Intel: Use Cyclone® V GX's PCI-Express® (PCIe) Hard IP. Can the transceiver REFCLK I/O standard use LVDS (AC coupling) or CML (AC coupling)?
PCI Express
board
Category: PCI-Express®
Tools: Quartus® Prime
device:-
You can select the I/O Standard described in the document, so you can select LVDS/CML even when using PCIe Hard IP.
(reference)
Cyclone V Device Datasheet
https://www.altera.com/en_US/pdfs/literature/hb/cyclone-v/cv_51002.pdf
(Search for Reference Clock Specifications.)
When using it, be sure to confirm that it can be set and compiled in Quartus® Prime.
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