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MCipr5's avatar
MCipr5
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3 years ago

Active serial configuration

Hi everyone, I'm trying to repair a board because can't load the configuration from external device, details below... For my design I'm using 5SGXMA3E2H29I2L and EPCQ256SI16N. I checked eve...
lixy's avatar
lixy
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3 years ago

Hi,

​

1-- Can you also test the voltage of nCSO with blank FLASH?

2-- Please check if the nSTATUS pin of good and faulty board has same connection/settings.

It seems that the nSTATUS signal of "Good" and "Faulty" Boards starts with different voltage level. As you know, the nSTATUS and nCONFIG need be connected to pull-up resisteor, which means they should start with High.

3-- Are all boards successfully configured with SOF through JTAG?

As for your question about nSTATUS, only CONFIGE_DONE signal reflects the success of JTAG configuration. Therefore, you do not need to test nSTATUS and nCONFIG signals during the JTAG config, and the trigger signal for oscilloscope should be CONF_DONE.

4-- If the faulty board is successful in JTAG Config, and the board connection/software settings are the same as the good ones, we may suspect the nCSO pin defect.


Regards,

Xiaoyan

​


  • MCipr5's avatar
    MCipr5
    Icon for New Contributor rankNew Contributor
    3 years ago

    Hi,

    here it is the nCSO pin:

    I confirm that good and faulty board has same connection/settings.

    It seems like the boards succesfully get the configuration with .sof, the only difference in the faulty one, as you can see between "Good board after configuration with sof" and "Faulty board after configuration with sof", is that nSTATUS pin remains low even if I can clearly see my design running (the FPGA correctly manage two SDI video stream and multiple other signals).

    Even quartus says "Succesfully ended operations"

    Thanks