PXD10RM Datasheet, PDF (897/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

Table 24-7. MPU_RGDn.Word2 Field Descriptions
Field
Description
8
M3PE
9–10
M3SM
11–13
M3UM
14
M2PE
15–16
M2SM
17–19
M2UM
20
M1PE
21–22
M1SM
23–25
M1UM
26
M0PE
Bus master 3 process identifier enable. If set, this flag specifies that the process identifier and mask
(defined in MPU_RGDn.Word3) are to be included in the region hit evaluation. If cleared, then the region
hit evaluation does not include the process identifier.
Bus master 3 supervisor mode access control. This 2-bit field defines the access controls for bus master
3 when operating in supervisor mode. The M3SM field is defined as:
0b00 r, w, x = read, write and execute allowed
0b01 r, –, x = read and execute allowed, but no write
0b10 r, w, – = read and write allowed, but no execute
0b11 Same access controls as that defined by M3UM for user mode
Bus master 3 user mode access control. This 3-bit field defines the access controls for bus master 3
when operating in user mode. The M3UM field consists of three independent bits, enabling read, write
and execute permissions: {r,w,x}. If set, the bit allows the given access type to occur; if cleared, an
attempted access of that mode may be terminated with an access error (if not allowed by any other
descriptor) and the access not performed.
Bus master 2 process identifier enable. If set, this flag specifies that the process identifier and mask
(defined in MPU_RGDn.Word3) are to be included in the region hit evaluation. If cleared, then the region
hit evaluation does not include the process identifier.
Bus master 2 supervisor mode access control. This 2-bit field defines the access controls for bus master
2 when operating in supervisor mode. The M2SM field is defined as:
0b00 r, w, x = read, write and execute allowed
0b01 r, –, x = read and execute allowed, but no write
0b10 r, w, – = read and write allowed, but no execute
0b11 Same access controls as that defined by M2UM for user mode
Bus master 2 user mode access control. This 3-bit field defines the access controls for bus master 2
when operating in user mode. The M2UM field consists of three independent bits, enabling read, write
and execute permissions: {r,w,x}. If set, the bit allows the given access type to occur; if cleared, an
attempted access of that mode may be terminated with an access error (if not allowed by any other
descriptor) and the access not performed.
Bus master 1 process identifier enable. If set, this flag specifies that the process identifier and mask
(defined in MPU_RGDn.Word3) are to be included in the region hit evaluation. If cleared, then the region
hit evaluation does not include the process identifier.
Bus master 1 supervisor mode access control. This 2-bit field defines the access controls for bus master
1 when operating in supervisor mode. The M1SM field is defined as:
0b00 r, w, x = read, write and execute allowed
0b01 r, –, x = read and execute allowed, but no write
0b10 r, w, – = read and write allowed, but no execute
0b11 Same access controls as that defined by M1UM for user mode
Bus master 1 user mode access control. This 3-bit field defines the access controls for bus master 1
when operating in user mode. The M1UM field consists of three independent bits, enabling read, write
and execute permissions: {r,w,x}. If set, the bit allows the given access type to occur; if cleared, an
attempted access of that mode may be terminated with an access error (if not allowed by any other
descriptor) and the access not performed.
Bus master 0 process identifier enable. If set, this flag specifies that the process identifier and mask
(defined in MPU_RGDn.Word3) are to be included in the region hit evaluation. If cleared, then the region
hit evaluation does not include the process identifier.
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
24-11