Digital synchronization system adopting digital synchronization interface, data transmission method and medium

The invention provides a digital synchronization system adopting a digital synchronization interface, a data transmission method and a medium. The digital synchronization system comprises a sending end and a receiving end, the transmitting end and the receiving end are connected through a plurality of digital synchronous interfaces; wherein each digital synchronization interface is used for synchronizing the data of the sending end based on a preset synchronization indication signal, and sending the data synchronized with the other digital synchronization interfaces to the receiving end. According to the invention, the frame header indication signal and the clock synchronization reference signal in the input signal are combined into a new preset synchronization indication signal, only one pin is needed, pins in data transmission are reduced, and hardware resources can be saved; according to the invention, the read-write pointer in the data buffer can be dynamically synchronized based on the preset synchroniza