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dncmrc1's avatar
dncmrc1
Icon for New Contributor rankNew Contributor
23 days ago
Solved

Stratix 10 Transceiver PHY bonding and multiple TX PLL clock inputs (for DisplayPort TX)

We are using a Stratix 10 L-Tile/H-Tile Transceiver Native PHY to implement a DisplayPort TX and RX. The transceiver is set as Basic (Enhanced PCS), TX/RX Duplex. The TX PMA is set as Non bonded, wi...
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  • CheepinC_altera's avatar
    CheepinC_altera
    1 day ago

    Hi,

     

    After consulting with our DisplayPort (DP) IP experts, it appears that our DP is currently not operating in bonded mode for multi‑lane support. You may want to explore our DP IP.

     

    Please let me know if you have any questions or concerns. Thank you.

Ash_R_Intel's avatar
Ash_R_Intel
Icon for Regular Contributor rankRegular Contributor
21 days ago

Hi,

Please follow the guideline in the L- and H-Tile Transceiver PHY User Guide: https://docs.altera.com/r/docs/683621/current/l-and-h-tile-transceiver-phy-user-guide/pma-bonding

As I understand you need PMA only bonding of the channels. For this, you will need only one ATX pll clock to be driving all the channels.  

Another important consideration you have to make, is the channel placements. As you need max 20G, you will need to use the GXT channels. 

Hope this helps.

 

Regards

  • Ash_R_Intel's avatar
    Ash_R_Intel
    Icon for Regular Contributor rankRegular Contributor
    20 days ago

    Yes, you understood it right.

    As 20G can be achieved only by GXT channels and for the clocking at that speed ATX pll is the preferred choice. Refer section 3.1 PLLs of the same document.

     

    Regards

    • dncmrc1's avatar
      dncmrc1
      Icon for New Contributor rankNew Contributor
      14 days ago

      Hi,

      It looks like bonding is not supported at rates > 17.4G:

      Also the ATX PLL refuses to configure for 20G with bonding:

      Can you please help?

      Regards

      • CheepinC_altera's avatar
        CheepinC_altera
        Icon for Regular Contributor rankRegular Contributor
        6 days ago

        Hi,

         

        Thank you for filing this case and sharing the details. I appreciate your patience. Please allow me some time to review the information, and I’ll get back to you as soon as possible.