Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Data Sheet
Product codes
AT91SAM9X25-EK
189
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
22.13.2 PMC System Clock Disable Register
Name:
PMC_SCDR
Address:
0xFFFFFC04
Access:
Write-only
• PCK: Processor Clock Disable
0 = No effect.
1 = Disables the Processor clock. This is used to enter the processor in Idle Mode.
• DDRCK: DDR Clock Disable
0 = No effect.
1 = Disables the DDR clock.
• SMDCK: SMD Clock Disable
0 = No effect.
1 = Disables the soft modem clock.
• UHP: USB Host OHCI Clock Disable
0 = No effect.
1 = Disables the UHP48M and UHP12M OHCI clocks.
• UDP: USB Device Clock Enable
0 = No effect.
1 = Disables the USB Device clock.
• PCKx: Programmable Clock x Output Disable
0 = No effect.
1 = Disables the corresponding Programmable Clock output.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
PCK1
PCK0
7
6
5
4
3
2
1
0
UDP
UHP
–
SMDCK
–
DDRCK
–
PCK