52.5.3.2 Unspecified Register Access Detection

When an unspecified register access occurs, TZAESB_ISR.URAD rises. Its source is then reported in TZAESB_ISR.URAT. Only the last unspecified register access is available through TZAESB_ISR.URAT.

Several kinds of unspecified register accesses can occur:

Mode register written during data processing
Mode register written during sub-keys generation
Write-only register read access

TZAESB_ISR.URAD and TZAESB_ISR.URAT can only be reset by TZAESB_CR.SWRST.

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