- 芯片选择
- 组件选通
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chip select中文什么意思
例句与用法
- Dynamic descriptions of adc and chip selecting method
动态描述与器件选取方法 - Chip select generator
片选信号自动生成 - In the design of this project , the author has participated in the following works : the system design , chips selected , and making schematic circuit diagram of the interface hardware , and pcb design 、 debug , and the fpga control - program design , system testing and debugging , and some drivers of wince . this paper will introduce the principle of the dvb - t series standards firstly , then the sketchy design of the system will be stated
本人主要从事系统设计，接收板硬件原理图及印制电路板（ pcb ）设计制作并调试， fpga控制程序设计， wince部分驱动程序开发和系统联调等工作。本文在介绍数字地面电视广播（ dvb - t ）相关标准的基础上，阐述了系统总体设计，软硬件实现具体方案与原理 - It has been playing an important role in equipping all kinds of arms and services for campaigns , tactical exercises and emergent actions etc . based on the detailed analysis of the exchange ' s architecture and implementing , this thesis points out some disadvantages of the device , such as too many absolute components , not very high enough reliability and security , very large size and weight , operating and maintaining difficultly . considering low power requirement and man - machine interface optimizing design at the same time , the thesis come up with an integrated design scheme to the previous device based on " mcu + cpld / fpga architecture " : ( 1 ) signal frequency dividing , timing frequency producing , 20 customers " led states controlling are implemented in cpld ; ( 2 ) decoding , latching data and controlling signals are implemented in cpld by bus interface between mcu and cpld ; ( 3 ) chip selecting principles and mcu idle mode design are completed under the consideration of low power requirement ; ( 4 ) operation by chinese lcd menus is adopted in the man - machine interface
本项目以该交换机为研究对象，在详细分析原设备的系统结构和功能实现方式的基础上，指出该机型在使用过程中存在技术相对陈旧、分立元件过多、可靠性和保密性不够、体积大、重量大、维修困难等问题，同时结合系统的低功耗需求和优化人机接口设计，本文提出基于“单片机+ cpld fpga体系结构”的集成化设计方案：在cpld中实现信号音分频和计时频率生成电路、 20路用户led状态控制电路； cpld与单片机以总线接口方式实现译码、数据和控制信号锁存功能的vhdl设计；基于低功耗设计的器件选型方案和单片机待机模式设计；人机接口的lcd菜单操作方式。