SAM4L Datasheet, PDF (1002/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

38.7.2 Configuration Register
Name:
CFG
Access Type:
Read/Write
Offset:
0x04
Reset Value:
0x00000000
ATSAM4L4/L2
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
-
-
-
-
PRESCAL
7
6
5
4
3
2
1
0
-
CLKSEL
SPEED
REFSEL
-
• PRESCAL: Prescaler Rate Slection
PRESCAL
000
001
010
011
100
101
110
111
Group Configuration
DIV4
DIV8
DIV16
DIV32
DIV64
DIV128
DIV256
DIV512
System clock division factor
4
8
16
32
64
128
256
512
• CLKSEL: Clock Selection for sequencer/ADC cell
1: The APB clock is used
0: The Generic clock is used
42023C–SAM–02/2013
1002