摘要
高速的D/A转换电路是高速音频复录设备的核心部分。本文阐述了一种基于PCI总线的双通道高速D/A转换卡的硬件设计。文中在比较了两种接口设计方案后,选择了接口芯片PCI9054的方案并阐述了原因。D/A转换电路采用了AD公司的AD768和AD811的组合,以满足D/A转换的速度和精度要求。最后本文在简要介绍WDM驱动模型的基础上,详细阐述了D/A卡在Windows2000操作系统下的驱动程序的设计思想与实现方法。
The high-speed digital-to-analog conversion circuit is the core of a high-speed audio cassette duplieator,This paper discusses the hardware design of a two- channel DAC based on PCI bus. By comparing two approaches of the PCI interface design, the chip PCI9054 is chosen and an explanation of using this approach is given. To satisfy the speed and resolution demand of the DA circuit, a combination of the chip AD768 and AD811 is used. Furthermore, after a introduction of windows driver model （WDM）, the paper discusses in details about the driver development based on the operation system Windows2000.
出处
《中国测试技术》
2005年第5期100-102,共3页
CHINA MEASUREMENT & TESTING TECHNOLOGY
