at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 151

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

PMC Programmable Clock Register 0 to 3
Register Name: PMC_PCK0 - PMC-PCK3
Access Type:
• CSS: Master Clock Selection
• PRES: Programmable Clock Prescaler
1790A–ATARM–11/03
31
23
15
–
–
–
–
7
0
0
0
0
1
1
1
1
Read/Write
0
0
1
1
30
22
14
–
–
–
6
–
29
21
13
–
–
–
5
–
PRES
CSS
0
0
1
1
0
0
1
1
28
20
12
–
–
–
4
0
1
0
1
PRES
0
1
0
1
0
1
0
1
27
19
11
–
–
–
3
Clock Source Selection
Slow Clock is selected
Main Clock is selected
PLL A Clock is selected
PLL B Clock is selected
Master Clock
Selected clock
Selected clock divided by 2
Selected clock divided by 4
Selected clock divided by 8
Selected clock divided by 16
Selected clock divided by 32
Selected clock divided by 64
Reserved
26
18
10
–
–
–
2
AT91RM3400
25
17
–
–
9
–
1
CSS
24
16
–
–
–
8
0
151