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SAM7X128_14 Datasheet, PDF (190/662 Pages) ATMEL Corporation – ARM-based Flash MCU | |||
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25.9.11 PMC Programmable Clock Register
Register Name:
PMC_PCKx
Access Type:
Read-write
31
30
29
28
â
â
â
â
23
22
21
20
â
â
â
â
15
14
13
12
â
â
â
â
7
6
5
4
â
â
â
⢠CSS: Master Clock Selection
CSS
0
0
0
1
1
0
1
1
⢠PRES: Programmable Clock Prescaler
PRES
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
27
26
â
â
19
18
â
â
11
10
â
â
3
2
PRES
25
24
â
â
17
16
â
â
9
8
â
â
1
0
CSS
Clock Source Selection
Slow Clock is selected
Main Clock is selected
Reserved
PLL Clock is selected
Programmable Clock
0
Selected clock
1
Selected clock divided by 2
0
Selected clock divided by 4
1
Selected clock divided by 8
0
Selected clock divided by 16
1
Selected clock divided by 32
0
Selected clock divided by 64
1
Reserved
SAM7X Series [DATASHEET]
6120KâATARMâ11-Feb-14
190
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