Datasheet

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
76543210
- - - - - NEWMSG DKEYGEN ENABLE