Does the Stratix 10 Mailbox Client IP automatically send a Flash write enable command before a QSPI_WRITE or QSPI_ERASE command? - Does the Stratix 10 Mailbox Client IP automatically send a Flash write enable command before a QSPI_WRITE or QSPI_ERASE command? Replies: Re: Does the Stratix 10 Mailbox Client IP automatically send a Flash write enable command before a QSPI_WRITE or QSPI_ERASE command? Hi Craig May, Yes, the IP will automatically do write enable for all the command that require write enable. Regards, YL Replies: Re: Does the Stratix 10 Mailbox Client IP automatically send a Flash write enable command before a QSPI_WRITE or QSPI_ERASE command? Thank you for clarifying that, I'm sorry I misunderstood your first answer. Is it also true for the QSPI_WRITE_DEVICE_REG command? Replies: Re: Does the Stratix 10 Mailbox Client IP automatically send a Flash write enable command before a QSPI_WRITE or QSPI_ERASE command? Hi Craig May, Yes, the IP will automatically send the write enable command before QSPI_WRITE and QSPI Erase. Regards, YL Replies: Re: Does the Stratix 10 Mailbox Client IP automatically send a Flash write enable command before a QSPI_WRITE or QSPI_ERASE command? I am not asking about the ISR. I am referring to the write enable in a flash memory device that must be set before performing a write or erase to that device. The rsu1.tcl script pointed to in the document you link to ( https://www.intel.com/content/dam/altera-www/global/en_US/others/support/devices/configuration/rsu1.tcl ) does not seem to send the write enable command, hence my original question. Replies: Re: Does the Stratix 10 Mailbox Client IP automatically send a Flash write enable command before a QSPI_WRITE or QSPI_ERASE command? Hi Craig, Yes, you are right. You will need to check the Interupt Status Register status before you proceed for the next write command. https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug-20087.pdf (Page 11) Regards, YL