Datasheet

205
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
22.13.17PMC Status Register
Name: PMC_SR
Address: 0xFFFFFC68
Access: Read-only
• MOSCXTS: Main XTAL Oscillator Status
0 = Main XTAL oscillator is not stabilized.
1 = Main XTAL oscillator is stabilized.
• LOCKA: PLLA Lock Status
0 = PLLA is not locked
1 = PLLA is locked.
• MCKRDY: Master Clock Status
0 = Master Clock is not ready.
1 = Master Clock is ready.
• LOCKU: UPLL Clock Status
0 = UPLL Clock is not ready.
1 = UPLL Clock is ready.
• OSCSELS: Slow Clock Oscillator Selection
0 = Internal slow clock RC oscillator is selected.
1 = External slow clock 32 kHz oscillator is selected.
• PCKRDYx: Programmable Clock Ready Status
0 = Programmable Clock x is not ready.
1 = Programmable Clock x is ready.
• MOSCSELS: Main Oscillator Selection Status
0 = Selection is in progress.
1 = Selection is done.
• MOSCRCS: Main On-Chip RC Oscillator Status
0 = Main on-chip RC oscillator is not stabilized.
1 = Main on-chip RC oscillator is stabilized.
31 30 29 28 27 26 25 24
––––––––
23 22 21 20 19 18 17 16
– – – FOS CFDS CFDEV MOSCRCS MOSCSELS
15 14 13 12 11 10 9 8
––––––PCKRDY1PCKRDY0
76543210
OSCSELS LOCKU – – MCKRDY
–
LOCKA MOSCXTS