518
ABWCR—Bus Width Control Register
H'FEC0
Bus Controller
Bit
Modes 2, 4, 6
Initial value
Read/Write
Modes 1, 5, 7
Initial value
Read/Write
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
2
ABW2
1
R/W
0
R/W
1
ABW1
1
R/W
0
R/W
0
ABW0
1
R/W
0
R/W
0 Area n is designated as 16-bit access space
Area n is designated as 8-bit access space
Area 7 to 0 Bus Width Control
1
(n = 15 to 0)
ASTCR—Access State Control Register
H'FEC1
Bus Controller
Bit
Initial value
Read/Write
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
2
AST2
1
R/W
1
AST1
1
R/W
0
AST0
1
R/W
0 Area n is designated as 2-state access space
Wait state insertion in area n external space accesses is disabled
Area n external space accesses are 3-state accesses
Wait state insertion in area n external space accesses is enabled
Area 7 to 0 Access State Control
1
(n = 7 to 0)
Содержание H8S/2670
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