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Altera_Forum's avatar
Altera_Forum
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14 years ago

pci express in Cyclone IV GX EP4CGX150BF14 FPGA

i have cyclone IV GX EPCGX150f14 FPGA and i want to test the pci express with a loopback .

Thanks for any help you could offer.

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    It's great that You want to do that. But where is the problem? I see no questions, so there are no problems?

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    I am a beginner in the PCI Express communication protocol.

    First there are two IP configuration mode , root port and endpoint, I don't understand the difference between the two modes.

    also I want to know the steps for configuring the IP and how the interface between IP and my application to be able to make transactions.
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Well the words "root port" and "endpoint" talks for themselves, however You can easily find the answer in Wikipedia. For test purposes, try the factory examples from Altera.

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    IIRC the Altera PCI Express IP doesn't support very well the rootpoint functionality. Last time I checked it supported only at a very low level and you had to do a lot by hand.