TUSB501 is a USB 3.0 channel redriver with equalization. Pin 2 and 3 are denoted as RXP and RXN, which take the USB 3.0 input signals. The corresponding output pins are pin 7 and 6 (TXP and TXN), respectively.
My question is about the polarity (P and N in the pin pin names): Does the polarity make sense only for this driver or it is tied to the USB 3.0 signal polarity.
More clearly, suppose I want to use this redriver to drive the the differential signal SSTX+ and SSTX-. Do I have to connect SSTX+ to the RXP, and SSTX- to RXN? Can I reverse the polarity by connecting SSTX+ to the RXN, and SSTX- to RXP?
I think, from a functional viewpoint, this redriver is transparent to the differential signal, it should not care the input signal polarity. I need someone to confirm this is correct.
This question came up when I tried to route the signals on PCB. Without changing the connection, the signals would cross each other. Thanks.
