Atmel SAM4L Xplained Pro Evaluation Kit Atmel ATSAM4L-XPRO ATSAM4L-XPRO Data Sheet
Product codes
ATSAM4L-XPRO
435
42023E–SAM–07/2013
ATSAM4L8/L4/L2
18.5.1
Control Register
Name:
CTRL
Access Type:
Read/Write
Offset:
0x00
Reset Value:
0x00000000
• SWRST: Software Reset
Writing a one to this bit resets the module.
Writing a zero to this bit has no effect.
• NEWMSG: New Message
Writing a one to this bit notifies the module that the next input data block is the beginning of a new message.
Writing a zero to this bit has no effect.
• DKEYGEN: Decryption Key Generate
Writing a one to this bit starts the computation of the last N
k
words of the expanded key
Writing a zero to this bit has no effect.
• ENABLE: Enable Module
Writing a one to this bit enables the module.
Writing a zero to this bit disables the module.
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
-
-
-
-
-
-
SWRST
7
6
5
4
3
2
1
0
-
-
-
-
-
NEWMSG
DKEYGEN
ENABLE