LVDS Serdes

Hi,

Are you using Dev kit or own hardware ?

I am asking cause it looks like cold junction between chip and PCB.

So called head-on-the-pillow issue.

In other words , there is no connection between fpga and pcb.

There is samall capacitance between fpga ball and pcb - few pF.

That's why you can see spikes instead of square wave.

Try with other pin on the same chip or another unit.

Best regards

Adam Górski