Texas Instruments OMAP5912 Reference Manual page 326

Figure 13. Translation Table Hierarchy
31:7
TTB DSP
MS_ADD(23:20)
MS_ADD() indicates the DSP byte address
bits used to index the associated page table.
The MMU passes the lower bits of the DSP address unchanged.
Note:
SPRU750A
Figure 13 shows the translation table hierarchy. The physical address is built
with the logical address.
As with the MPU, the page table may be hierarchical, as shown in Figure 13.
Translation table
4096 entries for 32-bit
system address
map
MS_ADD(19:12)
The first level
descriptor is
loaded here.
MS_ADD(19:10)
DSP Memory Management Unit
16 consecutive
locations
Coarse page table
256 entries
Fine page table
1024 entries
Section
MS_ADD(19:0)
1MB
Large page
MS_ADD(15:0)
64 KB
Small page
MS_ADD(11:0)
4 KB
Tiny page
MS_ADD(9:0)
1 KB
DSP Subsystem 63