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Dan_Suciu's avatar
Dan_Suciu
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1 year ago

MAX 10 JTAG programming

Hello, I am trying to implement a uC based JTAG re-programming of a MAX10 10M16SAE144 chip by using a .svf file (when no physical access to the JTAG connector is available in the field). I generat...
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Mikexx's avatar
Mikexx
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1 year ago

I know I am not directly answering your question, but ..........

I was wondering if you were reliant on the JTAG pullups for a logic high, or if you're using push-pull MCU outputs. I would strongly recommend using push-pull for the clock if nothing else.

If you're already doing this then I can't explain the issues you're seeing.

  • Dan_Suciu's avatar
    Dan_Suciu
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    1 year ago

    Hello Mike,

    Thank you for your reply. Definitely the signals rise/fall time and levels are very important.

    I have the micro-controller with pins outputs push/pull mode and the signals are shorter rise/fall time (approx. 10ns 10% to 90%), compared with USB Blaster used to program .pof file over the same JTAG interface.

    The clock frequency I use is lower than used in Blaster, and the calculated delays when generating .svf file, should be longer than required.

    I was able to generate a version of the .svf file doing only erase and verify the blank memory using the Blaster.

    Thank you anyway,

    Dan