An apparatus for sharing a serial communication port between a plurality of communication channels is described. The apparatus comprises a transceiver that manages communications over the serial communication port. The apparatus also includes a multiplexer coupled to the transceiver, wherein the multiplexer multiplexes the plurality of communication channels. The apparatus also includes identification information circuitry coupled to the multiplexer, wherein the identification information circuitry adds identification information to data from the plurality of communication channels that enables the plurality of communication channels to share the serial communication port. The serial communications port and the multiplexer permit communication between integrated circuits that meet at least one latency metric for the plurality of communication channels when the plurality of communication channels are active.