In my research I have found that there is a transmit +, transmit -, receive +, and receive -.
I have read that a -200mV differential results in logic 1 and +200mV differential results in logic 0.
I have read that when line A goes low, B goes high which results in logic 0. When line A goes high and B goes low, results in logic 1.
Are lines “A” and “B” representative of transmit + and - ?
What exactly causes a negative differential and a positive differential?