The present disclosure discloses a system architecture and method for reducing pin count on a backplane connecting plurality of devices. In an embodiment, the signals from the plurality of devices are multiplexed or mapped into time slots using a MapMux device. The MapMux device then sends the multiplexed or mapped signals over backplane on TDM bus. The MapMux device at the receiving end de-multiplexes or de-maps and sends the received signals to plurality of devices for further processing. The present disclosure allows a large number of signals to be passed between the devices through a single stream.