Rainbow Electronics AT91CAP9S250A User Manual
Page 373
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373
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
29.9.9
PMC Clock Generator Main Clock Frequency Register
Register Name:
CKGR_MCFR
Access Type:
Read-only
• MAINF: Main Clock Frequency
Gives the number of Main Clock cycles within 16 Slow Clock periods.
• MAINRDY: 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
–
–
–
–
–
–
–
MAINRDY
15
14
13
12
11
10
9
8
MAINF
7
6
5
4
3
2
1
0
MAINF
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