2 pmc system clock disable register – Rainbow Electronics AT91CAP9S250A User Manual
Page 367
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367
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
29.9.2
PMC System Clock Disable Register
Register Name:
PMC_SCDR
Access Type:
Write-only
• PCK: Processor Clock Disable
0 = No effect.
1 = Disables the Processor clock. This is used to enter the processor in Idle Mode.
• UHP: USB Host Port Clock Disable
0 = No effect.
1 = Disables the 12 and 48 MHz clock of the USB Host Port.
• 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
–
–
–
–
PCK3
PCK2
PCK1
PCK0
7
6
5
4
3
2
1
0
–
UHP
–
–
–
–
–
PCK
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