1 pmc system clock enable register – Rainbow Electronics AT91CAP9S250A User Manual
Page 366
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366
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
29.9.1
PMC System Clock Enable Register
Register Name:
PMC_SCER
Access Type:
Write-only
• UHP: USB Host Port Clock Enable
0 = No effect.
1 = Enables the 12 and 48 MHz clock of the USB Host Port.
• PCKx: Programmable Clock x Output Enable
0 = No effect.
1 = Enables 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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