vhdl N

说明：  基于数码管独立显示和三色灯的交通指示系统设计(Design of Traffic Indicator System Based on Digital Tube Independent Display and Tri-color Lamp)

基于VHDL语言的DPLL电路的设计，给出了设计方案和部分源代码 (DPLL)

由于在网上很难下载到EDA技术－窦衡的PPT，所以本人经过学习后做成word，供大家下载。只针对VHDL语言部分和所有的程序。-Because the Internet is difficult to download to EDA technology- Douheng of the PPT, so I made after learning after the word, for all to download. Only for part of the VHDL language and all the procedures.

USB+FPGA电路设计原理图，实际的电路板运行正常，很有参考意义。-usb_sch

FPGA的驱动并行接口的DAC程序，效率较高。(FPGA-driven parallel interface of the DAC process more efficient.)

实现spi接口的传输，并多外接EEPROM读写数据-Spi interface to achieve the transfer, and multiple external EEPROM read and write data

Code VHDL for control VGA FPGA: Xilinx, Altera

用VHDL硬件描述语言开发的miniUART接口IP Core,用户可以将其嵌入到自己的FPGA模块中。-VHDL hardware description language developed by miniUART Interface IP Core, Users can be embedded into their own FPGA module.

说明：  八通道ad采集，用于和fpga的联调测试，需要注意ADS1278的模式类型(Eight channel AD acquisition)

当时是用于课程设计而编写的代码，经过的运行没有错误。精确率很高。基于FPGA的数字频率计VHDL源码（精确到1.1hz至20.0mhz）