基于FPGA的PCI从接口设计

介绍一种使用PCIMegaCore在FPGA上实现PCI从接口的方法，该方法可以将PCI接口逻辑和用P逻辑集成在一片FPGA上，实现紧凑的系统设计。重点介绍Altera公司提供的PCI_t32 MegaCore的内部结构和外围信号，分析了PCI总线交易时序，给出使用有限状态机设计本地控制逻辑的方法，并进行了时序仿真，最后使用PCI接口调试软件PCItree对所设计的PCI板卡进行了性能验证。时序仿真和实验的结果表明所设计的PCI从接口符合PCI总线3．0规范。

Design of PCI Target Interface Based on FPGA

A method of implementing PCI target interface using PCI MegaCore on FPGA was presented.The design integrates the PCl interface logic and the user logic on one FPGA chip,improving the system integration degree.A general overview of pci_t32 MegaCore function and the waveforms for PCI target transactions was provided.The method of designing the local controller logic with state machine was proposed.And the timing simulation was implemented.At last,the designed add-in card was tested by the PCI interface debugging software PCItree.The result of timing simulation and experiment showed that the design of PCI tarclet interface complied with PCI Local Bus Specification Revision 3.0.