ARM ARM926EJ-S - Figure 3-8 Section Translation

Memory Management Unit
3-14 Copyright © 2001-2003 ARM Limited. All rights reserved. ARM DDI0198D
Figure 3-8 Section translation
3.2.8 Second-level descriptor
If the first-level fetch returns either a coarse page table descriptor or a fine page table
descriptor, this provides the base address of the page table to be used. The page table is
then accessed and a second-level descriptor is returned. Figure 3-9 on page 3-15 shows
the format of second-level descriptors.
Table index
31 20 19 0
Section index
Translation base
31 14 13 0
Translation base
31 14 13 2 1 0
Table index 0 0
Modified virtual address
Translation table base
Section base address
31 20 19 12 11 10 9 8 5 4 3 2 1 0
SBZ AP 0 Domain 1 C B 1 0
Section base address
31 20 19 0
Section index
Section first-level descriptor
Physical address