Fujitsu FR60 Hardware Manual page 541

■ Operation Flowchart for Burst Transfer
DENB=>0
Reload enable
Burst transfer
- Can be activated by all activation sources (selection).
- Can access all areas.
- The number of blocks can be set.
- Interrupt clear and the DMA interrupt are issued when transfer for the number of
times specified is completed.
Figure 16.4-2 Burst Transfer
DMA stop
DENB=1
Activation request
wait
Load the initial address,
transfer count, and
number of blocks
Calculate the address for
transfer source address access
Calculate the address for transfer
destination address access
Number of blocks - 1
BLK=0
Transfer count - 1
DTC=0
Write back the address,
transfer count, and number
of blocks
Interrupt clear
DMA transfer end
One-time access for fly-by
Only when the peripheral interrupt
activation source is selected
Interrupt cleared
DMA interrupted
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