If the TXP and TXN differential traces are accidentally swapped on the PCB, the differential data transmitted by the transceiver TX is reversed. One solution is to invert the parallel data before serialization and transmission to offset the reversed polarity on the differential pair. The TX polarity control can be accessed through the CH*_TXPOLARITY input from the interconnect logic interface. It is driven High to invert the polarity of the outgoing data.