The design of local bus interface unit based on PCI9054

PCI9054 is a general interface chip made by the PLX Company of USA, ARINC659 Bus Control Chip needs to communicate with processor through PCI9054 chip. The paper has introduced a general design method of PCI bus interface, has described the mechanism of the metastability and given conditions for reducing metastable produce, confirmed the design plan of local bus interface unit and programmed the design on FPGA using Verilog HDL language. This programme works stability, the transmission of data is accurately, has achieved high-speed communications with the PCI bus. Currently, the design of local bus interface unit has finished the verification of function and timing simulation, is able to support PCI9054 to access internal memory and registers of ARINC659 Bus Control Chip in the combined method of single-cycle and burst, and has passed verifying test in FPGA prototype system based on Xilinx.