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CDAg's avatar
CDAg
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7 years ago

How to configure\program Stratix IV EP4SGX530KH40I3

I cant establish JTAG communication with this part. nCONFIG always stays low indicating the part never generates\comes out of a Power On Reset which is required for configuration to be possible. Can any let me know what I can try? I have read what I believe are all the applicable ALTERA datasheets, handbooks, and app notes, for which I have my electrical interface implemented accordingly. I have VCC coming up with 50 -100us, and VCCAUX coming up after VCC reaches its final value. I dont know what the heck I may be doing wrong.

3 Replies

  • JohnT_Altera's avatar
    JohnT_Altera
    Icon for Regular Contributor rankRegular Contributor
    7 years ago
    Hi, Could you help to check if there is anything that is driving the nConfig pin? The reason is that this signal is input pin.
  • CDAg's avatar
    CDAg
    Icon for New Contributor rankNew Contributor
    7 years ago

    Hi John, thank you very much for your response. We did already try driving the nCONFIG pin but unfortunately that did not help.

  • JohnT_Altera's avatar
    JohnT_Altera
    Icon for Regular Contributor rankRegular Contributor
    7 years ago
    Hi, Could you help to measure using scope on nConfig and nStatus pin? I would like to understand what is the status of the device.