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AM2632: ARM-Based MCU Can't Enter Boundary Scan Mode Using The AM263.bsdl

Wilson Lai
Prodigy 10 points

Part Number: AM2632

Tool/software:

Good day to you.

I get the BSDL from the AM2632 product website. I believe it is the official BSDL file of this MCU. My purpose of getting this BSDL file is to get the MCU works in the boundary scan mode. However, the BSDL file fails to get the MCU enter the boundary scan mode. It fails at the beginning test, i.e. instruction register. 

I observe the error symptom as following: The instruction register length reported in the BSDL file of this MCU is 8 bits. The instruction registered length measured from the MCU is about 4 bits. This infers that the instruction register length of the MCU is less than then length specified in the BSDL file. Another word is the BSDL file might be the wrong one. If the instruction register error is not solved, I will not be able to progress to the next boundary scan test step.

Can you please help to resolve this error? If you do have a working BSDL file, can you please send it over to me?

If the error is not because of the BSDL file, can you please enlighten me some clues how to overcome this error and put the MCU in the boundary scan mode?

Your assistance is much appreciated. Thank you.

  • 0
    TI__Guru*** 135355 points

    Hello Wilson,

    Which exact part number are you working with using this file?

    The file on TI.com is the latest known working one to my awareness, so I'll need to reach out to some teams to understand what may have changed to cause an issue.

    Best Regards,

    Ralph Jacobi

  • 0 in reply to Ralph Jacobi
    Prodigy 10 points

    Hi Ralph Jacobi, 

    I am new to this MCU, not familiar with it. Your guidance and assistance definitely help.

    The actual P/N is: AM2632COKFHAZCZR.

    Thank you.

  • 0 in reply to Wilson Lai
    TI__Guru*** 135355 points

    Hi Wilson,

    Which boot mode do you have the device placed in? Also given the part number here, it sounds like you have this perhaps on a custom board as that isn't one of our EVM devices - if so, do you have the ability to control the SOP pins to change boot modes?

    Best Regards,

    Ralph Jacobi

  • 0 in reply to Ralph Jacobi
    Prodigy 10 points

    Hi Ralph Jacobi,

    The device is booted in the QSPI (4S) mode. All the SOP pins (SOP3, SOP2, SOP1, SOP0) are pulled down to ground, having the 0000 boot mode.

    Yes. This is not the TI EVM board. This is a custom board. The boot mode of this device is changeable by adding or removing the PU or PD resistors.

    Thank you.

  • 0 in reply to Wilson Lai
    TI__Guru*** 135355 points

    Hi Wilson,

    Okay - I am looking to confirm the exact boot mode you need to use but I know the issue starts with that as I know QSPI mode (0000) cannot be used with the BSDL.

    Best Regards,

    Ralph Jacobi

  • 0 in reply to Wilson Lai
    TI__Guru*** 135355 points

    Hi Wilson,

    Sorry for the delay in updates here - I am still waiting on inputs from another team and this issue has been escalated yet again today. Have not forgotten this and am pushing to get a resolution ASAP.

    Best Regards,

    Ralph Jacobi

  • 0 in reply to Ralph Jacobi
    Prodigy 10 points

    Hi Ralph Jacobi, 

    Apologize for the late reply. May you tell me which boot mode is the correct one to set the MCU so that it can clear the instruction register failure and enter the boundary scan mode?

    Appreciate your advice and effort to resolve this issue. If you do have the solutions or some workarounds, please don't hesitate to share with me.

    Thank you.

  • 0 in reply to Wilson Lai
    TI__Guru*** 135355 points

    Hi Wilson,

    That is the detail I am still trying to get. I know 0000 doesn't work but need to confirm which boot mode you need to use that is verified to work with BSDL.

    Best Regards,

    Ralph Jacobi

  • 0 in reply to Wilson Lai
    TI__Guru*** 135355 points

    Hi Wilson,

    Just want to update that this is still being investigated, I have been pushing to get a resolution that I can share with you regarding this. I apologize that it's taking us over a month to provide a fundamental piece of information.

    I sent you a friend request as there is one piece of information I do want to share outside of this public forum post.

    Best Regards,

    Ralph Jacobi