Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
522
29.17.1 PMC 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.
1: Enables the 48 MHz clock (UDPCK) of the USB Device Port.
• PCKx: Programmable Clock x Output Enable
0: No effect.
1: Enables the corresponding Programmable Clock output.
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
–
–
–
–
–
PCK2
PCK1
PCK0
7
6
5
4
3
2
1
0
UDP
–
–
–
–
–
–
–