Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK 数据表
产品代码
ATSAM4L-XSTK
244
42023E–SAM–07/2013
ATSAM4L8/L4/L2
13.7.21
High Resolution Prescaler Control Register
Name: HRPCR
Access Type:
Read/Write
Reset Value:
0x00000000
• HRCOUNT: High Resolution Counter
Specify the input clock period to count to generate the output clock edge.
HRCOUNT can be written to dynamically in order to tune the HRPCLK frequency on-the-go.
• CKSEL: Clock input selection
This field selects the Clock input for the prescaler. See the “HRP clock sources” table in the SCIF Module Configuration section
for details. It must not be changed if the HRPEN is one.
• HRPEN: High Resolution Prescaler Enable
0: The High Resolution Prescaler is disabled.
1: The High Resolution Prescaler is enabled.
31
30
29
28
27
26
25
24
HRCOUNT[23:16]
23
22
21
20
19
18
17
16
HRCOUNT[15:8]
15
14
13
12
11
10
9
8
HRCOUNT[7:0]
7
6
5
4
3
2
1
0
-
-
-
-
CKSEL
HRPEN