Datasheet

Register 9: DES Control (DES_CTRL), offset 0x020
DES Control (DES_CTRL)
Base 0x4403.8000
Offset 0x020
Type RW, reset 0x8000.0000
16171819202122232425262728293031
reservedCONTEXT
RRRRRRRRRRRRRRRRType
0000000000000001Reset
0123456789101112131415
OUTPUT_READY
INPUT_READY
DIRECTION
TDESMODEreserved
RRRWRWRWRWRRRRRRRRRRType
0000000000000000Reset
DescriptionResetTypeNameBit/Field
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.
1RCONTEXT31
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.
0Rreserved30:6
Select CBC, ECB or CFB mode0x0: ECB mode0x1: CBC mode0x2:
CFB mode0x3: reserved
0RWMODE5:4
Select DES or triple DES encryption/decryption.0x0: DES
mode0x1:TDESmode
0RWTDES3
Select encryption/decryption 0x0: decryption is selected0x1: Encryption
is selected
0RWDIRECTION2
When 1, ready to encrypt/decrypt data0RINPUT_READY1
When 1, Data decrypted/encrypted ready0ROUTPUT_READY0
1029June 18, 2014
Texas Instruments-Production Data
Tiva
™
TM4C129ENCPDT Microcontroller