SAM3SD8B Atmel Corporation, SAM3SD8B Datasheet - Page 477
SAM3SD8B
Manufacturer Part Number
SAM3SD8B
Description
Manufacturer
Atmel Corporation
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25.1.16.13
Name:
Address:
Access:
This register can only be written if the WPEN bit is cleared in
• CSS: Master Clock Source Selection
• PRES: Programmable Clock Prescaler
11090A–ATARM–10-Feb-12
11090A–ATARM–10-Feb-12
31
23
15
–
–
–
7
–
Value
Value
0
1
2
3
4
0
1
2
3
4
5
6
PMC Programmable Clock Register
PMC_PCKx
0x400E0440
Read-write
Name
SLOW_CLK
MAIN_CLK
PLLA_CLK
PLLB_CLK
MCK
Name
CLK_1
CLK_2
CLK_4
CLK_8
CLK_16
CLK_32
CLK_64
30
22
14
–
–
–
6
PRES
29
21
13
–
–
–
5
Description
Slow Clock is selected
Main Clock is selected
PLLA Clock is selected
PLLB Clock is selected
Master Clock is selected
Description
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
28
20
12
–
–
–
4
“PMC Write Protect Mode Register”
27
19
11
–
–
–
3
–
26
18
10
–
–
–
2
SAM3S8/SD8
SAM3S8/SD8
CSS
.
25
17
–
–
–
9
1
24
16
–
–
–
8
0
477
477
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