Register 71: MPU Region Number (MPUNUMBER), offset 0xD98
Note: This register can only be accessed from privileged mode.
The MPUNUMBER register selects which memory region is referenced by the MPU Region Base
Address (MPUBASE) and MPU Region Attribute and Size (MPUATTR) registers. Normally, the
required region number should be written to this register before accessing the MPUBASE or the
MPUATTR register. However, the region number can be changed by writing to the MPUBASE
register with the VALID bit set (see page 197). This write updates the value of the REGION field.
MPU Region Number (MPUNUMBER)
Base 0xE000.E000
Offset 0xD98
Type RW, reset 0x0000.0000
16171819202122232425262728293031
reserved
ROROROROROROROROROROROROROROROROType
0000000000000000Reset
0123456789101112131415
NUMBERreserved
RWRWRWROROROROROROROROROROROROROType
0000000000000000Reset
DescriptionResetTypeNameBit/Field
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.
0x0000.000ROreserved31:3
MPU Region to Access
This field indicates the MPU region referenced by the MPUBASE and
MPUATTR registers. The MPU supports eight memory regions.
0x0RWNUMBER2:0
June 18, 2014196
Texas Instruments-Production Data
Cortex-M4 Peripherals
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