I'm considering using an instance with PCI Express* (PCIe*) Gen2 x4 and linking down to x2. At that time, there is no connection destination for 2 TX and 2 RX transceivers. How should I handle this pin?

PCI Express

Category: PCIe*
tool:-
Device: Arria® V


It is recommended to connect unused transceiver receiver pins (GXB_Rx) to GND, but this is not specified in the standard.
However, for applications where unused pins are connected to connectors, it can be left untreated.

Reference information
https://www.altera.com/support/support-resources/knowledge-base/solutions/rd03282012_985.html


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