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Fujitsu mb91192 用户手册

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页码 共 348
91
4.5.1
Area Selection Register (ASR) and Area Mask Register 
(AMR) 
Area selection registers (ASR1 to ASR5) and area mask registers (AMR1 to ACR5) 
specify the address space of the chip select areas 1 to 5.
■
Area Selection Register (ASR) and Area Mask Register (AMR) 
Figure 4.5-2  Area selection register (ASR1 to 5) 
Figure 4.5-3  Area Mask register (AMR1 to 5) 
Area selection registers (ASR1 to ASR5) and area mask registers (AMR1 to ANR5) specify the address
space of the chip select areas 1 to 5. 
Area selection registers (ASR1 to ASR5) specify the upper 16 bits (A31 to A16) of the address, and mask
the address bit supported by the area mask registers (AMR1 to AMR 5). Each bit of area mask register
ASR1
15
14
13
12
2
1
0
A31
A30
A29
A18
A17
A16
ASR2
15
14
13
12
2
1
0
A31
A30
A29
A18
A17
A16
ASR3
15
14
13
12
2
1
0
A31
A30
A29
A18
A17
A16
ASR4
15
14
13
12
2
1
0
A31
A30
A29
A18
A17
A16
ASR5
15
14
13
12
2
1
0
A31
A30
A29
A18
A17
A16
Address 0000 060C
H
Address 0000 0610
H
Address 0000 0614
H
Address 0000 0618
H
Address 0000 061C
H
bit
bit
bit
bit
bit
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
Initial value
 0001
H
0002
H
0003
H
0004
H
0005
H
AMR1
15
14
13
12
2
1
0
A31
A30
A29
A18
A17
A16
AMR2
15
14
13
12
2
1
0
A31
A30
A29
A18
A17
A16
AMR3
15
14
13
12
2
1
0
A31
A30
A29
A18
A17
A16
AMR4
15
14
13
12
2
1
0
A31
A30
A29
A18
A17
A16
AMR5
15
14
13
12
2
1
0
A31
A30
A29
A18
A17
A16
Address 0000 060E
H
Address 0000 0612
H
Address 0000 0616
H
Address 0000 061A
H
Address 0000 061E
H
bit
bit
bit
bit
bit
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
Initial valaue
 0000
H
0000
H
0000
H
0000
H
0000
H
Access
Access
Access
Access
Access