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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