1.4.2 ECC Operation in User Cryptoprocessor RAMs
(Ask a Question)The User Cryptoprocessor's built-in RAMs support ECC for single bit error correction and dual bit error detection. The User Cryptoprocessor can be used in the design by instantiating PF_CRYPTO macro in the design. In the event of a correctable error, the operation of the core will not be interrupted. Uncorrectable error detection causes an immediate halt of the current operation and automatic purge of the User Cryptoprocessor. The ALARM output signal of PF_CRYPTO gets set in the event of uncorrectable error detection. The purge operation zeroizes all the internal memories. An automatic soft reset is issued after completion of the purge operation. The COMPLETE output is asserted upon completion of the purge operation. All the cryptographic operations are performed through TeraFire cryptographic application library (CAL) functions and the CALPKTrfRes function is used to complete an operation. The CALPKTrfRes function returns an error code in the event of an alarm.
For more information about CAL functions, see Athena TeraFire Cryptographic Algorithm Library (CAL) Users Guide.