High speed, high reliability and low latency make FC protocol the first choice for the next generation of the avionics network. But the event-triggered message transmission form makes the network lack time certainty. To improve the certainty of message transmission, we designed a time-triggered FC terminal interface. At the same time, the key modules of FC IP core, PCIE interface, the memory chip controller and the management module of send buffer were also designed. Finally, by use of the development tool ISE and Modelsim, we tested the interface by applying incentives. The result shows that BER of the interface is less than 10-12, and the eye jitter is controlled at 87. 5 ps, which meet the requirements of design.