Figure 3-11 Small Page Translation From A Coarse Page Table - ARM ARM926EJ-S Technical Reference Manual

Memory Management Unit
3.2.10 Translating small page references
31
Translation base
31
Translation base
31
Coarse page table base address
31
Coarse page table base address
31
Page base address
31
Page base address
3-18
Figure 3-11 shows the complete translation sequence for a 4KB small page.
31
Translation table base
14 13
14 13
First-level descriptor
Second-level descriptor
12 11 10 9 8 7 6 5 4 3 2 1 0
AP3 AP2 AP1 AP0 C B 1 0
Physical address
12 11

Figure 3-11 Small page translation from a coarse page table

If a small page descriptor is included in a fine page table, the upper two bits of the page
index and low-order two bits of the fine page table index overlap. Each fine page table
entry for a small page must therefore be duplicated four times.
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Modified virtual address
20 19
Table index
0
2 1 0
Table index 0 0
10 9 8 5 4 3 2 1 0
Domain 1 0 1
10 9 2 1 0
L2 table index 0 0
0
Page index
12 11
Level two
Page index
table index
0
ARM DDI0198D