Article ID: 000086810 Content Type: Troubleshooting Last Reviewed: 06/15/2017

Why does a new image load immediately when using Real Time ISP with ISP Clamp feature in MAX II or MAX V device?

Environment

  • Intel® Quartus® Prime Pro Edition
  • Jam™ STAPL software
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    Description

    When Real Time ISP is enabled, by default ISP Clamp should be skipped where the new design will take effect after a power cycle. However due to a bug in the MAX® II and MAX® V device JAM/JBC file programming algorithm in Quartus® Prime programmer, when using Real Time ISP with ISP Clamp feature together, the ISP Clamp is performed and the new design starts to function. immediately. 

    Resolution

    You can enable the DO_DISABLE_ISP_CLAMP procedure when executing JAM or JBC file, to bypass the ISP Clamp and perform the Real Time ISP operation.

    If using the quartus_jli executable, the command would be:

    > quartus_jli -aprogram -eDO_DISABLE_ISP_CLAMP -eDO_REAL_TIME_ISP <filename>.jam/.jbc

     

    If using the JAM STAPL player, the command would be:

    > jam -aprogram -dDO_DISABLE_ISP_CLAMP=1 -dDO_REAL_TIME_ISP=1 <filename>.jam

     

    If using the JAM Byte Code player, the command would be:

    > jbi -aprogram -dDO_DISABLE_ISP_CLAMP=1 -dDO_REAL_TIME_ISP=1 <filename>.jbc

     

    This issue is scheduled to be fixed in a future version of the Quartus® Prime software. 

    Related Products

    This article applies to 2 products

    MAX® II CPLDs
    MAX® V CPLDs

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