Datasheet

Table Of Contents
Section 7 DMA Controller (DMAC)
Page 158 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
Full Address Mode (DMACRA)
Bit Bit Name Initial Value R/W Description
15 DTSZ 0 R/W Data Transfer Size
Selects the size of data to be transferred at one time.
0: Byte-size transfer
1: Word-size transfer
14
13
SAID
SAIDE
0
0
R/W
R/W
Source Address Increment/Decrement
Source Address Increment/Decrement Enable
These bits specify whether source address register MARA is
to be incremented, decremented, or left unchanged, when
data transfer is performed.
00: MARA is fixed
01: MARA is incremented after a data transfer
When DTSZ = 0, MARA is incremented by 1 after a
transfer
When DTSZ = 1, MARA is incremented by 2 after a
transfer
10: MARA is fixed
11: MARA is decremented after a data transfer
When DTSZ = 0, MARA is decremented by 1 after a
transfer
When DTSZ = 1, MARA is decremented by 2 after a
transfer