Serial communication apparatus for unidirectional communication between chips of radio frequency front-end module and inside the chips

A serial communication apparatus, comprising a radio frequency front-end module and radio frequency devices, wherein a first input interface and a second input interface of the radio frequency front-end module are respectively connected to output interfaces of a main control module, a first output interface of the radio frequency front-end module is connected to a first input interface of a first one of the radio frequency devices via a first signal bus, a second output interface of the radio frequency front-end module is connected to a second input interface of the first one of the radio frequency devices via a second signal bus, and starting from the first one of the radio frequency devices, the radio frequency devices are successively connected via the first signal bus and the second signal bus respectively;

• when valid SIPI data received by each of the radio frequency devices contains a clock signal, the radio frequency device comprises a second power-on reset circuit and a receiving circuit, wherein the second power-on reset circuit is connected to the receiving circuit, a first input interface of the receiving circuit of the first one of the radio frequency devices is connected to a first output interface of a transmission circuit via the first signal bus, a second input interface of the receiving circuit of the first one of the radio frequency devices is connected to a second output interface of the transmission circuit via the second signal bus, and starting from the first one of the radio frequency devices, the receiving circuits of the radio frequency devices are successively connected via the first signal bus and the second signal bus respectively.