介绍了以数字信号处理器芯片TMS32 0C5 0为核心的保密机实现方案。围绕C5 0这一中心将系统分为C5 0及外围逻辑电路、存储器、TLC32 0 4 4及外围电路和电话接口电路 4部分硬件设计。该方案采用一片TMS32 0C5 0即可完成所有的加解密、回波抵消运算 ,并为密钥控制、自适应均衡等运算保留了系统资源 The implementation scheme of the security machine based on the digital signal processor TMS32 0C50 is introduced. Around the C5 0 center will be divided into C5 0 system and peripheral logic, memory, TLC32 0 4 4 and peripheral circuits and telephone interface circuit 4 part of the hardware design. The program uses a piece of TMS32 0C5 0 to complete all the encryption and decryption, echo cancellation operation, and for key control, adaptive equalization and other operations retained system resources