This paper introduces the principle, structure and the timing of the target PCI core of the XILINX Inc. Also introduces the flow of FPGA design and some key points which must be paid attention to in the design. 针对Xilinx公司的32位TargetPCI核,介绍了接口内核的原理和结构,分析了时序设计要点。指明了在FPGA设计的流程和设计中的一些要点。