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PSOC在低频信号发生器中的应用
2013-05-15 09:54:34 益择发布韩喜春，高旭东，张春艳
(黑龙江工程学院电子_5-程系，黑龙江哈尔滨150050)
摘要：介绍一种基于Cypress公司PSOC的低频信号发生器的系统设计和实现方法。PSOC是一种微处理器加
CPLD的模拟数字混合片上系统，它在集成开发环境Creator下提供的大量固件元件为在单芯片内实现信号发生器
提供可行性。PSOC强大的图形化绵程语言将信号发生器的固件元件原理图编译成内核和元件对应的C语言程序，
主程序和中断程序按设计的功能要求调用元件函数即可完成软件设计，简化信号发生器的设计难度。用PSOC设
计的低频信号发生器，采用图形化编程，利用DMA技术，单芯片可以实现全部功能。PSOC为模拟与数字混合系统
的设计提供一种全新的设计思想，是一种有发展前途的设计方案。
关键词：信号发生器；PSOC；DMA；脉冲宽度调制；数模转换器；定时器
中图分类号：TN911．7 文献标志码：A 文章编号：1671—4679(2012)01 0056—04
Application of PSOC in the low—frequency signal generator
HAN Xi—chun GAo Xu—dong ZHANG Chun-yan
(Dept．of Electronics Engineering，Heilongjiang Instiute of Technology，Harbin 150050，China)
Abstract：Based on the PSOC from Cypress Semiconductor Corporation，a system design and realization of
the low-frequency signal generator have been introduced．PSOC is a hybrid analog—digital System on a Chip
(SoC)consisting of micro—processor and CPLD，which adds the feasibility of the signal generator design by
a single chip under the help of considerable firmware units from the IDE Creator．PSOC‘s powerful graph—
ical programming language compiles schematic diagrams into C language programs corresponding to the
kernel and the components，with the software design can be completed with component functions being
called by main program and interruption subroutines according to the requirements，all results in simplify—
ing the design of signal generators．W ith PSOC design low—frequency signal generator，employ graphics
programming，use DMA technology，single chip can implement whole function．In conclusion，PSOC，pro—
viding a novel design idea with the hybrid analog—digital SoC，is a promising scheme．
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