Basic question on Salvator-XS EVB flash

Hi,

Just got my Salvator-XS EVB and noticed it contains 16MB QSPI flash (U5) and 64MB hyperflash (U16).

It seems that Hyperflash is faster than QSPI flash and the size is also bigger.

So I am wondering the rationale behind --- why we have both U5 and U16? Are they both needed in a production board?

Regards,

yf

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  • Hi yf,

    you don't need both in a production board. Alternatively you could also boot from eMMC and not use QSPI or HyperFlash

    Michael

  • Michael,

    Thanks for the prompt answer!

    Can you teach if using Hyperflash plus eMMC is a common combination? The hyperflash is fast for booting and eMMC is bigger for later use.

    Also it seems that a miniMonitor lives in U5 QSPI flash, when U5 is absent, can we still use miniMonitor on Hyperflash?

    Regards,

    Yanfeng

     

  • Hello Yanfeng,

    The combination Hyperflash + eMMC is possible. It really depends on you priorities. Is fast booting more important that the BOM cost?

    You can also download the MiniMonitor or Flashwriter to the unit via SCIF or USB everytime you need it. It does not need to live in flash.

    You can only have on SW boot from Hyperflash either your product SW or the MiniMonitor because you have a fixed boot sector which is loaded during boot.

    Best regards,

    Michael

  • Michael,

    Thank you. We can close this ticket.

    Yanfeng

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