Both RF transceivers and data converters are controlled through the SPI interface with multiple chip selects (CSA0, CSB0, CSC0, and CSD0) from the SoC. Also, if latency is an issue, the transceivers??? gain control can be done through two separated parallel buses (not shown in the figure) connected to one of the General Purpose Input Output (GPIO) ports of the SoC. While transceiver A can be confi