基于DSP的高速数字电路设计中的信号完整性研究

数字信号处理芯片(DSP)是近年来迅速发展和广泛应用的高新技术,其应用领域日趋广泛,本文以TMS320VC33 DSP为处理器,设计和实现了测试系统硬件平台.高速数字电路设计中一个重要的技术难题就是如何保证信号的完整性,本文就该问题展开讨论,针对测试系统进行了信号完整性分析(SI),这对系统的抗干扰能力、可靠性的提高有很大的帮助,并对设计结果进行了仿真,证实了理论的可行性,并根据实际开发中的经验提出了在高速数字电路设计中保证信号完整性的具体措施.

Study of Signal Completeness for High - speed Digital Circuit Design Based on DSP

High speed digital signal processor (DSP) is the fast developing technology in the recent years. It has been widely applied in many fields. It can implement all kinds of digital processing algorithms more efficiently, such as image compress, digital communication etc. In various kind of DSP, the typical one is the TMS320 family produced by the Texas Instrument (TI) in U.S.A. On the grounds of the perfect capability and availability of DSP in the digital signal processing, the choice of DSP as the core component in the testing system is wise and advisable. And the TMS320C3X serials of TI company comprise of the most important parts in the floating DSP products. It is important that how insure signal completeness for high-speed digital circuit design. The paper discussed this problem, and given some concrete measures to insuring signal completeness. the analysis of the Signal Integration (SI) is considered, which is improved the anti-noise ability and the reliability of the system, and the feasibility of the design is proved by the simulation.