Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
166
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
20.4.1 Slow Clock Configuration Register
Name:
SCKC_CR
Address:
0xFFFFFE50
Access:
Read-write
• RCEN: Internal 32 kHz RC Oscillator
0: 32 kHz RC oscillator is disabled.
1: 32 kHz RC oscillator is enabled.
• OSC32EN: 32768 Hz Oscillator
0: 32768 Hz oscillator is disabled.
1: 32768 Hz oscillator is enabled.
• OSC32BYP: 32768Hz Oscillator Bypass
0: 32768 Hz oscillator is not bypassed.
1: 32768 Hz oscillator is bypassed, accept an external slow clock on XIN32.
• OSCSEL: Slow Clock Selector
0 (RC): Slow clock is internal 32 kHz RC oscillator.
1 (XTAL): Slow clock is 32768 Hz oscillator.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
–
–
–
–
OSCSEL
OSC32BYP
OSC32EN
RCEN