3 pmc system clock status register – Rainbow Electronics AT91CAP9S250A User Manual
Page 368
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368
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
29.9.3
PMC System Clock Status Register
Register Name:
PMC_SCSR
Access Type:
Read-only
• PCK: Processor Clock Status
0 = The Processor clock is disabled.
1 = The Processor clock is enabled.
• UHP: USB Host Port Clock Status
0 = The 12 and 48 MHz clock (UHPCK) of the USB Host Port is disabled.
1 = The 12 and 48 MHz clock (UHPCK) of the USB Host Port is enabled.
• PCKx: Programmable Clock x Output Status
0 = The corresponding programmable clock output is disabled.
1 = The corresponding programmable clock output is enabled.
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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