LVDS and emulated LVDS outputs

[AGofs]

Hi everyone,

I'm sending out from FPGA a lot of signals at LVDS with low data rate.

Is it possible to use both true LVDS transmitter channels and emulated LVDS output channels together as an output LVDS channels?

[AGofs]

Hi everyone,

Do you have something new about this issue?

[JonWay_C_Intel]

Hi @AGofs​ Theoretically possible depending on how low is your datarate. However, for the LVDS IP Core, you can give a quick try to assign part of the channels as True and the others as Emulated, and see if the fitter allows it.

[AGofs]

Hi JwChin,

Thank you for your answer!

I'll try to use LVDS_TX IP core to check if it is possible.

But what will happen if resistor terminations (for LVDS emulated channels) will be removed?

[JonWay_C_Intel]

Let me put this answer in the right place: The RS and RP external resistors is to give an effective 100 ohm differential output impedance