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7.4.13
Forced Termination of DMAC Operation
If the DTE bit for the channel currently operating is cleared to 0, the DMAC stops on completion
of the 1-byte or 1-word transfer in progress. DMAC operation resumes when the DTE bit is set to
1 again. In full address mode, the same applies to the DTME bit. Figure 7.24 shows the procedure
for forcibly terminating DMAC operation by software.
Forced termination
of DMAC
Clear DTE bit to 0
Forced termination
Figure 7.24 Example of Procedure for Forcibly Terminating DMAC Operation
7.4.14
Clearing Full Address Mode
Figure 7.25 shows the procedure for releasing and initializing a channel designated for full address
mode. After full address mode has been cleared, the channel can be set to another transfer mode
using the appropriate setting procedure.
[1] Clear the DTE bit in DMABCRL to 0.
If you want to prevent interrupt generation after
forced termination of DMAC operation, clear the
DTIE bit to 0 at the same time.
[1]
Rev. 3.0, 10/02, page 189 of 686
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