r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 243
r5s77631ay266bgv
Manufacturer Part Number
r5s77631ay266bgv
Description
Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5S77631AY266BGV.pdf
(2026 pages)
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6.7
Setting the SE bit in PASCR to 1 changes mode from 29-bit address mode which handles the 29-
bit physical address space to 32-bit address extended mode which handles the 32-bit physical
address space.
Virtual address space
32-Bit Address Extended Mode
Address field
Figure 6.16 Physical Address Space (32-Bit Address Extended Mode)
P1(0.5GB)
P2(0.5GB)
P3(0.5GB)
P4(0.5GB)
U0/P0
(2GB)
Data field
29-bit Physical address space
(Normal mode)
31
Figure 6.15 Memory-Mapped UTLB Data Array
31
1 1 1 1 0 1 1 1 0 0 0 0
PPN:
SZ:
D:
V:
E:
* :
29 28
Physical page number
Validity bit
Entry
Page size bits
Dirty bit
Don't care
address space
29-bits
0.5GB
20
PPN
19
*
*
WT:
PR:
SH:
* * * *
C:
Virtual address space
:
Protection key data
Cacheability bit
Share status bit
Write-through bit
Reserved bits (write value should be 0
and read value is undefined )
14 13
P3(0.5GB)
P4(0.5GB)
P1/P2
(1GB)
Section 6 Memory Management Unit (MMU)
U0/P0
(2GB)
Rev. 1.00 Oct. 01, 2007 Page 177 of 1956
32-bit Physical address space
E
10 9 8 7
(Extended mode)
V
8 7
* * * * * *
6 5
SZ1
PR
4 3
address space
C
2 1 0
D
2
32-bit
REJ09B0256-0100
SH
4GB
0 0
1
WT
0
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