Information

MPU_RGDn_WORD2 field descriptions (continued)
Field Description
See M3UM description
18.3.7 Region Descriptor n, Word 3 (MPU_RGD_WORD3)
The fourth word of the region descriptor contains the region descriptor’s valid bit.
Addresses: 4000_D000h base + 40Ch offset + (16d × n), where n = 0d to 11d
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
0
VLD
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
MPU_RGDn_WORD3 field descriptions
Field Description
31–1
Reserved
This read-only field is reserved and always has the value zero.
0
VLD
Valid
Signals the region descriptor is valid. Any write to RGDn_WORD0–2 clears this bit.
0 Region descriptor is invalid
1 Region descriptor is valid
Memory Map/Register Definition
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
376 Freescale Semiconductor, Inc.