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PShetty's avatar
PShetty
Icon for New Contributor rankNew Contributor
7 years ago

Clock sharing between the Arria 10 Transceiver Banks

Hi,

We have Arria 10 SoC design,where we are using 4 high speed transceiver channels from each bank(1E,1F,1C,1D) . 4 Transceiver PHY IPs are used to configure the 4 channels from each banks. My question is can I use single ref clock for all these 16 channels, if so what are the rules and procedure to follow?

Thank you.

4 Replies

  • CheepinC_altera's avatar
    CheepinC_altera
    Icon for Regular Contributor rankRegular Contributor
    7 years ago

    Hi,

    Sorry for the delay. ​If I understand it correctly, the 4 XCVR banks that you are referring to are on the same side of the device. For your information, you can use one refclk to drive all the XCVR channels on the same side of device. You may try to create a simple test design and run through Fitter to further verify.

    Thank you.

  • CheepinC_altera's avatar
    CheepinC_altera
    Icon for Regular Contributor rankRegular Contributor
    7 years ago
    Hi, I am not aware of any specific restriction on this. However, it is recommended for you to run through Fitter compilation, and then check if there is any warning related to the refclk placement or driving distance. Thank you. Best regards, Chee Pin
  • PShetty's avatar
    PShetty
    Icon for New Contributor rankNew Contributor
    7 years ago

    Hi cpchan,

    Thanks for the reply. Yes, 4 XCVR banks are on the same side of the device. I do have 4 different Qsys design for 4 xcvr operation. currently I am providing reference clock for each from its respective bank. Is there any rules i have to follow to use single REF clock to drive all 16 channels?

    Thank you.

  • PShetty's avatar
    PShetty
    Icon for New Contributor rankNew Contributor
    7 years ago

    Hi,

    Thank you so mcuh. I will create a test design and verify.