Atmel /AT91SAM9M11 /AES /MR

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Interpret as MR

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 (CIPHER)CIPHER 0PROCDLY0 (MANUAL_START)SMOD 0 (AES128)KEYSIZE 0 (ECB)OPMOD0 (LOD)LOD 0 (SIZE_128BIT)CFBS0CKEY0 (NOPROT_EXTXKEY)CMTYP1 0 (NO_PAUSE)CMTYP2 0 (NO_DUMMY)CMTYP3 0 (NO_RESTART)CMTYP4 0 (NO_ADDACCESS)CMTYP5

CMTYP3=NO_DUMMY, CMTYP5=NO_ADDACCESS, CFBS=SIZE_128BIT, CMTYP4=NO_RESTART, CMTYP1=NOPROT_EXTXKEY, KEYSIZE=AES128, SMOD=MANUAL_START, CMTYP2=NO_PAUSE, OPMOD=ECB

Description

Mode Register

Fields

CIPHER

Processing Mode

PROCDLY

Processing Delay

SMOD

Start Mode

0 (MANUAL_START): Manual Mode

1 (AUTO_START): Auto Mode

2 (IDATAR0_START): AES_IDATAR0 access only Auto Mode

KEYSIZE

Key Size

0 (AES128): AES Key Size is 128 bits

1 (AES192): AES Key Size is 192 bits

2 (AES256): AES Key Size is 256 bits

OPMOD

Operation Mode

0 (ECB): ECB: Electronic Code Book mode

1 (CBC): CBC: Cipher Block Chaining mode

2 (OFB): OFB: Output Feedback mode

3 (CFB): CFB: Cipher Feedback mode

4 (CTR): CTR: Counter mode (16-bit internal counter)

LOD

Last Output Data Mode

CFBS

Cipher Feedback Data Size

0 (SIZE_128BIT): 128-bit

1 (SIZE_64BIT): 64-bit

2 (SIZE_32BIT): 32-bit

3 (SIZE_16BIT): 16-bit

4 (SIZE_8BIT): 8-bit

CKEY

Countermeasure Key

CMTYP1

CounterMeasure Type 1

0 (NOPROT_EXTXKEY): Counter-Measure type 1 is disabled

1 (PROT_EXTKEY): Counter-Measure type 1 is enabled

CMTYP2

CounterMeasure Type 2

0 (NO_PAUSE): Counter-Measure type 2 is disabled

1 (PAUSE): Counter-Measure type 2 is enabled

CMTYP3

CounterMeasure Type 3

0 (NO_DUMMY): Counter-Measure type 3 is disabled

1 (DUMMY): Counter-Measure type 3 is enabled

CMTYP4

CounterMeasure Type 4

0 (NO_RESTART): Counter-Measure type 4 is disabled

1 (RESTART): Counter-Measure type 4 is enabled

CMTYP5

CounterMeasure Type 5

0 (NO_ADDACCESS): Counter-Measure type 5 is disabled

1 (ADDACCESS): Counter-Measure type 5 is enabled

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