channelâs

alternate control structure.

SRC A

SRC B

SRC

SRC C

DST

DEST A

COPIED

DEST B

DEST C

Then, using the channelâs alternate control structure, the

Î¼DMA controller copies data from the source buffer C to

the destination buffer.

298

November 17, 2011

Texas Instruments-Production Data

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