Atmel SAM4S Xplained Pro Starter Kit Atmel ATSAM4S-XSTK ATSAM4S-XSTK Data Sheet
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Product codes
ATSAM4S-XSTK
474
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
28.2.16.3PMC System Clock Status Register
Name:
PMC_SCSR
Address:
0x400E0408
Access:
Read-only
• UDP: USB Device Port Clock Status
0 = The 48 MHz clock (UDPCK) of the USB Device Port is disabled.
1 = The 48 MHz clock (UDPCK) of the USB Device 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
–
–
–
–
–
PCK2
PCK1
PCK0
7
6
5
4
3
2
1
0
UDP
–
–
–
–
–
–
–