Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK 数据表
产品代码
ATSAM4L-XSTK
245
42023E–SAM–07/2013
ATSAM4L8/L4/L2
13.7.22
Fractional Prescaler Control Register
Name: FPCR
Access Type:
Read/Write
Reset Value:
0x00000000
• CKSEL: Clock input selection
This field selects the Clock input for the prescaler. See the “FP clock sources” table in the SCIF Module Configuration section for
details. It must not be changed if the FPEN is one.
• FPEN: High Resolution Prescaler Enable
0: The Fractional Prescaler is disabled.
1: The Fractional Prescaler is enabled.
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
-
-
-
-
CKSEL
FPEN