Texas Instruments TM4C1294NCPDT User Manual

Register 76: MPU Region Attribute and Size (MPUATTR), offset 0xDA0
Register 77: MPU Region Attribute and Size Alias 1 (MPUATTR1), offset 0xDA8
Register 78: MPU Region Attribute and Size Alias 2 (MPUATTR2), offset 0xDB0
Register 79: MPU Region Attribute and Size Alias 3 (MPUATTR3), offset 0xDB8
Note: This register can only be accessed from privileged mode.
The MPUATTR register defines the region size and memory attributes of the MPU region specified
by the MPU Region Number (MPUNUMBER) register and enables that region and any subregions.
The MPUATTR register is accessible using word or halfword accesses with the most-significant
halfword holding the region attributes and the least-significant halfword holds the region size and
the region and subregion enable bits.
The MPU access permission attribute bits, XN, AP, TEX, S, C, and B, control access to the
corresponding memory region. If an access is made to an area of memory without the required
permissions, then the MPU generates a permission fault.
The SIZE field defines the size of the MPU memory region specified by the MPUNUMBER register
as follows:
(Region size in bytes) = 2
(SIZE+1)
The smallest permitted region size is 32 bytes, corresponding to a SIZE value of 4. Table
3-10 on page 199 gives example SIZE values with the corresponding region size and value of N in
the MPU Region Base Address (MPUBASE) register.
Table 3-10. Example SIZE Field Values
NoteValue of N
a
Region SizeSIZE Encoding
Minimum permitted size532 B00100b (0x4)
-101 KB01001b (0x9)
-201 MB10011b (0x13)
-301 GB11101b (0x1D)
Maximum possible sizeNo valid ADDR field in MPUBASE; the
region occupies the complete
memory map.
4 GB11111b (0x1F)
a. Refers to the N parameter in the MPUBASE register (see page 197).
MPU Region Attribute and Size (MPUATTR)
Base 0xE000.E000
Offset 0xDA0
Type RW, reset 0x0000.0000
16171819202122232425262728293031
BCSTEXreservedAPreservedXNreserved
RWRWRWRWRWRWRORORWRWRWRORWROROROType
0000000000000000Reset
0123456789101112131415
ENABLESIZEreservedSRD
RWRWRWRWRWRWRORORWRWRWRWRWRWRWRWType
0000000000000000Reset
199June 18, 2014
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TM4C1294NCPDT Microcontroller

Texas Instruments TM4C1294NCPDT Specifications

General

Brand	Texas Instruments
Model	TM4C1294NCPDT
Category	Microcontrollers
Language	English