Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X 데이터 시트
제품 코드
DK-TM4C129X
Description
Reset
Type
Name
Bit/Field
AES-CTR Mode Counter Width
Description
Value
Counter is 32 bits
0x0
Counter is 64 bits
0x1
Counter is 96 bits
0x2
Counter is 128 bits
0x3
0
RW
CTR_WIDTH
8:7
Counter Mode
This bit must also be set for GCM and CCM mode, when
encryption/decryption is required.
encryption/decryption is required.
Description
Value
Counter mode is not enabled.
0
Counter mode is enabled.
1
0
RW
CTR
6
ECB/CBC Mode
Description
Value
ECB mode
0
CBC mode
1
0
RW
MODE
5
Key Size
Description
Value
reserved
0x0
Key is 128 bits
0x1
Key is 192 bits
0x2
Key is 256 bits
0x3
0
RW
KEY_SIZE
4:3
Encryption/Decryption Selection
If set to
DIRECTION
=1, an encrypt operation is performed. If set to 0,
a decrypt operation is performed.
Description
Value
Decryption is selected.
0
Encryption is selected.
1
0
RW
DIRECTION
2
Input Ready Status
Description
Value
Input buffer is not empty.
0
Indicates that the 16-byte input buffer is empty, and the host is
permitted to write the next block of data.
permitted to write the next block of data.
1
0
RO
INPUT_READY
1
December 13, 2013
1016
Texas Instruments-Advance Information
Advance Encryption Standard Accelerator (AES)