介绍了用CPLD辅助设计在嵌入系统中进行曲MPU复杂逻辑功能设计的总体方案，给出了通过对XC95144中复用控制寄存器进行配置以实现MPU复位逻辑和CPM协议切换的实现方案和设计要点。-Introduced aided design using CPLD in the embedded system, march MPU complex logic functional design of the overall program given by XC95144 the re-configured using control registers in order to achieve the MPU reset switch logic and CPM protocol implementations and design elements.