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AM623: QSPI boot mode configure issue

Daniel Cheng1
Mastermind 6445 points
Part Number: AM623

Tool/software:

Hi Expert,

The customer is expected to use QPSI boot mode

Refer to the boot mode configure file for Bit8 lclk settings. Customer selects QSPI Flash without DQS signal, so it should be set to "0"

However, the document mentions that the LBCLKO signal will need to be used

Because EVB is an OSPI Flash with DQS, there is no special indication on how to use QSPI flash without DQS signal.

I would like to ask how to use this LBCLKO? Where should I pull this signal? 

Thanks

Daniel

  • 0
    TI__Guru**** 169244 points

    Hello Daniel,

    Thank you for the query.

    Please refer to the below section of the data sheet

    9.2.2 OSPI/QSPI/SPI Board Design and Layout Guidelines

    Figure 9-2. OSPI Connectivity Schematic for External Board Loopback

    Regards,

    Sreenivasa