LM3S5C36 Datasheet, PDF (158/1068 Pages) Texas Instruments – Stellaris® LM3S5C36 Microcontroller

Cortex-M3 Peripherals
Register 44: MPU Type (MPUTYPE), offset 0xD90
Note: This register can only be accessed from privileged mode.
The MPUTYPE register indicates whether the MPU is present, and if so, how many regions it
supports.
MPU Type (MPUTYPE)
Base 0xE000.E000
Offset 0xD90
Type RO, reset 0x0000.0800
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
IREGION
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
DREGION
reserved
SEPARATE
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:24
23:16
15:8
Name
reserved
IREGION
DREGION
Type
RO
RO
RO
Reset
0x00
0x00
0x08
Description
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
Number of I Regions
This field indicates the number of supported MPU instruction regions.
This field always contains 0x00. The MPU memory map is unified and
is described by the DREGION field.
Number of D Regions
Value Description
0x08 Indicates there are eight supported MPU data regions.
7:1
reserved
RO
0x00 Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0
SEPARATE
RO
0
Separate or Unified MPU
Value Description
0 Indicates the MPU is unified.
158
January 23, 2012
Texas Instruments-Production Data