AT32UC3L064_11 ATMEL [ATMEL Corporation], AT32UC3L064_11 Datasheet - Page 25

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AT32UC3L064_11

Manufacturer Part Number
AT32UC3L064_11
Description
32-bit Atmel AVR Microcontroller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
4.4.3.3
4.4.4
32099HS–12/2011
System Registers
Secure State
Debug state can be entered as described in the AVR32UC Technical Reference Manual.
Debug state is exited by the retd instruction.
The AVR32 can be set in a secure state, that allows a part of the code to execute in a state with
higher security levels. The rest of the code can not access resources reserved for this secure
code. Secure State is used to implement FlashVault technology. Refer to the AVR32UC Techni-
cal Reference Manual for details.
The system registers are placed outside of the virtual memory space, and are only accessible
using the privileged mfsr and mtsr instructions. The table below lists the system registers speci-
fied in the AVR32 architecture, some of which are unused in AVR32UC. The programmer is
responsible for maintaining correct sequencing of any instructions following a mtsr instruction.
For detail on the system registers, refer to the AVR32UC Technical Reference Manual.
Table 4-3.
Reg #
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Address
0
4
8
12
16
20
24
28
32
36
40
44
48
52
56
60
64
68
72
76
80
84
88
92
System Registers
Name
SR
EVBA
ACBA
CPUCR
ECR
RSR_SUP
RSR_INT0
RSR_INT1
RSR_INT2
RSR_INT3
RSR_EX
RSR_NMI
RSR_DBG
RAR_SUP
RAR_INT0
RAR_INT1
RAR_INT2
RAR_INT3
RAR_EX
RAR_NMI
RAR_DBG
JECR
JOSP
JAVA_LV0
Function
Status Register
Exception Vector Base Address
Application Call Base Address
CPU Control Register
Exception Cause Register
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
Return Status Register for Debug mode
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
Return Address Register for Debug mode
Unused in AVR32UC
Unused in AVR32UC
Unused in AVR32UC
AT32UC3L016/32/64
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