嵌入式PCI总线主模式应用中时序转换模块设计

Design of Timing Conversion Module in Initiator Mode Application Based on Embedded PCI Bus

针对板卡测试环境中使用PC104系列计算机模块的局限性,以嵌入式处理器为核心开发主控模块,以替代原有的计算机模块,实现板卡测试。主控模块的设计中,嵌入式处理器与PCI接口芯片之间的总线时序转换是关键。本文在分析嵌入式处理器与PCI接口芯片时序的基础上,详细介绍了时序转换模块的可编程逻辑设计。最后,通过仿真验证了转换模块内部逻辑设计的正确性。

Aiming at the limitation of PC104 series computer module used in circuit board testing,the paper developes control module based on embedded processor to replace previous computer module and completes board testing.Timing conversion of bus between em-bedded processor and PCI interface chip is the key in control module design.The paper introduces programmable logic design of the tim-ing conversion module in detail on the basis of timing analysis of embedded processor and PCI interface chip.Finally,the design verifies the correct ness of the logic design through simulation.