Hitachi H8/3048 Hardware Manual page 208

Bit 6—Data Transfer Size (DTSZ): Selects the data size of each transfer.
www.DataSheet4U.com
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 Description
0 0 I/O mode
1
1 0 Repeat mode
1 Idle mode
Operations in these modes are described in sections 8.4.2, I/O Mode, 8.4.3, Idle Mode, and 8.4.4,
Repeat Mode.
194
(Initial value)
(Initial value)