Rev. 2.00, 09/03, page 91 of 690
1 1 1 1 0 0 1 0
9
VPN: Virtual page number
V: Valid
bit
W:
Way (00: Way 0, 01: Way 1, 10: Way 2, 11: Way 3)
ASID: Address space identifier
*
:
Don't care bit
Address field
Data field
Address field
Data field
Address field
Data field
31
24 23
17 16
12 1110 9 8 7
0
31
17 16
12 1110 9 8 7
0
31
24 23
17 16
12 11
11
10 9 8 7
0
31
17 16
12
10 9 8 7
0
31
24 23
29 28
17 16
12 1110 9 8 7
0
1
2
31
10
8 7
0
6
6 5 4 3 2 1
0 0 0
VPN
1 1 1 1 0 0 1 0
1 1 1 1 0 0 1 1
(1) TLB address array access
• Read access
•
Write access
(2) TLB data array access
• Read/write access
6
*
. . . . . . . . . . . .
*
VPN
W
0
* *
*
. . . . . . . . .
*
VPN
0 . . . . . . . 0 VPN 0 V
ASID
*
. . . . . . . . . . . .
*
VPN
*
. . . . . . .
*
W
0
*
. . . . . . . . .
*
*
*
VPN
V
*
ASID
*
. . . . . . . . . . . .
*
VPN
W
*
. . . . . . . . . . .
*
*
*
PPN
X V X PR SZ C D SH X
PPN: Physical page number
PR:
Protection key field
C:
Cacheable bit
SH: Share status bit
VPN: Virtual page number
X:
0 for read, don't care bit for write
W:
Way (00: Way 0, 01: Way 1, 10: Way 2, 11: Way 3)
V:
Valid bit
SZ: Page-size bit
D:
Dirty bit
*
:
Don't care bit
00
1
2
00
1
2
00
Figure 3.14 Specifying Address and Data for Memory-Mapped TLB Access
Содержание SH7705
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