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Altera_Forum's avatar
Altera_Forum
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15 years ago

Unable to scan device chain?

I am working in Windows XP, 32 bit. I am trying to use the Arria II GX. I am running Quartus II version 10.1.

When I first hooked everything up, it worked great. Now, when I run the auto-detect it tells me "Unable to scan device chain. Can't scan JTAG chain." When I try to run the JTAG chain debugging I get "Error: Incorrect clock value."

I have seen some other posts similar to this problem where they switched out the USB Blaster. I have tried different cables and have had no success.

Can anyone help with this?

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    --- Quote Start ---

    I am working in Windows XP, 32 bit. I am trying to use the Arria II GX. I am running Quartus II version 10.1.

    When I first hooked everything up, it worked great. Now, when I run the auto-detect it tells me "Unable to scan device chain. Can't scan JTAG chain." When I try to run the JTAG chain debugging I get "Error: Incorrect clock value."

    I have seen some other posts similar to this problem where they switched out the USB Blaster. I have tried different cables and have had no success.

    Can anyone help with this?

    --- Quote End ---

    If you turn on your Arria board, does it load a default configuration and run? If it does not run, have you probed power supplies to check they are all correct?

    Do you have another board that you can test your USB-Blaster with?

    Do you have a digital I/O board that has four bits? You could configure this as a JTAG tester; you need TCK. TMS, TDI outputs, and TDO input.

    Cheers,

    Dave