We designed a circuit with the TLK10031 PHY that will be used for a VPX Ultra-thin Pipe, thus we will use 1G-KX mode only. Can the TLK10031 be configured to operate in 1G-KX mode only, but still support auto negotiation? The idea is that, during auto negotiation, we would report to the mating UTP device that we support 1G mode only.