228
Bit 15—Data Transfer Size (DTSZ): Selects the size of data to be transferred at one time.
Bit 15
DTSZ
Description
0
Byte-size transfer
(Initial value)
1
Word-size transfer
Bit 14—Source Address Increment/Decrement (SAID)
Bit 13—Source Address Increment/Decrement Enable (SAIDE): These bits specify whether
source address register MARA is to be incremented, decremented, or left unchanged, when data
transfer is performed.
Bit 14
Bit 13
SAID
SAIDE
Description
0
0
MARA is fixed
(Initial value)
1
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
1
0
MARA is fixed
1
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
Bit 12—Block Direction (BLKDIR)
Bit 11—Block Enable (BLKE): These bits specify whether normal mode or block transfer mode
is to be used. If block transfer mode is specified, the BLKDIR bit specifies whether the source side
or the destination side is to be the block area.
Bit 12
Bit 11
BLKDIR
BLKE
Description
0
0
Transfer in normal mode
(Initial value)
1
Transfer in block transfer mode, destination side is block area
1
0
Transfer in normal mode
1
Transfer in block transfer mode, source side is block area
For operation in normal mode and block transfer mode, see section 8.5, Operation.
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...