Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Scheda Tecnica

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AT91SAM9X25-EK
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SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
22.13.9 PMC Clock Generator Main Clock Frequency Register 
Name:
CKGR_MCFR
Address:
0xFFFFFC24
Access:
Read-only 
• MAINF: Main Clock Frequency
Gives the number of Main Clock cycles within 16 Slow Clock periods.
• MAINFRDY: Main Clock Ready
0 = MAINF value is not valid or the Main Oscillator is disabled.
1 = The Main Oscillator has been enabled previously and MAINF value is available.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
MAINFRDY
15
14
13
12
11
10
9
8
MAINF
7
6
5
4
3
2
1
0
MAINF