Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
199
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
22.12.12 USB Clock Register
Name:
PMC_USB
Address:
0xFFFFFC38
Access:
Read-write
• USBS: USB OHCI Input Clock Selection
0: USB Clock disabled.
1: USB Clock Input is PLLB.
• USBDIV: Divider for USB Clock
USB Clock is Input Clock divided by USBDIV+1.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
USBDIV
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
USBS