Datasheet

Table Of Contents
Section 7 DMA Controller (DMAC)
Page 172 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
MAR, IOAR, and ETCR are always write-enabled regardless of the DMAWER settings. When
modifying these registers, the channel for which the modification is to be made should be halted.
7.4 Operation
7.4.1 Transfer Modes
Table 7.2 lists the DMAC modes.
Table 7.2 DMAC Transfer Modes
Transfer Mode Transfer Source Remarks
Short
address
mode
Dual
address
mode
(1) Sequential mode
(2) Idle mode
(3) Repeat Mode
TPU channel 0 to 2
compare match/input
capture A interrupts
SCI transmission
complete interrupt
SCI reception
complete interrupt
A/D conversion end
interrupt
Up to 4 channels can
operate
independently
(4) Normal mode
USB request
Auto-request
Full
address
mode
(5) Block transfer
mode
TPU channel 0 to 2
compare match/input
capture A interrupts
SCI transmission
complete interrupt
SCI reception
complete interrupt
A/D conversion end
interrupt
Max. 2-channel
operation, combining
channels A and B
With auto-request,
burst mode transfer
or cycle steal transfer
can be selected