Article ID: 000073789 Content Type: Troubleshooting Last Reviewed: 02/20/2017

Certain DisplayPort TX Designs May Not Produce Image When Operation in MST Mode

Environment

  • Intel® Quartus® Prime Pro Edition
    • BUILT IN - ARTICLE INTRO SECOND COMPONENT

    Critical Issue

    Description

    When the DisplayPort TX core operates in Multi-Stream Transport (MST) mode and you program the TAVG_TSx bit at address 0x00aa to 0 (if the fraction of TARGET_Average_StreamSymbolPerMTP is 0), you may not see any image output.

    This issue is caused by the DisplayPort IP core that erroneously inserts the Virtual Channel Payload Fill (VCPF) at every Multi-Stream Transport Packet (MTP). When the fraction of TARGET_Average_StreamSymbolPerMTP is 0, the VCPF should not be seen at any MTP.

    This error causes the stream bandwidth to eventually exceed the link bandwidth.

    Resolution

    There is no workaround for this issue.

    This issue is fixed in version 16.1 of DisplayPort IP core.

    Related Products

    This article applies to 1 products

    Intel® Programmable Devices

    Need more help?

    Contact support

    Disclaimer

    1

    All postings and use of the content on this site are subject to Intel.com Terms of Use.