Freescale Semiconductor MCF54455 Reference Manual page 326

Each master is assigned depending on its connection to the various crossbar switch master ports.
The MPROTn field is defined as shown below.
Field
3 Reserved, must be cleared.
2 Master trusted for read. Determines whether the master is trusted for read accesses.
MTR 0 This master is not trusted for read accesses.
1 This master is trusted for read accesses.
1 Master trusted for writes. Determines whether the master is trusted for write accesses.
MTW 0 This master is not trusted for write accesses.
1 This master is trusted for write accesses.
0 Master privilege level. Determines how the privilege level of the master is determined.
MPL 0 Accesses from this master are forced to user-mode.
1 Accesses from this master are not forced to user-mode.
Freescale Semiconductor
Table 14-2. MPROTn Assignments
Crossbar Switch
MPROTn
Port Number
M0 MPROT0
M1 MPROT1
M2 MPROT2
M3 MPROT3
M5 MPROT5
M6 MPROT6
M7 MPROT7
1
This field is located at MPR[3:0]. However, it is hardwired to
0111 and may not be altered.
3
R 0
MTR
W
Figure 14-2. MPROTn Fields
Table 14-3. MPROTn Field Descriptions
Master
ColdFire Core
eDMA Controller
FEC0
FEC1
PCI Controller
USB On-the-Go
1
Serial Boot
2 1 0
MTW MPL
Description
System Control Module (SCM)
14-3