Memory Management Unit
3-18 Copyright © 2001-2003 ARM Limited. All rights reserved. ARM DDI0198D
3.2.10 Translating small page references
Figure 3-11 shows the complete translation sequence for a 4KB small page.
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.
Translation base
31 14 13 0
Translation base
31 14 13 2 1 0
Table index 0 0
Modified virtual address
Translation table base
Table index
31 20 19 12 11 0
Level two
table index
Page index
Coarse page table base address
31 1098 543210
Domain 1 0 1
Coarse page table base address
31 10 9 2 1 0
L2 table index 0 0
Page base address
31 1211109876543210
AP3 AP2 AP1 AP0 C B 1 0
Page base address
31 12 11 0
Page index
First-level descriptor
Second-level descriptor
Physical address
To Next Page
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