Information

MPU_CESR field descriptions (continued)
Field Description
22–20
Reserved
This read-only field is reserved and always has the value zero.
19–16
HRL
Hardware revision level
Specifies the MPU’s hardware and definition revision level. It can be read by software to determine the
functional definition of the module.
15–12
NSP
Number of slave ports
Specifies the number of slave ports connected to the MPU.
11–8
NRGD
Number of region descriptors
Indicates the number of region descriptors implemented in the MPU.
0000 8 region descriptors
0001 12 region descriptors
0010 16 region descriptors
7–1
Reserved
This read-only field is reserved and always has the value zero.
0
VLD
Valid (global enable/disable for the MPU)
0 MPU is disabled. All accesses from all bus masters are allowed.
1 MPU is enabled
Chapter 18 Memory Protection Unit (MPU)
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc. 367