基于FPGA的一种虚拟多波形智能函数发生器的有效方法

An Effective Method of Virtual Multi-waveform Intelligent Function Generator based on FPGA

以原理图和文本硬件描述语言(VHDL)的混合输入方式,利用参数可设置模块库(LPM),在Quartus Ⅱ 9.0软件上完成频率可调的多波形智能函数发生器设计和仿真验证.并在装有Cyclone Ⅱ系列FPGA芯片(EP2C35F672C8)的实验箱上利用嵌入式逻辑分析仪(Signal Tap Ⅱ)完成波形验证.实验结果表明,利用此方式设计的函数发生器波形选择性好、灵活性强、波形好,并且有利于后续对函数发生器的改进和对其它功能的扩展.

In this paper, based on the mixed input mode of schematic diagram and Vhsic hardware descrip- tion language（VHDL） , the design and simulation of the muhi -waveform intelligent function generator with ad- justable frequency is completed on the Quartus II 9 sofleware by using the library of parameterized modules （LPM）. In the experiment box equipped with Cyclone II series FPGA chip （EP2C35F672C8） , the embedded logic analyzer（ SignalTap II） is used to complete the waveform verification. Experimental results show that the function generator designed by this way has good selectivity, strong flexiblility and good waveform, and is condu- cive to the improvement of function generator and expansion of other functions.