Unsupported Request to Upstream Traffic - 2.9 English

AXI Memory Mapped to PCI Express (PCIe) Gen2 v2.9 LogiCORE IP Product Guide (PG055)

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2.9 English

To receive upstream traffic from a connected device, the Root Ports PCIe BAR_0 must be configured. If BAR_0 is not configured, the Root Port responds to requests with a Completion returned with Unsupported Request status.