基于TMS320C50的通信保密机硬件设计

Hardware Design of the Communication Secrecy Machine Based on TMS320C50

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。

This paper introduces the implementation of the communication secrecy machine based on the TMS320C50. The hardware design includes four parts, the digital signal processing chip C50 and its periphery logical circuits, memory, TLC32044 and its periphery circuit,and the phone interface circuit. Only one TMS320C50 chip is adopted to accomplish the encrypting and decrypting operation, echo cancellation operation etc., at the same time, the system resource can be saved for the cryptographic key control and adaptive equalization operations.