Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK Data Sheet
Product codes
ATSAM4L-XSTK
189
42023E–SAM–07/2013
ATSAM4L8/L4/L2
12.7.14
Voltage Regulator Configuration Register
Name:
VREGCR
Access Type:
Read/Write
Reset Value:
-
• SFV: Store Final Value
0: The DIS field is read/write.
1: The DIS field is read-only, to protect against further accidental writes.
• SSWEVT: Stop Switching On Event Enable
0: The stop switching mechanism is not controlled by the Peripheral Event Controller.
1: The stop switching mechanism is controlled by the Peripheral Event Controller.
This bit should be set only when the switching regulator feature is used.
• SSW: Stop Switching
0: The switching regulator is not forced to stop switching.
1: The switching regulator is forced to stop switching if the SSWEVT bit is set to zero.
This bit should be set only when the switching regulator feature is used.
• SSG: Spread Spectrum Generator Enable
0: The spread spectrum of the internal switching oscillator is disabled.
1: The spread spectrum of the internal switching oscillator is enabled.
To operate, the spread spectrum functionality requires the CLKOEN in the RC1MCR register to be enabled.
This bit should be set only when the switching regulator feature is used.
• DIS: Voltage Regulator disable
0: The voltage regulator is enabled.
1: The voltage regulator is disabled.
Note that this register is protected by a lock. To write to this register the UNLOCK register has to be written first. Refer to
for details.
31
30
29
28
27
26
25
24
SFV
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
-
-
-
-
SSWEVT
SSW
SSG
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
DIS