This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMS320C6678: I request you to review the circuit configuration of tms320c6678 and EMIF16 NOR Falsh.

Part Number: TMS320C6678


I am going to build the tms320c6678 development board.

EMIF16 will be implemented with NOR Flash.

I request you to review the circuit configuration of tms320c6678 and EMIF16 NOR Falsh.

I need help.

  • Part Number: TMS320C6678

    I am going to build the tms320c6678 development board.

    EMIF16 will be implemented with NOR Flash.

  • Guidance on connecting EMIF NOR to EMIFA is provided here:

    https://processors.wiki.ti.com/index.php/Connecting_NOR_Flash_to_OMAP-L138

    The same EMIFA is also available on C6678 so the same also applies to this device. Please note that if EMIF NOR Is being used for booting then it needs to be connected to CE0/CS2 as indicated in the Bootloader application notes:

    https://www.ti.com/lit/ug/sprugy5c/sprugy5c.pdf (Section 3.3)

    Hope this helps.

    Regards,

    Rahul   

  • Thank you for answer. Rahul

    One more question.


    1. Is the EMIF BE line open or correct?

    2. Is it correct that the EMIF WAIT line is connected to the RDY of NOR FLASH?

    3. Is it correct to connect EMIFCE2 and F-CE of NOR Flash? Please review.

  • hello ,

    ahn99 said:
    1. Is the EMIF BE line open or correct?

    Please ensure that the memory you are connecting to doesn't need this, but from the schematic, it doesn't look like it uses BE.  The signals from the EMIF are there.  Please refer to section 2.5 of the EMIF16 User Guide (https://www.ti.com/lit/pdf/sprugz3) for information on how the BE lines behave during operation.  

    ahn99 said:
    2. Is it correct that the EMIF WAIT line is connected to the RDY of NOR FLASH?

    That appears to be for a burst mode that is available on the flash memory it is connected to, please refer to the flash memory datasheet for this.  If you notice in the schematic above, the resistor is not installed (R389 is NC) that connects the wait to the RDY input. 

    ahn99 said:
    3. Is it correct to connect EMIFCE2 and F-CE of NOR Flash? Please review.

    Again, you will need to review the connected memory datasheet to ensure you connect the CS correctly it it, but if you are booting from the NOR flash then yes, you will need to use CS2 as Rahul indicated above.