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Altera_Forum's avatar
Altera_Forum
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16 years ago

CX4-to-HSMC Adapter on Arria-II GX

Hello,

I am trying to connect a CX-4 cable with the Arria-II GX FPGA Development Kit. The description for the CX4-to-HSMC Adapter (http://www.altera.com/products/ip/ampp/morethanip/morethanip.html?gsa_pos=2&wt.oss_r=1&wt.oss=cx4-to-hsmc%20adapter) indicated that it is compatible with Altera Stratix-II GX development mainboards.

I am wondering is the same adapter card compatible with the Arria-II GX FPGA board as well?

Thank you

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    I have ordered a couple of these adapters to be used with the Arria II GX kit as well. I shall find out soon... but I am wondering what you may be suspecting in terms of compatibility. Because, both the sides of the adapter are standard. i.e. hsmc and cx4. Are you thinking that the cx-4 pins may not be connected to the correct transceivers on the a2gx board?

    -sanjay
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    --- Quote Start ---

    I have ordered a couple of these adapters to be used with the Arria II GX kit as well. I shall find out soon... but I am wondering what you may be suspecting in terms of compatibility. Because, both the sides of the adapter are standard. i.e. hsmc and cx4. Are you thinking that the cx-4 pins may not be connected to the correct transceivers on the a2gx board?

    -sanjay

    --- Quote End ---

    I'm curious about how it works for you, too. I have a few of the adapters that I may want to use with new dev kit.

    One quirk with the adapter was that the tx polarity was flipped so I had to force tx_invpolarity in FPGA design. Wondering if that's still the case with the adapter you got.

    Thanks!
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Got them and tried them on the Arria II GX. They work. Looks like they fixed the tx polarity.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    --- Quote Start ---

    Got them and tried them on the Arria II GX. They work. Looks like they fixed the tx polarity.

    --- Quote End ---

    That's good to know. Thanks!