Abstract:

To solve the problem that the traditional waveform generator can only generate few waveforms and can not generate arbitrary waveform, an arbitrary waveform generator system based on PCI(Peripheral Component Interconnect)bus and CPLD(Complex Programmable Logic Device) is designed.And the expounds software and hardware structure of system in detail.The hardware of system is  Introduced,  the connection circuit, filter circuit, homophase amplification circuit, temperature drift restrained circuit and secondary amplification circuit of bus interface chip CH365 and CPLD are mainly discussed.The key code of host computer and CPLD are given. The former is developed with Visual C++, the latter is developed with Verilog HDL(Verilog Hardware Description Language) language. The system could generate arbitrary waveform by the cooperation of CPLD and host computer, and it is convenient for users.

Key words: peripheral component interconnect(PCI) Bus, complex programmable logic device (CPLD), waveform generator, temperature drift