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Olee01's avatar
Olee01
Icon for New Contributor rankNew Contributor
6 years ago
Solved

NIOS II cannot run from an external memory QSPI?

I've created the design based on this document but it is not working https://www.eeweb.com/app-notes/download/169865
  • FawazJ_Altera's avatar
    FawazJ_Altera
    6 years ago

    Hello.

    I would check the following items:

    1- Make sure Nios II reset vector and exception vector are both pointing to QSPI

    2- Make sure you use 25MHZ clock as maximum to the QSPI IP.

    3- Try to use PLL for your system clocking. One clock would be for the system.

    Please let me know if any of the debug steps would help.

FawazJ_Altera's avatar
FawazJ_Altera
Icon for Frequent Contributor rankFrequent Contributor
6 years ago

Hello.

I would check the following items:

1- Make sure Nios II reset vector and exception vector are both pointing to QSPI

2- Make sure you use 25MHZ clock as maximum to the QSPI IP.

3- Try to use PLL for your system clocking. One clock would be for the system.

Please let me know if any of the debug steps would help.