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Question about C6678EVM PCIe

g.f.
Guru 15520 points

Hi,

I have a question about C6678 PCIe.

On C6678EVM, it seems that there are no PRSNT and PERST signal of PCIe.
I thought these signal must be connected.
If I want to connect C6678 and FPGA via PCIe, do I need to connect PRSNT and PERST?
Or do I need to connect only Tx/Rx/REF_CLK ?

best regards,
g.f.

  • 0
    TI__Genius 12065 points

    PCIe in C66x device does not support hot plug feature. So the card presence detect pin "PRSNT" is not supported.

    And "PERST" as a side-band reset signal is also optional in PCIe spec and is not supported in C66x PCIe.

    So basically you just need to connect the signals described in section 2.5 "Signal Descriptions" in PCIe user guide which includes the TX/RX/CLK pins.

  • 0 in reply to Steven Ji
    Guru 15520 points

    Hi Steven,

    Thank you so much for the reply.

    I understood.

    best regards,
    g.f.