Rainbow Electronics AT91CAP9S250A - Manual (Page 373)

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