Design of 1553B avionics bus interface chip based on FPGA

MIL-STD-1553B is an avionics bus which is adopted widely, but the 1553B ASIC is difficult to be reprogrammed and modified. This paper proposes using the portability, highly integration and in-system programmable (ISP) performance characteristics of FPGA, and designing 1553B bus interface chip based on FPGA. The following designs of 1553B bus interface chip were completed in VHDL language on QuartusII, including Manchester encoder, Manchester decoder, Manchester coding controller and monitor (MCCM) and Manchester decoding controller and monitor (MDCM). MCCM analyzes, controls and monitors the command of data, in order to improve the controllability. MDCM analyzes the working function of data, and realizes the controlling and monitoring, in order to improve the reliability. The experimental results show that, 1553B bus interface chip based on FPGA can meet the requirements of Manchester encoding, Manchester decoding and command analysis and process correctly. Design of FPGA-based can obtain independent intellectual property rights and reliable avionics bus interface chip, and has ISP advantage.