Atmel SAM9X25, Manual

Page: 209 / 1145

209
11054A–ATARM–27-Jul-11
SAM9X25
209
11054A–ATARM–27-Jul-11
SAM9X25
22.13.17 PMC 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.
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
– – – – – – PCKRDY1 PCKRDY0
7 6 5 4 3 2 1 0
OSCSELS LOCKU – – MCKRDY
–
LOCKA MOSCXTS