多DSP局部总线与VME总线的接口设计

在多DSP信号处理系统的设计过程中,开发基于标准总线的信号处理模板已经成主流设计方案。这种设计方案的难点就是局部总线到标准总线的时序转换比较复杂。在详细介绍VME总线功能特点的基础上,给出了一种在FPGA控制下实现的工业控制计算机通过VME总线与多DSP信号处理板局部总线进行通信的接口设计方案。FPGA的控制功能采用状态机工作方式实现。

Interface Design between Local Bus of Multiple DSPs and VME Bus

For the multiple DSPs signal processing system,it has been a popular method to design a signal processing module basing on standard bus.However,the difficulty of this method lies in the complexity of timing conversion between local bus and standard bus.Basing on the detail analyses of the function of VME bus,a FPGA design of interface between the local bus of multiple DSPs and the VME bus of industrial control computer is introduced.The control function of FPGA is implemented by state machine.