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首先介绍IDT公司的可编程时钟发生器IDT5V9885的结构、工作原理及其在多时钟源技术方面的应用。其次详细阐述IDT5V9885提供的用户可编程的3-PLL(锁相环)的特性,通过一个整数分频的实例来说明其具体参数的设置方法,并利用Xilinx公司的iPMACT软件在JTAG编程模式下实现编程下载。最后得出结论:可编程时钟发生器IDT5V9885在数据通信、通讯行业、数字消费、网络应用和工业市场上有广阔的应用前景。
First introduce IDT’s programmable clock generator IDT5V9885 structure, working principle and its application in multi-clock source technology. Secondly, the IDT5V9885 provides a detailed description of the characteristics of the user-programmable 3-PLL (Phase Locked Loop) provided by the IDT5V9885. The method for setting the specific parameters is illustrated by an example of integer division, and is implemented in JTAG programming mode using Xilinx iPMACT software Programming download. Finally, the conclusion: Programmable clock generator IDT5V9885 in the data communications, communications, digital consumer, network applications and industrial markets have broad application prospects.