Cfm Data Access Register (Cfmdacc); Cfmsacc Field Descriptions; Cfmdacc Field Descriptions - Motorola ColdFire MCF5281 User Manual

Memory Map
Bits Name
31–0 SUPV[31:0]
6.3.4.6

CFM Data Access Register (CFMDACC)

The CFMDACC specifies the data/program access permissions of Flash logical sectors.
31
Field
Reset
R/W
15
Field
Reset
R/W
Address
Note: The CFMPROT register is loaded at reset from the Flash Program/Data Space Restrictions longword stored at the
array base address + 0x0000_0410.
Figure 6-10. CFM Data Access Register (CFMDACC)
Bits Name
31–0 DATA[31:0]
6-14
Table 6-8. CFMSACC Field Descriptions
Supervisor address space assignment. The SUPV[31:0] bits are always readable and only
writable when LOCK = 0. Each Flash logical sector can be mapped into supervisor or
unrestricted address space. CFMSACC uses the same correspondence between logical
sectors and register bits as does CFMPROT. See Figure 6-8 for details.
When a logical sector is mapped into supervisor address space, only CPU supervisor
accesses will be allowed. A CPU user access to a location in supervisor address space will
result in a cycle termination transfer error. When a logical sector is mapped into unrestricted
address space both supervisor and user accesses are allowed.
1 Logical sector is mapped in supervisor address space.
0 Logical sector is mapped in unrestricted address space.
IPSBAR + 0x1D_0018
Table 6-9. CFMDACC Field Descriptions
Data address space assignment. The DATA[31:0] bits are always readable and only writable
when LOCK = 0. Each Flash logical sector can be mapped into data or both data and
program address space. CFMDACC uses the same correspondence between logical sectors
and register bits as does CFMPROT. See Figure 6-8 for details.
When a logical sector is mapped into data address space, only CPU data accesses will be
allowed. A CPU program access to a location in data address space will result in a cycle
termination transfer error. When an array sector is mapped into both data and program
address space both data and program accesses are allowed.
1 Logical sector is mapped in data address space.
0 Logical sector is mapped in data and program address space
MCF5282 User's Manual
Description
DATA
See Note
R/W
DATA
See Note
R/W
Description
16
0
.
MOTOROLA