Article ID: 000082423 Content Type: Troubleshooting Last Reviewed: 09/11/2012

Why does the PCIe core send Unsupported Request completion message to my first good MRD request?

Environment

BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description

If bit 1 of the PCI® Command Register (Memory Space Access Enable) in the Configuration Space is not set,
the PCIe core responds to the first good MRd request with a Completion with Unsupported Request status.

To fix this issue, please set Memory Space Access Enable bit of the PCIe Command Register to one.

Related Products

This article applies to 3 products

Stratix® IV GX FPGA
Arria® II GX FPGA
Stratix® IV GT FPGA

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