Motorola MPC823e Reference Manual page 246

Memory Management Unit
PP2 SETTING
0x
1x
x1
x0
PP3—Protection for the Third 1K Subpage in a 4K Page
This field contains protection code for the third subpage in a 4K page. Depending on the
encoding mode, this field has different meanings.
PP3
SETTING
00
01
10
11
PAGES OVER 4K WITH 4K RESOLUTION PROTECTION
PP3 SETTING
0x
1x
x0
x1
11-28
PAGES OVER 4K WITH 4K RESOLUTION PROTECTION
PP1 contains PowerPC encoding
PP1 contains Extended Encoding
Page is writable
Page is write-protected
4K PAGES WITH 1K RESOLUTION PROTECTION
DATA PAGES
PRIVILEGED MODE
No access
Read/Write
Read/Write
Read/Write
CASE: MD_CTR (PPCS) = 0
First subpage not valid
First subpage valid
Second subpage not valid
Second subpage valid
MPC823e REFERENCE MANUAL
PROBLEM MODE
No access
No access
Read-only
Read/Write
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