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Altera_Forum's avatar
Altera_Forum
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15 years ago

Error when using x1 PCIe in SOPC

Hi,

I instantiate PCIe core in SOPC following AN532 http://www.altera.com/literature/an/an532.pdf which is using x4 PCIe.

But I configure for my CycloneIV board which has only 1 lane.

I have lots of compilation errors due to some ports are not connected properly. The errors point to SERDES module.

I checked and found that Although the PCIe wizard configures x1 PCIe; but the Transceiver wizard shows that it is configured for x4 PCIe

Any one has similar problem? Thanks

Jeff

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    --- Quote Start ---

    Hi,

    I instantiate PCIe core in SOPC following AN532 http://www.altera.com/literature/an/an532.pdf which is using x4 PCIe.

    But I configure for my CycloneIV board which has only 1 lane.

    I have lots of compilation errors due to some ports are not connected properly. The errors point to SERDES module.

    I checked and found that Although the PCIe wizard configures x1 PCIe; but the Transceiver wizard shows that it is configured for x4 PCIe

    Any one has similar problem? Thanks

    Jeff

    --- Quote End ---

    I think there's a bug with SOPC, it can't propagate the setting properly. I might have configured it wrong before.

    I deleted the module, start again, it's ok now.