TM4C129XNCZAD Datasheet, PDF (1057/2191 Pages) Texas Instruments – Tiva Microcontroller

Tiva^™ TM4C129XNCZAD Microcontroller
Register 9: DES Control (DES_CTRL), offset 0x020
DES Control (DES_CTRL)
Base 0x4403.8000
Offset 0x020
Type RW, reset 0x8000.0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
CONTEXT
reserved
Type
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Reset
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
reserved
MODE
TDES DIRECTION
Type
R
R
R
R
R
R
R
R
R
R
RW
RW
RW
RW
R
R
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31
30:6
5:4
3
2
1
0
Name
CONTEXT
reserved
Type
R
R
MODE
RW
TDES
RW
DIRECTION
RW
INPUT_READY
R
OUTPUT_READY
R
Reset
1
0
0
0
0
0
0
Description
If 1, this read-only status bit indicates that the context data registers can
be overwritten and the host is permitted to write the next context.
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
Select CBC, ECB or CFB mode0x0: ECB mode0x1: CBC mode0x2:
CFB mode0x3: reserved
Select DES or triple DES encryption/decryption.0x0: DES
mode0x1:TDESmode
Select encryption/decryption 0x0: decryption is selected0x1: Encryption
is selected
When 1, ready to encrypt/decrypt data
When 1, Data decrypted/encrypted ready
June 18, 2014
Texas Instruments-Production Data
1057