Technical Reference Manual
002-29852 Rev. *B
3.8.3.20 CM0P_SCS_MPU_TYPE
Description:
MPU Type Register
Address:
0xE000ED90
Offset:
0xD90
Retention:
Retained
IsDeepSleep:
No
Comment:
The MPU Type Register indicates how many regions the MPU supports. Software can use it to
determine if the processor implements an MPU
Default:
0x800
Bit-field Table
Bits
7
6
5
4
3
2
1
0
Name
None [7:1]
SEPARATE
[0:0]
Bits
15
14
13
12
11
10
9
8
Name
DREGION [15:8]
Bits
23
22
21
20
19
18
17
16
Name
IREGION [23:16]
Bits
31
30
29
28
27
26
25
24
Name
None [31:24]
Bit-fields
Bits Name
SW
HW
Default or
Enum
Description
0
SEPARATE
R
R
0
Indicates support for separate instruction and data
address maps. RAZ. ARMv6-M only supports a unified
MPU.
8:15
DREGION
R
R
8
Number of regions supported by the MPU. If this field
reads-as-zero the processor does not implement an
MPU.
16:23 IREGION
R
R
0
Instruction region. RAZ. ARMv6-M only supports a
unified MPU.
181
2022-04-18
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