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anrfpga's avatar
anrfpga
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4 years ago
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Understanding SW3 settings in Agilex Devkit

Hi All, I am trying to understand the JTAG chain settings of the Agilex Devkit I have. The SW3 settings in Table 9 of its user guide is a little confusing to understand. The default setting (Mode ...
  • tehjingy_Altera's avatar
    tehjingy_Altera
    4 years ago

    Hi anrfpga


    Sorry for the multiple confusion through the thread.


    "Chained HPS with SDM nodes internally" refers to the HPS is chained to the SDM through the FPGA silicone and the HPS is connected to the JTAG chain through the SDM Jtag Pins.


    "Chained HPS with SDM nodes externally" refers to the HPS not connected to the SDM. The HPS will be connected externally through the OOBE daughter card through its own dedicated JTAG pins.


    For mode 001 to enable the HPS on the Jtag chain, it requires an additional OOBE daugther card for the HPS to be able to appear on the JTAG chain.


    Regards

    Jingyang, Teh


anrfpga's avatar
anrfpga
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4 years ago

Hi Jingyang,

No, clicking Auto Detect is throwing the error that I mentioned. However, disabling the HPS (setting SW3.1 to ON) from the JTAG chain is resolving the broken chain issue but that defeats the purpose of having HPS external to the SDM.

Rest of the modes are all working fine and I am able to program the FPGA.

Thanks

Nikhil