摘要
由于PXI协议相对复杂,在PXI测控系统中通常采用专用接口芯片PCI9054来简化硬件和代码的设计,将复杂的PXI接口转换为相对简单的用户接口。在工程应用中通过状态机实现对PCI9054进行操作,为此提出了一种只有4种工作状态的PCI9054简化状态机技术,大大减少了状态机的工作状态,易于在FPGA内通过编写VHDL语言代码实现。通过应用表明,该技术具有极高的可靠性和稳定性,可以有效地实现对PXI总线的操作,完全满足PXI测控系统实时、高速数据传输的需求。
Due to PXI protocol is complex,PCI9054 is often used to simplify the hardware and code design in the measurement and control system based on PXI bus,which can convert the PXI interface into a simple user interface.PCI9054 is usually operated by state machine in practical application.This paper proposes a kind of simplified state machine technology which only has four working states and can reduce the working states and realize by VHDL language in FPGA.The results of the application show that this technique has high reliability and stability,which can operator the PXI bus effectively,and can meet the demands of high speed and real-time data transmission.
出处
《电子测量技术》
2011年第2期50-53,共4页
Electronic Measurement Technology
