采用自上而下的设计方法，实现了较困难的PCI总线控制器。
The top-down design methodology is used to realize the PCI bus controller.
本文详细论述了系统自上而下的设计方法及各部分硬件电路组成及单片机、CPLD的软件编程设计。
This paper describes the top-down design method, hardware circuit buildup in detail and gives program for CPLD and single chip computer.
本文详细论述了系统各部分硬件电路组成，单片机和FPGA的软件编程设计以及自上而下的设计方法。
This paper discusses in detail the different parts of the system hardware circuit, single chip computer, FPGA design, software programming and top-down design methods and so on.
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