Article ID: 000085300 Content Type: Error Messages Last Reviewed: 04/15/2013

Error: SERDES DPA Block node 'lvds_rx:lvds_rx_inst0|altlvds_rx:ALTLVDS_RX_component|lvds_rx_lvds_rx:auto_generated|lvds_rx_dpa3' is not properly connected on the 'RXFCLK' port. It must be connected to one of the valid ports listed below. Info: Can be c

Environment

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

    Due to a problem in the Quartus® II software version 12.1 and later, you may see this error in Arria® V devices when using the ALTLVDS_RX megafunction in external PLL mode.

    Error: SERDES DPA Block node 'lvds_rx:lvds_rx_inst0|altlvds_rx:ALTLVDS_RX_component|lvds_rx_lvds_rx:auto_generated|lvds_rx_dpa3' is not properly connected on the 'RXFCLK' port. It must be connected to one of the valid ports listed below. Info: Can be connected to LVDSCLK port of arriav_pll_lvds_output WYSIWYG Info: Can be connected to OUTCLK port of generic_pll WYSIWYG

    Resolution

    To workaround this problem an LVDS buffer needs to be inserted between the external pll and the ALTLVDS instance on the rx_inclock and the rx_enable ports.

    Refer to the related solution below to learn how you can add an intermediate LVDS buffer between the external PLL and ALTLVDS IP.

    Related Products

    This article applies to 5 products

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

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