DSP和FPGA并行通信方法研究

本文介绍了一种DSP与FPGA之间的并口通信方法,它实际应用于陀螺数字检测电路。此方法使用TMS320F2812芯片的外部数据总线接口(XINTF)与FPGA相连接,利用它的中断和读写选通信号(XRD与XWE)作为判断位与使能位完成通信。文中给出了它们的硬件连接方式和通信部分的软件程序,并用modelsim对FPGA通信程序进行了仿真。通过仿真结果以及在实际电路中的实验调试,表明此方法可以实现DSP与FPGA之间的并行通信,能有效提高通信速度。

Research on parallel communication between DSP and FPGA

Method of communication between DSP and FPGA was introduced,which used in the gyroscope digital detection circuit.The external interface(XINTF) data bus of the TMS320F2812 chip is connected with FPGA in the method.The interrupt signals of the DSP are used as judgment signals,and the read-write select (XRD and XWE) signals are used as enable signals to complete communication.The hardware interface circuit between DSP and FPGA and the software program of communication part are introduced.Then the FPGA communication program is simulated by modelsim.Through the result of the simulation and the experiment debugging in the real circuit,it is indicated that the method can achieve communication between DSP and FPGA,and the speed of communication is improved availably.