3.2.6 Polarity Invert

(Ask a Question)

Polarity invert is used to swap the P and N receiver pins, which provide flexible PCB routing by interchanging the devices physical pin to the logical signal. If the polarity of differential traces is swapped on the PCB, the differential data can be swapped to correct it. In PIPE mode, there is an input port for rxpolarity inversion, but that is not the case for the other modes. Polarity inversion is controlled by a system register (INV_RX_POLARITY_LN#), not an input port for PMA/8b10b/64b6xb modes.