Vivado version & PCIe XDMA reference

rogroote 5 days ago

Hi all,

I am looking for a reference PCIe XDMA design (Vivado project + host driver).
Does anyone have a link to a solid / proven PCIe project targeting the AUBoard 15P?
In addition:

Which Vivado version(s) would you recommend for this board and XDMA?
Any known pitfalls or good practices for this specific platform are also welcome.

Thanks in advance.
Kind regards

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0 iksevas 5 days ago

I think you can retarget the XDMA reference design to any of the tools for the most part.

two gotchas:

1) generating the PCIe IP requires you to generate GT lanes to target the AUBoard. This differs from the default settings which more than likely were set to a different board. There is a check box on the last page of the IP settings which allows you to override the default so your XDC will actually take effect.

2) Rev 1 of the AUBoard has wrong capacitance value on the PCIe interface to support Gen 4 properly. This is elder to be resolved with a Rev 2 boards available next month.
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0 rogroote 4 days ago in reply to iksevas

Thanks. Our application requires PCIe Gen4 x4 and DDR4 at maximum speed, so upgrading to revision 2 of the board is necessary.
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0 iksevas 4 days ago in reply to rogroote

There 8 are capacitors on the board that are changing values to support Gen 4.
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0 iksevas 4 days ago in reply to rogroote

There 8 are capacitors on the board that are changing values to support Gen 4.
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