Datasheet

144
Yes
No
Yes
Yes
Yes
Yes
No
No
No
No
Start

Initial settings
DTMR, DTCR, DTIAR, DTSAR, DTDAR

Transfer request
generated?

NMIF = AE = 0?
DTC vector read
Transfer information read

DTCRA = DTCRA – 1 (normal/block transfer mode)
DTCRAL = DTCRAL – 1 (repeat mode)
DTSAR, DTDAR update
DTCRB = DTCRB – 1 (block transfer mode)
Transfer (1 transfer unit)
Block
transfer mode and
DTCRB ≠ 0?
Transfer information write

NMI or address error

End
Transfer information write

CHNE = 0?
NMIF • NMIM
+ AE = 1?
When DISEL = 1 or DTCRA = 0 (normal/block transfer mode)
When DISEL = 1 (repeat transfer mode)

CPU interrupt request
Figure 8.2 DTC Operation Flowchart