Cyclone IV GX EP4CGX22 LVDS pins

Hello,

The highlighted information from your screenshot is receive/transmit.

You can find more information about High Speed Differential Interfaces and LVDS from page 22 of this link: https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-iv/cyiv-51006.pdf

That is the document you need to refer to to know the General Pin Input/Output (GPIO) of Cyclone IV devices. Another document you can refer to for your design is Pin-Out Files: https://www.intel.com/content/www/us/en/programmable/support/literature/lit-dp.html?1

For your question, Cyclone IV devices support up to to 840 Mbps transmitter (Tx), 875 Mbps Rx in LVDS interfaces from page 17 of Cyclone IV User Manual from this link: https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-iv/cyclone4-handbook.pdf

The way for you to know which Pin Number is from this document https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/manual/rm_civgx_fpga_dev_board.pdf

I would advise you to check on Pin Assignment tutorial videos over Youtube to learn how to use Quartus. Intel also has it's own Youtube channel that post tutorial videos on FPGAs. This is one of them: : https://www.youtube.com/watch?v=Jn5keRQAuyw

I hope this helps.