TM4C129XNCZAD Datasheet, PDF (1058/2191 Pages) Texas Instruments – Tiva Microcontroller

Data Encryption Standard Accelerator (DES)
Register 10: DES Cryptographic Data Length (DES_LENGTH), offset 0x024
Indicates the cryptographic data length in bytes for all modes. Once processing is started with this
context, this length decrements to zero. Data lengths up to (232 - 1) bytes are allowed. A write to
this register triggers the engine to start using this context.
Note: A read of this register returns all zeros.
DES Cryptographic Data Length (DES_LENGTH)
Base 0x4403.8000
Offset 0x024
Type RW, reset 0x0000.0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
LENGTH
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
0
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
LENGTH
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:0
Name
LENGTH
Type
Reset Description
RW 0x00000000 Cryptographic data length in bytes for all modes
1058
Texas Instruments-Production Data
June 18, 2014