Atmel SAM4S Xplained Pro Starter Kit Atmel ATSAM4S-XSTK ATSAM4S-XSTK Hoja De Datos
Los códigos de productos
ATSAM4S-XSTK
472
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
28.2.16.1PMC System Clock Enable Register
Name:
PMC_SCER
Address:
0x400E0400
Access:
Write-only
This register can only be written if the WPEN bit is cleared in
.
• UDP: USB Device Port Clock Enable
0 = No effect.
1 = Enables the 48 MHz clock (UDPCK) of the USB Device Port.
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
–
–
–
–
–
–
–