Datasheet

SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
644
31.6.7 AES Key Word Register x
Name: AES_KEYWRx
Address: 0x40004020
Access: Write-only
 KEYW: Key Word
The four/six/eight 32-bit Key Word Registers set the 128-bit/192-bit/256-bit cryptographic key used for
encryption/decryption.
AES_KEYWR0 corresponds to the first word of the key and respectively AES_KEYWR3/AES_KEYWR5/AES_KEYWR7 to
the last one.
These registers are write-only to prevent the key from being read by another application.
31 302928 27 26 25 24
KEYW
23 22 21 20 19 18 17 16
KEYW
15 14 13 12 11 10 9 8
KEYW
76543 210
KEYW