Datasheet

Table Of Contents
Section 7 DMA Controller (DMAC)
REJ09B0140-0900 Rev. 9.00 Page 161 of 846
Sep 16, 2010
H8S/2215 Group
Bit Bit Name Initial Value R/W Description
3
2
1
0
DTF3
DTF2
DTF1
DTF0
0
0
0
0
R/W
R/W
R/W
R/W
Data Transfer Factor
These bits select the data transfer factor (activation source).
In normal mode
0000: —
0001: —
0010: —
0011: —
010×: —
0110: Auto-request (cycle steal)
0111: Auto-request (burst)
1×××: —
In block transfer mode
0000: —
0001: Activated by A/D conversion end interrupt
0010: —
0011: Activated by DREQ signal’s low level input from USB
(USB request)
0100: Activated by SCI channel 0 transmission complete
interrupt
0101: Activated by SCI channel 0 reception complete
interrupt
0110: Activated by SCI channel 1 transmission complete
interrupt
0111: Activated by SCI channel 1 reception complete
interrupt
1000: Activated by TPU channel 0 compare match/input
capture A interrupt
1001: Activated by TPU channel 1 compare match/input
capture A interrupt
1010: Activated by TPU channel 2 compare match/input
capture A interrupt
1011: —
11××: —
The same factor can be selected for more than one channel.
In this case, activation starts with the highest-priority channel
according to the relative channel priorities. For relative
channel priorities, see section 7.4.10, DMAC Multi-Channel
Operation.
Legend: ×: Don’t care