AT91SAM9G45PRE Datasheet, PDF (320/1218 Pages) ATMEL Corporation – DDR2 Controller 4-bank DDR2/LPDDR, SDRAM/LPSDR

25.11.9 PMC Clock Generator Main Clock Frequency Register
Register Name:CKGR_MCFR
Address: 0xFFFFFC24
Access Type:Read-only
31
30
29
28
27
26
–
–
–
–
–
–
23
22
21
20
19
18
–
–
–
–
–
–
15
14
13
12
11
10
MAINF
7
6
5
4
3
2
MAINF
• 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.
25
24
–
–
17
16
–
MAINRDY
9
8
1
0
320 AT91SAM9G45
6438F–ATARM–21-Jun-10