s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 572

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

MMU
Table 3-6 shows how to interpret the access permission (AP) bits and how their interpretation is dependent upon the
S and R bits (control register bits 8 and 9).
3-20
AP
00
00
00
00
01
10
11
xx
S
0
1
0
1
x
x
x
1
Table 3-6. Interpreting Access Permission (AP) Bits
R
0
0
1
1
x
x
x
1
No access
Read only
Read only
Reserved
Read/write
Read/write
Read/write
Reserved
Permissions
Supervisor
No access
No access
Read only
No access
Read only
Read/write
Permissions
User
Any access generates a
permission fault
Supervisor read only permitted
Any write generates a
permission fault
Access allowed only in
supervisor mode
Writes in user mode cause
permission fault
All access types permitted in
both modes.
ARM920T PROCESSOR
Notes