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anrfpga's avatar
anrfpga
Icon for New Contributor rankNew Contributor
4 years ago
Solved

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


tehjingy_Altera's avatar
tehjingy_Altera
Icon for Regular Contributor rankRegular Contributor
4 years ago

Hi anrfpga


Sorry that I pointed you to the wrong section.

There is a statement in the document that you are viewing just before Table 9 .

"Intel® Agilex™ HPS JTAG slave can be accessed from either SDM dedicated JTAG pins or HPS dedicated I/Os."


With the current switch settings, are you able to detect any device on the chain with the "AutoDetect" button?

Do you encounter any JTag error if you follow the default settings?


Regards

Jingyang, Teh