Article ID: 000075322 Content Type: Troubleshooting Last Reviewed: 11/26/2012

Invalid JTAG configuration

Environment

  • Quartus® II Subscription Edition
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    Due to a problem in the Quartus® II software version 12.0 SP2 and earlier, you may see this error in SignalTap™ II Logic Analyzer when you use a USB-Blaster™ II cable with Arria® V devices.

    Resolution

    To work around this problem, perform the following steps after programming the SRAM Object File (.sof). Note that the jtagconfig executable can be found in <Quartus II software installation directory>/quartus/bin or <Quartus II software installation directory>/quartus/linux.

    1. Open a Command prompt
    2. Type the following command
      jtagconfig
    3. Verify which cable number you are using
    4. Type the following command:
      jtagconfig --setparam <cable number> JtagClock 16M
    5. Verify the change by typing the following command:
      jtagconfig - -getparam <cable number> JtagClock

    This issue has been fixed beginning with the Quartus II software version 12.1.

    Related Products

    This article applies to 5 products

    Arria® V GT FPGA
    Arria® V ST SoC FPGA
    Arria® V SX SoC FPGA
    Arria® V GX FPGA
    Arria® V GZ FPGA