at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 310

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

26.9.15
Register Name:PMC_SR
Access Type:Read-only
• MOSCS: Main Oscillator Status
0 = Main oscillator is not stabilized.
1 = Main oscillator is stabilized.
• LOCKA: PLL A Lock Status
0 = PLL A is not locked
1 = PLL A is locked.
• LOCKB: PLL B Lock Status
0 = PLL B is not locked.
1 = PLL B is locked.
• MCKRDY: Master Clock Status
0 = Master Clock is not ready.
1 = Master Clock is ready.
• OSC_SEL: Slow Clock Oscillator Selection
0 = Internal slow clock RC oscillator.
1 = External slow clock 32 kHz oscillator.
• PCKRDYx: Programmable Clock Ready Status
0 = Programmable Clock x is not ready.
1 = Programmable Clock x is ready.
310
OSC_SEL
31
23
15
–
–
7
-
AT91SAM9G20 Preliminary
PMC Status Register
30
22
14
–
–
6
-
-
29
21
13
–
–
5
-
-
28
20
12
–
–
4
-
-
MCKRDY
27
19
11
–
–
3
-
LOCKB
26
18
10
–
–
2
-
PCKRDY1
LOCKA
25
17
–
–
9
1
6384B–ATARM–15-Dec-08
PCKRDY0
MOSCS
24
16
–
–
8
0