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Differential pair pins can be also used as two single ended I/O. You can see this from the device pinout tables. You have to keep distance rules between single ended and differential pins, they are checked by the Quartus fitter. You'll most likely have a somewhat increased crosstalk between p and n pins of a differential pair, depending on the board layout. If you are using the breakout board to connect the HSMC interface, you'll miss sufficient ground pins for single ended I/O.
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I dont understand what is the distance rule. and how to see that whether the gound pins are sufficient or not for single ended IO?
As far as I know, I thought to use single ended IO, I just need to reconfigure it at pin planner so that it has IO standard 2.5V instead of LVDS isnt it? Please correct me if I am wrong because I am currently configuring the HSMC pins.
thank you.
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