7. Memory Management Unit (MMU)
Rev.1.00 Jan. 10, 2008 Page 152 of 1658
REJ09B0261-0100
7.2
Register Descriptions
The following registers are related to MMU processing.
Table 7.1
Register Configuration
Register Name
Abbreviation R/W
P4 Address
*
Area 7
Address
*
Size
Page table entry high register
PTEH
R/W
H'FF00 0000
H'1F00 0000
32
Page table entry low register
PTEL
R/W
H'FF00 0004
H'1F00 0004
32
Translation table base register
TTB
R/W
H'FF00 0008
H'1F00 0008
32
TLB exception address register
TEA
R/W
H'FF00 000C
H'1F00 000C
32
MMU control register
MMUCR
R/W
H'FF00 0010
H'1F00 0010
32
Page table entry assistance
register
PTEA
R/W
H'FF00 0034
H'1F00 0034
32
Physical address space control
register
PASCR
R/W
H'FF00 0070
H'1F00 0070
32
Instruction re-fetch inhibit control
register
IRMCR
R/W
H'FF00 0078
H'1F00 0078
32
Note:
*
These P4 addresses are for the P4 area in the virtual address space. These area 7
addresses are accessed from area 7 in the physical address space by means of the
TLB.
Table 7.2
Register States in Each Processing State
Register Name
Abbreviation
Power-on
Reset
Manual
Reset
Sleep
Standby
Page table entry high register
PTEH
Undefined Undefined Retained Retained
Page table entry low register
PTEL
Undefined
Undefined
Retained
Retained
Translation table base register
TTB
Undefined Undefined Retained Retained
TLB exception address register
TEA Undefined
Retained
Retained
Retained
MMU control register
MMUCR
H'0000 0000 H'0000 0000 Retained
Retained
Page table entry assistance
register
PTEA
H'0000 xxx0 H'0000 xxx0 Retained
Retained
Physical address space control
register
PASCR
H'0000 0000 H'0000 0000 Retained
Retained
Содержание SH7781
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Страница 762: ...14 Direct Memory Access Controller DMAC Rev 1 00 Jan 10 2008 Page 732 of 1658 REJ09B0261 0100 ...
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Страница 846: ...18 Timer Unit TMU Rev 1 00 Jan 10 2008 Page 816 of 1658 REJ09B0261 0100 ...
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