Verilog ADPLL文件和testbench。V

使用vhdl语言编写的100个常用程序的例子-The use of VHDL language 100 examples of commonly used procedures

24bitAD数据采样进行串并转换，并行输出。另包括24位DA并串转换，串行输出。(24bitAD data sampling and converted to strings, parallel output. Other notable features include 24-bit DA and string conversion, serial output.)

DDS的频率转换可以以近似认为是即时的，这是因为它的相位序列在时间上是离散的，在频率控制字改变之后，要经过一个时钟周期之后才能按照新的相位增量增加，所以也可以说它的频率转换时间就是频率控制字的传输时间，-DDS frequency conversion can be considered similar to real-time, this is because it is the phase sequence in time is discrete, in the frequency control word change after one clock cycle to go through before a new phase in accordance with the incremental increase, so it can be said of the frequency switching time is the frequency control word transmission time,

说明：  uart implementation and documentation, this describes the basic steps in building your own uart module on verilog and programming them on an fpga device

verilog实现rtc文档，可用于实现RTC。(verilog realize rtc document can be used to implement the RTC.)

This verilog vga test circuit

该源码为VHDL语言编写的分频器，在W-4b教学平台上通过验证-The VHDL source for the prescaler languages, W-4b in the teaching platform validated

- RS码是Reed-Solomon 码（理德－所罗门码）的简称，它是一类非二进制BCH码，在RS码中，输入信号分成k·m比特一组，每组包括k个符号，每个符号由m个比特组成。(- RS code is a Reed-Solomon code (Reed- Solomon codes) for short, is a non-binary BCH code, the RS code, the input signal is divided into a set of k · m bits, each including k symbols, each symbol consists of m bits.)

说明：  biss协议源码交流 verilog hdl源码，测试可用(Biss protocol ,achieved by verilog HDL,can be verify using modelsim or other simtools.)

verilog 编写的I2C程序，控制D/A的(I2C program written by Verilog to control D/A)