Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK Data Sheet
Product codes
ATSAM4L-XSTK
226
42023E–SAM–07/2013
ATSAM4L8/L4/L2
13.7.6
Power and Clocks Status Register
Name: PCLKSR
Access Type:
Read-only
Offset: 0x0014
Reset Value:
0x00000000
• RCFASTLOCKLOST: RCFAST lock lost value
0: RCFAST has not lost it’s lock or has never been enabled.
1: RCFAST has lost it’s lock.
• RCFASTLOCK: RCFAST Locked on Accurate value
0: RCFAST is not locked on accurate value.
1: RCFAST is locked on accurate value, the tuning procedure is completed and the current count is within the
RCFASTCFG.LOCKMARGIN of the target count.
• PLL0LOCKLOST: PLL0 lock lost value
0: PLL0 has not lost it’s lock or has never been enabled.
1: PLL0 has lost it’s lock, either by disabling the PLL0 or due to faulty operation.
• PLL0LOCK: PLL0 Locked on Accurate value
0: PLL0 is unlocked on accurate value.
1: PLL0 is locked on accurate value, and is ready to be selected as clock source with an accurate output clock.
• DFLL0RCS: DFLL0 Reference Clock Stopped
0: The DFLL reference clock is running, or has never been enabled.
1: The DFLL reference clock has stopped or is too slow.
• DFLL0RDY: DFLL0 Synchronization Ready
0: Read or write to DFLL registers is invalid.
1: Read or write to DFLL registers is valid.
• DFLL0LOCKF: DFLL0 Locked on Fine Value
0: DFLL is unlocked on Fine value.
1: DFLL is locked on Fine value, and is ready to be selected as clock source with a high accuracy on the output clock.
• DFLL0LOCKC: DFLL0 Locked on Coarse Value
0: DFLL is unlocked on Coarse value.
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
RCFASTLOC
KLOST
RCFASTLOC
K
-
-
-
-
-
7
6
5
4
3
2
1
0
PLL0LOCKL
OST
PLL0LOCK
-
DFLL0RCS
DFLL0RDY
DFLL0LOCK
F
DFLL0LOCK
C
OSC0RDY