Abstract: The CPCI bus is a highly compatible and comprehensive computer bus. This article discusses the hardware implementation of a servo control card based on the CPCI bus through an in-depth analysis of the functions and characteristics of DSP chips (TMS320F2812), FPGA chips (EPF10K30A), and CPCI interface chips (PCI9054) launched by TI. By fully considering and integrating the resources and characteristics of the above chips, it can better meet the stringent requirements of the system for the real-time performance and control accuracy of motion control components. Keywords: CPCI; FPGA; DSP; Servo control card Introduction: Compact PCI, abbreviated as CPCI, is a modified version of PCI technology. It continues to use PCI local bus technology, abandons the traditional mechanical structure of IPC, and adopts a high-reliability European card structure with 2mm density pin connectors, further improving reliability. The most popular system design is to connect an industrial computer to a dedicated servo control card via the CPCI bus. The industrial computer issues control commands, and the servo control card completes specific functions according to the received commands. Servo control cards control the position, speed, and acceleration of motors in real time within industrial computer-based systems, thereby reducing a significant amount of work in the host computer's motion control. Furthermore, the servo control card communicates with the PC via the CPCI local bus, achieving a high data transmission rate and ensuring the real-time performance of the CNC system. For details, please click: Design and Implementation of a Servo Control Card Based on CPCI Bus