參數(shù)資料
型號: ARM610
廠商: Mitel Networks Corporation
英文描述: General Purpose 32-Bit Microprocessor with 4kByte Cache,Write Buffer and Memory Management Unit(通用32位微處理器(帶4K字節(jié)緩存,寫緩沖器和存儲器管理單元))
中文描述: 通用32位微處理器4KB的高速緩存,寫緩沖器和存儲器管理單元(通用32位微處理器(帶4K的字節(jié)緩存,寫緩沖器和存儲器管理單元))
文件頁數(shù): 114/174頁
文件大?。?/td> 694K
代理商: ARM610
Memory Management Unit
ARM610 Data Sheet
9-10
9.10 Translating Small Page References
·
Figure 9-7: Small page translationillustrates the complete translation sequence for
a 4Kb Small Page. Page translation involves one additional step beyond that of a
section translation: the Level One descriptor is the Page Table descriptor, and this is
used to point to the Level Two descriptor, or Page Table Entry. (Note that the access
permissions are now contained in the Level Two descriptor and must be checked
before the physical address is generated. The sequence for checking access
permissions is described later.)
Figure 9-7: Small page translation
0
19
20
31
0
31
Table Index
Page Index
Virtual Address
Translation Base
13
14
Translation Table Base
0
31
Translation Base
13
14
0 0
1
2
Table Index
First Level Descriptor
18
12
0 1
Domain
Page Table Base Address
0
1
2
4
5
8
9
10
31
0 0
Page Table Base Address
0
1
2
9
10
31
L2 Table Index
11
12
L2 Table Index
1 0
C B
ap3
Page Base Address
0
1
2
3
4
5
8
9
10
11
12
31
Second Level Descriptor
6
7
ap2 ap1 ap0
Page Base Address
0
11
12
31
Page Index
Physical Address
12
8
U
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