According to the task requirements of timing, communication and multi-function control of a certain type of search radar, a multi-function timing control module based on CPCI bus architecture is constructed with FPGA as the main control device. The hardware design includes power module, clock management, FPGA, PCIe control, RS422 serial port and other functional modules. The software uses Verilog language programming to realize the radar timing control, PCIe interface and synchronous serial port data transmission, radar parameter initialization, display and control command distribution, sub-system status reporting, shelter Angle setting, GPS timing calibration and so on Kind of function. The module was tested and verified with the radar prototype in a test site in Yantai, and the function and reliability of the timing control module were fully verified through the integrated adjustment and the whole machine test. The practical engineering application shows that the function and performance of each module of the universal timing interface can meet the design requirements of the system.