CC2430 Datasheet, PDF (140/212 Pages) Texas Instruments – A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee-TM

CC2430
Peripherals : AES Coprocessor
ENCCS (0xB3) – Encryption Control and Status
Bit Name
7_-
6:4 _MODE[2:0]
3 _RDY
2:1 _CMD[1:0]
0 _ST
Reset
0
000
1
0
0
R/W
R0
R/W
R
R/W
R/W1
H0
Description
Not used, always read as 0
Encryption/decryption mode
000 CBC
001 CFB
010 OFB
011 CTR
100 ECB
101 CBC MAC
110 Not used
111 Not used
Encryption/decryption ready status
0
Encryption/decryption in progress
1
Encryption/decryption is completed
Command to be performed when a 1 is written to ST.
00 encrypt block
01 decrypt block
10 load key
11 load IV/nonce
Start processing command set by CMD. Must be issued for each
command or 128 bits block of data. Cleared by hardware
ENCDI (0xB1) – Encryption Input Data
Bit Name
7:0 _DIN[7:0]
Reset R/W
0x00 R/W
Description
Encryption input data
ENCDO (0xB2) – Encryption Output Data
Bit Name
7:0 _DOUT[7:0]
Reset R/W
0x00 R/W
Description
Encryption output data
CC2430 Data Sheet (rev. 2.1) SWRS036F
Page 140 of 211