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AT91RM9200-CJ-002 Datasheet(PDF) 52 Page - ATMEL Corporation

Part # AT91RM9200-CJ-002
Description  ARM920T-based Microcontroller
Download  701 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT91RM9200-CJ-002 Datasheet(HTML) 52 Page - ATMEL Corporation

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1768I–ATARM–09-Jul-09
AT91RM9200
11.7.7
CP15 Register 6, Fault Address Register
Access: Read/Write
The CP 15 Register 6, or Fault Address Register (FAR), contains the MVA (Modified Virtual Address) of the access being
attempted when the last fault occurred. The FAR is only updated for data faults, not for prefetch faults.
The ability to write to the FAR is provided to allow a debugger to restore a previous state.
• FAR[31:0]: Fault Address
On reading: returns the value of the FAR. The FAR holds the virtual address of the access which was attempted when fault
occurred.
On writing: sets the FAR to the value of the written data. This is useful for a debugger to restore the value of the FAR.
11.7.8
CP15 Register 7, Cache Operation Register
Access: Write-only
The CP15 Register 7, or Cache Operation Register, is used to manage the Instruction Cache (ICache) and the Data Cache
(DCache).
The function of each cache operation is selected by the opcode_2 and CRm fields in the MCR instruction used to write
CP15 Register 7.
31
30
29
28
27
26
25
24
FAR
23
22
21
20
19
18
17
16
FAR
D
15
14
13
12
11
10
9
8
FAR
76
543210
FAR
Table 11-6.
Cache Functions
Function
Data
CRm
opcode_2
Wait for Interrupt
SBZ
c0
4
Invalidate ICache
SBZ
c5
0
Invalidate ICache single entry (using MVA)
MVA format
c5
1
Invalidate DCache
SBZ
c6
0
Invalidate DCache single entry (using MVA)
MVA format
c6
1
Invalidate ICache and DCache
SBZ
c7
0
Clean DCache singe entry (using MVA)
MVA format
c10
1
Clean DCache single entry (using index)
Index format
c10
2
Drain write buffer
SBZ
c10
4
Prefetch ICache line (using MVA)
MVA format
c13
1
Clean and Invalidate DCache entry (using MVA)
MVA format
c14
1
Clean and Invalidate DCache entry (using index)
Index format
c14
2


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