Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK Data Sheet
Product codes
ATSAM4L-XSTK
444
42023E–SAM–07/2013
ATSAM4L8/L4/L2
18.5.9
Initialization Vector Registers
Name: INITVECTn
Access Type: Write-only
Offset:
0x40 + (n * 0x04)
Reset Value:
0x00000000
• INITVECTn: Initialization Vector Word n
This register stores the n
th
word of the initialization vector or counter used by all confidentiality modes of operation, except the
ECB operation mode:
31
30
29
28
27
26
25
24
INITVECTn[31:24]
23
22
21
20
19
18
17
16
INITVECTn[23:16]
15
14
13
12
11
10
9
8
INITVECTn[15:8]
7
6
5
4
3
2
1
0
INITVECTn[7:0]
Confidentiality Mode of Operation
Description
CBC, OFB, CFB
Initialization vector
CTR
Counter
ECB
Not used