Atmel SAM4S-EK2 Atmel ATSAM4S-EK2 ATSAM4S-EK2 Ficha De Dados
Códigos do produto
ATSAM4S-EK2
251
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
14.5.2 Reset Controller Status Register
Name:
RSTC_SR
Address:
0x400E1404
Access:
Read-only
• URSTS: User Reset Status
0 = No high-to-low edge on NRST happened since the last read of RSTC_SR.
1 = At least one high-to-low transition of NRST has been detected since the last read of RSTC_SR.
• RSTTYP: Reset Type
Reports the cause of the last processor reset. Reading this RSTC_SR does not reset this field.
• NRSTL: NRST Pin Level
Registers the NRST Pin Level at Master Clock (MCK).
• SRCMP: Software Reset Command in Progress
0 = No software command is being performed by the reset controller. The reset controller is ready for a software command.
1 = A software reset command is being performed by the reset controller. The reset controller is busy.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
SRCMP
NRSTL
15
14
13
12
11
10
9
8
–
–
–
–
–
RSTTYP
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
URSTS
RSTTYP
Reset Type
Comments
0
0
0
General Reset
First power-up Reset
0
0
1
Backup Reset
Return from Backup Mode
0
1
0
Watchdog Reset
Watchdog fault occurred
0
1
1
Software Reset
Processor reset required by the software
1
0
0
User Reset
NRST pin detected low