基于PCI-e和PCI-x总线的XMC/PMC载板设计

摘要

为了灵活地实现VPX系统中功能的扩展,设计了一种采用PCI-e总线和PCI-x总线的XMC/PMC功能载板.该载板通过P1-P6连接器与不同功能板卡连接,由HD68接口实现外界与载板之间数据通信,并介绍了以PCI-e开关模块和PCI-e转PCI-x模块为主的系统方案.对其中的转换模块、开关模块、存储模块、电源模块和时钟模块进行了详细介绍.在电路设计过程中,通过仿真保证高速电路的信号完整性.最后通过与AD板卡进行调试,验证了XMC/PMC设计可行性.%In order to flexibly realize the function expansion in VPX system,the design uses PCI-e bus and PCI-x bus to complete the function of XMC/PMC carrier board. The carrier board is connected with different function boards through the P1-P6 connector,the data communication between the outside and the carrier board is realized by the HD68 interface,and the PCI-e switch module and the PCI-e switch PCI-x module are mainly introduced system solutions. The converting module,the switch module,the power module and the clock module are introduced in detail. In the circuit design process, the simulation is to ensure high-speed circuit signal integrity. Finally, by debugging with the AD board the XMC/PMC design is verified feasibility.