54.4.10.1 Unspecified Register Access Detection

When an unspecified register access occurs, the URAD bit in the SHA_ISR is set. Its source is then reported in the Unspecified Register Access Type field (URAT). Only the last unspecified register access is available through the URAT field.

Several kinds of unspecified register accesses can occur:

• SHA_IDATARx written during data processing in DMA mode
• SHA_IODATARx read during data processing
• SHA_MR written during data processing
• Write-only register read access

The URAD bit and the URAT field can only be reset by the SWRST bit in the SHA_CR.