最近在把Quartus Prime 15.1的工程移植到Vivado 2019.1,需要改变的地方还是很多的,先记一下差分信号在FPGA中的收发管脚定义和配置.以LVDS信号为例吧. 在7 Series FPGA & ZYNQ-7000 All Programmable SoC Library Guide for HDL Design(UG768)和7 Series FPGA SelectIO Resource(UG471)文档里面给出了HDL文件进行管脚分配的办法: 用OBUFDS原语(Pri
1.先说一下什么是pippip 是“A tool for installing and managing Python packages.”,也就是说pip是python的软件安装工具2.下面介绍怎么在linux下安装pip下载pip到/usr/local/src# cd /usr/local/src# wget "https://pypi.python.org/packages/source/p/pip/pip-1.5.4.tar.gz#md5=834b2904f92d46aaa333267f
Candies Time Limit: 1500MS Memory Limit: 131072K Total Submissions: 20067 Accepted: 5293 Description During the kindergarten days, flymouse was the monitor of his class. Occasionally the head-teacher brought the kids of flymouse’s class a large b