System and method of configuring an external radar device through high speed reverse data transmission. In one embodiment, the system includes a radar data processing module for processing radar data received from the external radar device, and a radar configuration management module for generating control data for controlling the external radar device. The system further includes a configurable half-duplex interface, wherein the configurable half-duplex interface, in response to receiving a turnaround command, switches between (1) a configuration for transmitting control data packets to the external radar device via a communication link, and (2) a configuration for receiving radar data packets from the external radar device via the communication link. A receive controller is provided and is configured to receive radar data packets from the external radar device via the communication link and the configurable half-duplex interface, wherein the receive controller is configured to extract radar data from the radar packets for subsequent processing by the radar data processing module. A transmit controller is provided and configured to receive control data from the radar configuration management module, wherein the transmit controller is configured to generate radar control packets comprising the radar control data, and wherein the transmit controller is configured to transmit the radar control packets to the external radar device via the communication link and the configurable half-duplex interface when configured for transmitting data.