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  1. I am trying to receive 4 and drive 4 differential (rs-422) signals with an Arty board at a rate of 8 Mbit/s. These signals are going to be used in a noisy environment (which is why they are differential). I noticed that the Arty board's high speed i/o pins (PMOD JB and JC) "have their data signals routed as impedance matched differential pairs" according to the reference manual. Does this mean I would be able to use them as such with no further hardware required? What sort of precautions would I need to take to ensure that I do not damage any hardware and is there example code somewere, p