at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 141

• Manufacturer Part Number: at91rm3400
• Description: Atmel Advanced At91 Arm Microcontroller
• Manufacturer: ATMEL Corporation

PMC System Clock Enable Register
Register Name: PMC_SCER
Access Type:
• PCK: Processor Clock Enable
0 = No effect.
1 = Enables the Processor Clock.
• UDP: USB Device Port Clock Enable
0 = No effect.
1 = Enables the 48 MHz clock of the USB Device Port.
• MCKUDP: USB Device Port Master Clock Automatic Disable on Suspend Enable
0 = No effect.
1 = Enables the automatic disable of the Master Clock of the USB Device Port when a suspend condition occurs.
• UHP: USB Host Port Clock Enable
0 = No effect.
1 = Enables the 48 MHz clock of the USB Host Port.
• PCK0...PCK3: Programmable Clock Output Enable
0 = No effect.
1 = Enables the corresponding Programmable Clock output.
1790A–ATARM–11/03
31
23
15
–
–
–
–
7
Write-only
30
22
14
–
–
–
6
–
29
21
13
–
–
–
5
–
UHP
28
20
12
–
–
–
4
PCK3
27
19
11
–
–
–
3
MCKUDP
PCK2
26
18
10
–
–
2
PCK1
AT91RM3400
UDP
25
17
–
–
9
1
PCK0
PCK
24
16
–
–
8
0
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