Microchip Technology /ATSAMD51J19A /AES /CTRLA

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Interpret as CTRLA

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (SWRST)SWRST 0 (ENABLE)ENABLE 0 (ECB)AESMODE 0 (128BIT)CFBS0 (128BIT)KEYSIZE 0 (DEC)CIPHER 0 (MANUAL)STARTMODE 0 (NONE)LOD 0 (NONE)KEYGEN 0 (NONE)XORKEY 0CTYPE

AESMODE=ECB, CIPHER=DEC, LOD=NONE, XORKEY=NONE, STARTMODE=MANUAL, CFBS=128BIT, KEYGEN=NONE, KEYSIZE=128BIT

Description

Control A

Fields

SWRST

Software Reset

ENABLE

Enable

AESMODE

AES Modes of operation

0 (ECB): Electronic code book mode

1 (CBC): Cipher block chaining mode

2 (OFB): Output feedback mode

3 (CFB): Cipher feedback mode

4 (COUNTER): Counter mode

5 (CCM): CCM mode

6 (GCM): Galois counter mode

CFBS

Cipher Feedback Block Size

0 (128BIT): 128-bit Input data block for Encryption/Decryption in Cipher Feedback mode

1 (64BIT): 64-bit Input data block for Encryption/Decryption in Cipher Feedback mode

2 (32BIT): 32-bit Input data block for Encryption/Decryption in Cipher Feedback mode

3 (16BIT): 16-bit Input data block for Encryption/Decryption in Cipher Feedback mode

4 (8BIT): 8-bit Input data block for Encryption/Decryption in Cipher Feedback mode

KEYSIZE

Encryption Key Size

0 (128BIT): 128-bit Key for Encryption / Decryption

1 (192BIT): 192-bit Key for Encryption / Decryption

2 (256BIT): 256-bit Key for Encryption / Decryption

CIPHER

Cipher Mode

0 (DEC): Decryption

1 (ENC): Encryption

STARTMODE

Start Mode Select

0 (MANUAL): Start Encryption / Decryption in Manual mode

1 (AUTO): Start Encryption / Decryption in Auto mode

LOD

Last Output Data Mode

0 (NONE): No effect

1 (LAST): Start encryption in Last Output Data mode

KEYGEN

Last Key Generation

0 (NONE): No effect

1 (LAST): Start Computation of the last NK words of the expanded key

XORKEY

XOR Key Operation

0 (NONE): No effect

1 (XOR): The user keyword gets XORed with the previous keyword register content.

CTYPE

Counter Measure Type

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