本文针对数控系统的工作特点和要求,通过对TI公司DSP芯片TMS320LF2407A和Cypress公司PCI接口芯片CY7C09449PV-AC的功能和特点进行深入分析,设计了一种基于PCI局部总线的步进电机运动控制卡-In this paper, numerical control system characteristics and requirements, through the DSP of TI company TMS320LF2407A and Cypress chip PCI interface chip companies CY7C09449PV-AC' s functions and features in-depth analysis, design of a PCI local bus based on the stepper motor motion control card