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Connect to C6713 board boot from Flash

alex shultz
Prodigy 40 points

We have a board with c6713  and  a Flash memory  AMD Am29LV400B (now is Spansion F29AL016J70).

The configuration is boot from Flash.

When a new boards comes from assembly  and we try to connect to the board for burning the our software to the Flash 

sometimes the connect is not success and we need to try a lot of power off and power on and reconnect

till it success.

When the Flash is burned  with our software the connect is success the first time.

Is there a way to success with the first connect after the board come from the assembly?


  • 0
    Intellectual 600 points

    we had this issue as well. i think it was solved by writing some initial code into the flash by through jtag (not the blackhawk)

  • 0 in reply to 1768011
    TI__Guru* 84110 points

    Alex,

    When there is no valid code written in the boot Flash memory, you will need to use the Emulation Boot mode for the best reliability of controlling the device with the emulator. If you use pull-up resistors for the BOOTMODE pins, then you may be able to make a test fixture that will apply a stronger pull-down for the boot mode selection when programming the boards the first time.

     

    To 1768011,

    Why do you make the comment "not the blackhawk"? The BlackHawk emulators have been very good and reliable, in my experience. They would be one brand of several that would be good to use for this purpose, so I would like to understand the reason your statement.

     

    Regards,
    RandyP

  • 0 in reply to RandyP
    Prodigy 40 points

    Hi  RandyP,

    Thank's for your help.

    We configure the device BOOTMODE  to Emulation boot ( HD[4:3] = 00 ) and then we could always connet to device.

    Alex Shultz

  • 0 in reply to RandyP
    Intellectual 600 points

    RandyP said:

    To 1768011,

    Why do you make the comment "not the blackhawk"? The BlackHawk emulators have been very good and reliable, in my experience. They would be one brand of several that would be good to use for this purpose, so I would like to understand the reason your statement.

    Let me explain this: we use the blackhawk as an emulator for Ti DSPs, but we don't use it to write the initial boot code to the flash-chip.

  • 0 in reply to 1768011
    TI__Guru* 84110 points

    1768011,

    Thank you for the explanation. I understand now.

    If you still have a question or problem with your system, please post it to a new thread since this one has been marked answered.

    Regards,
    RandyP