31.2.9.2 ECC Double Error Detected (FFLTSYN.DSERR)

When Read w/ ECC or Read w/Parity is active (i.e. not OFF/Bypass) and a read from flash memory results in an ECC DED, the FCR returns a bus error to the initiator. The error is returned in-band with the data and the initiator determines how to handle the corrupted data.

For the ECC DED, read data is loaded into the read buffer, prefetch buffer, or cache (depending on implementation) with a DED tag so subsequent reads of the address also cause bus errors. In the case of a prefetch, the error is only reported if the address is actually read.