基于PCI9054的PCI主模式板卡的设计

PCI 总线广泛应用于现代电子测试测量领域，然而当前基于 PCI 总线的测试设备主要为应用 PCI 从模式的设备，这很大程度限制了测试设备的性能。本文首先介绍了 PCI 总线主模式的工作原理，然后通过 PLX 公司的PCI9054接口芯片与 FPGA 相结合的方式实现了测试设备的 PCI 主模式的功能。该设计可以有效提高测试设备之间数据交互的实时性，并可以应用于测试设备与专用存储设备之间的连接。最后，本文给出了基于 PCI 主模式设计的设备间数据交互实例，充分验证了该设计的可行性。

The design of board worked in Initiator mode of PCI bus based on PCI9054

PCI bus is widely used in modern electronic test and measurement fields.However,current testing facilities based on the PCI bus are mainly Target devices of PCI bus,which greatly limits the performance of testing facilities. This paper,firstly,presents the working principle in Initiator mode of PCI bus and then realizes the function of testing facilities worked in Initiator mode of PCI bus by the combination of PLX PCI9054 chip and FPGA.The design can effectively improve the real-time performance among testing facilities on data interaction,and can be used as connection between testing facilities and dedicated storage device.At last,the paper presents examples between devices which are worked in Initiator mode of PCI bus and fully verify the feasibility of the design.