Assistance Required: Persistent Oscillation Issues on MAX10 LVDS Receiver Inputs

Hi,
I believe the answer is implementation dependent. Adding a DC bias to enforce a 0 or 1 level for floating LVDS inputs would reduce performance, e.g. increase minimal signal level and add an asymmetrical time shift of input signal, reducing effective skew margin. Both effects reduce maximal cable length. Common mode bias is required in AC coupled input circuit, but differential bias is rarely applicable for high speed differential signaling.

When receiving an open LVDS input signal with 10b8b decoder, we still get a certain rate of false correct frames. An additional time filter detects stable input signal.