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Rev. 5.00, 09/03, page 82 of 760
VPN
31 23
11110010
**
16
(1) TLB Address Array Access
Read access
W
0
*
VPN
*
31 23
24
24
17
17
17
11110010
*
**
*
16
Write access
Read/write access
W
60
**
0
VPN
31 2324
11110011
000
**
1617
Address field
W
0
*
*
31 29 28
Data field
10
PPN
89 7654 3 2 1 0
XVXX
VPN
31 16
Data field
(2) TLB Data Array Access
12
1011 897
12 1011 897
12 1011 897
12 1011 897
6
*
0
0
ASID0VVPN 00
17
VPN
16 12 1011
VPN
31
ASID
897 0
*
V
DC SHPR SZ
VPN:
V:
W:
Virtual page number
Valid bit
Way (00: Way 0, 01: Way 1, 10: Way 2, 11: Way 3)
ASID:
:
Address space identifie
r
Don't care bit
PPN:
PR:
C:
SH:
VPN:
X:
W:
Physical page number
Protection key field
Cacheable bit
Share status bit
Virtual page number
0 for read, don’t care bit for write
Way (00: Way 0, 01: Way 1, 10: Way 2, 11: Way 3)
V:
SZ:
D:
:
Valid bit
Page-size bit
Dirty bit
Don't care bit
Address field
Data field
Address field
*
*
*
*
*
*
*
Figure 3.14 Specifying Address and Data for Memory-Mapped TLB Access