1066
ABWCR—Bus Width Control Register
H'FED0
Bus Controller
7
ABW7
1
R/W
0
R/W
6
ABW6
1
R/W
0
R/W
5
ABW5
1
R/W
0
R/W
4
ABW4
1
R/W
0
R/W
3
ABW3
1
R/W
0
R/W
0
ABW0
1
R/W
0
R/W
2
ABW2
1
R/W
0
R/W
1
ABW1
1
R/W
0
R/W
Area 7 to 0 bus width control
Sets area n to 16-bit access.
Sets area n to 8-bit access.
0
1
(n= 7 to 0)
Bit
Mode 5 to 7
Initial value
R/W
Mode 4
Initial value
R/W
:
:
:
:
:
:
ASTCR—Access State Control Register
H'FED1
Bus Controller
7
AST7
1
R/W
6
AST6
1
R/W
5
AST5
1
R/W
4
AST4
1
R/W
3
AST3
1
R/W
0
AST0
1
R/W
2
AST2
1
R/W
1
AST1
1
R/W
Area 7 to 0 access state control
Area n set as 2-state access area.
Insertion of wait states in area n external area access is disabled.
External area access of area n set as 3-state access area.
Insertion of wait states in area n external area access is enabled.
0
1
(n= 7 to 0)
Bit
Initial value
R/W
:
:
:
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 ...