Datasheet

901

32072H–AVR32–10/2012

AT32UC3A3

• SMOD: Start Mode

• PROCDLY: Processing Delay

The processing time represents the number of clock cycles that the AES needs in order to perform one encryption/decryption

with no countermeasures activated:

The best performance is achieved with PROCDLY equal to 0.

Writing a value to this field will update the processing time.

Reading this field will give the current processing delay.

• CIPHER: Processing Mode

0: Decrypts data is enabled.

1: Encrypts data is enabled.

SMOD Description

0 Manual mode

1 Automatic mode

DMA mode

• LOD = 0: The encrypted/decrypted data are available at the address specified in the

configuration of DMA Controller.

• LOD = 1: The encrypted/decrypted data are available in the ODATAnR registers.

3 Reserved

Processing Time 12 PROCDLY 1+()×=