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Petkov_Alex's avatar
Petkov_Alex
Icon for Occasional Contributor rankOccasional Contributor
3 years ago
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S10 Native Phy SR or LR link type

Hello. I am interested in setting via Platform Designer in S10 Transceiver Native Phy, what difference between Transceiver link type SR or LR, what settings in background it does before and after comp...
  • Kshitij_Intel's avatar
    Kshitij_Intel
    3 years ago

    Hi,


    Nothing changes in Assignment editor.

    In Stratix 10 L/H-Tile speak, SR (Short Reach) is chip-to-chip (low loss) , and LR (Long Reach) is backplane (high loss). So the changes will be in the PMA and its ability to TX & RX over different loss profiles. If you are transmitting over a backplane, or to another board, or lossy medium, use LR. If you are transmitting to the same chip (including optical module) use SR.


    Thank you

    Kshitij Goel


Kshitij_Intel's avatar
Kshitij_Intel
Icon for Frequent Contributor rankFrequent Contributor
3 years ago

Hi Alex,


For clarification related to SR and LR means sharing the AN835 related to PAM4 signaling fundamentals. Please refer to the link below.


https://www.intel.com/content/www/us/en/docs/programmable/683852/current/cei-56g-interconnect-reaches-and-application.html


Also, we follow the Optical Internetworking Forum(OIF) clauses for the specifications of SR and LR. Please refer the link below.


https://www.intel.com/content/www/us/en/docs/programmable/683723/current/data-pattern-generation.html


Hope this will help you, please let me know if you are looking for something else.


Thank you

Kshitij Goel