Datasheet

Section 7 DMA Controller (DMAC)
Page 330 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Bit Bit Name Initial Value R/W Description
5 RPE 0 R/W Repeat Enable
Used in combination with the DTIE bit in DMABCR
to select the mode (sequential, idle, or repeat) in
which transfer is to be performed.
• When DTIE = 0 (no transfer end interrupt)
0: Transfer in sequential mode
1: Transfer in repeat mode
• When DTIE = 1 (with transfer end interrupt)
0: Transfer in sequential mode
1: Transfer in idle mode
4 DTDIR 0 R/W Data Transfer Direction
Used in combination with the SAE bit in DMABCR
to specify the data transfer direction (source or
destination). The function of this bit is therefore
different in dual address mode and single address
mode.
• When SAE = 0
0: Transfer with MAR as source address and
IOAR as destination address
1: Transfer with IOAR as source address and
MAR as destination address
• When SAE = 1
0: Transfer with MAR as source address and
DACK pin as write strobe
1: Transfer with DACK pin as read strobe and
MAR as destination address