介绍了一种利用CY7C68013的通用可编程接口(GPIF)访问TMS320VC5402内部存储器的方法。应用Cypress公司开发的GPIF波形设计器设计了用单字节写方式控制主机接口(HPI)内部寄存器、用FIFO读/写方式读/写DSP内部RAM的3种控制波形,并在此基础上着重分析了读/写DSP内部RAM的GPIF波形时序。最后,介绍了相应的固件程序设计和设备驱动设计,并把该方法应用于信号发生器输出信号的采集,验证了该方法的可行性。 This paper introduces a method of accessing the internal memory of TMS320VC5402 by using the general programmable interface (GPIF) of CY7C68013. The GPIF waveform designer developed by Cypress has designed three kinds of control waveforms of controlling the internal interface of the host interface (HPI) by single-byte writing and reading / writing the internal RAM of the DSP by FIFO read / write mode Analyze the GPIF waveform timing of reading / writing DSP internal RAM. Finally, the corresponding firmware design and device driver design are introduced, and the method is applied to the signal generator output signal acquisition to verify the feasibility of the method.