An interface circuit that facilitates communicating information between a first system and a second system comprises a first group of ports, a second group of ports, and routing circuitry. The first group of ports is configured to be electrically coupled to the first system. The second group of ports is configured to be electrically coupled to the second system. The routing circuitry is electrically coupled to the first group of ports and the second group of ports. The routing circuitry is configured to facilitate communicating first information applied to a first port of the first group of ports to a pair of ports of the second group of ports. The routing circuitry is further configured to facilitate communicating second information between the pair of ports of the second group of ports and a pair of ports of the first group of ports when a particular signal is applied to a particular port of the second group of ports.