Renesas H8/3067 Series User Manual page 242

Section 7 DMA Controller
Bit 6—Data Transfer Size (DTSZ): Selects the data size of each transfer.
Bit 6
DTSZ Description
0 Byte-size transfer
1 Word-size transfer
Bit 5—Data Transfer Increment/Decrement (DTID): Selects whether to increment or
decrement the memory address register (MAR) after a data transfer in I/O mode or repeat mode.
Bit 5
DTID Description
0 MAR is incremented after each data transfer
•
If DTSZ = 0, MAR is incremented by 1 after each transfer
•
If DTSZ = 1, MAR is incremented by 2 after each transfer
1 MAR is decremented after each data transfer
•
If DTSZ = 0, MAR is decremented by 1 after each transfer
•
If DTSZ = 1, MAR is decremented by 2 after each transfer
MAR is not incremented or decremented in idle mode.
Bit 4—Repeat Enable (RPE): Selects whether to transfer data in I/O mode, idle mode, or repeat
mode.
Bit 4 Bit 3
RPE DTIE
0 0
1
1 0
1
Operations in these modes are described in sections 7.4.2, I/O Mode, 7.4.3, Idle Mode, and 7.4.4,
Repeat Mode.
Rev. 4.00 Jan 26, 2006 page 218 of 938
REJ09B0276-0400
Description
I/O mode
Repeat mode
Idle mode
(Initial value)
(Initial value)
(Initial value)