Article ID: 000079507 Content Type: Troubleshooting Last Reviewed: 08/27/2013

Why does the Quartus II programmer generate JTAG error messages when programming a design security key using Encryption Key Programming (.ekp) into a Cyclone III LS device via a USB-Blaster?

Environment

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

    You may see the following error messages in the Quartus® II software version 9.1, SP1 and SP2 when the START button is pressed for the first time to program the Encryption Key Programming (.ekp) file into a Cyclone III LS device via a USB-Blaster™ download cable.

     

    Error: Can’t access JTAG chain

    Error: Can't configure device. Expected JTAG ID code 0x******** for device 1, but found JTAG ID code 0x00000000.

    Error: Operation Failed

     

    When the START button is pressed for the second time there are no errors and the programming is successful.

     

    This issue does not occur when using the ByteBlaster™ II or EthernetBlaster download cabels.

     

    Resolution

    This is fixed in Quartus II design software version 10.0.

    Related Products

    This article applies to 1 products

    Cyclone® III LS FPGA