mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 238

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

11.6.1.6 MMU INSTRUCTION REAL PAGE NUMBER REGISTER. The MMU instruction
real page number (MI_RPN) register contains the physical address and the storage
attributes of an entry to be loaded into a translation lookaside buffer. This register must be
written after the MI_EPN and MI_TWC registers are written.
RPN—Real Page Number
These bits are the most-significant bits of the page’s physical address.
PP1—Protection for the First 1K Subpage in a 4K Page
This field contains protection code for the first subpage in a 4K page. Depending on Bit 22
of the PP2 field, the same protection code has different protection schemes.
MI_RPN
NOTE: — = Undefined. The default values depend on the state of system memory.
RESET
RESET
FIELD
ADDR
FIELD
ADDR
R/W
R/W
BIT
BIT
16
0
17
1
RPN
R/W
—
18
2
SETTING
Freescale Semiconductor, Inc.
PP1
00
01
10
11
For More Information On This Product,
4K PAGES WITH 1K RESOLUTION PROTECTION
19
3
20
MPC823 REFERENCE MANUAL
4
PRIVILEGED MODE
PP1
R/W
—
Go to: www.freescale.com
Executable
Executable
Executable
21
No access
5
INSTRUCTION PAGES
22
6
PP2
R/W
—
23
SPR 790
SPR 790
7
RPN
R/W
—
24
8
PROBLEM MODE
PP3
R/W
—
Executable
Executable
No access
No access
25
9
10
26
PP4
R/W
—
11
27
Memory Management Unit
R/W
LPS
12
28
—
R/W
SH
13
29
—
R/W
14
30
CI
—
11-21
R/W
15
31
—
V