Verilog HDL for Half Adder, Full Subtractor, Half Subtractor and 2x4 decoder.

Xilinx公司网站下的SDRAM Controller的参考设计，经过验证-Xilinx website of SDRAM Controller reference design, validated

FPGA控制AD逐点采集信号，并将AD转换后的数据串行发送出去。(FPGA to control the signal sampling point by point AD, AD conversion and serial data sent.)

hilbert 变换的vhdl源代码，来源于网上，本人也做过简单的8抽头的，但这个的算法还没搞懂，希望懂行的下载了研究一下，给个中文的简单的说明！(hilbert transform VHDL source code from the Internet, I have been a simple 8-tap, but even before they get to know this algorithm, I hope knowledgeable downloaded to look for a simple description of the Chinese!)

FPGA核心板EP4CE10F17C8电路原理图(Circuit schematic diagram of EP4CE10F17C8 core board of FPGA)

。给出了时域滤波的基本原理以及通常采用的 IIR 椭圆地物杂波滤波器的设计方法。重点研究了回归滤波器这一时域滤波算 法。从正交多项式的拟合出发，给出了回归滤波器抑制地物杂波的基本原理及 其滤波实现过程。通过对回归滤波器的计算复杂度的研究，寻找使回归滤波器 计算量最小的正交多项式。分析了回归滤波器频率响应特性，比较了回归滤波 器与IIR 椭圆地物杂波滤波器的计算复杂度。利用仿真的雷达信号，分析了回 归滤波器的地物杂波抑制性能。回归滤波器实际上是一高通滤波器，它在滤掉 低频地物杂波的同时，对落在滤波器阻带内的天气回波信号同样会造成衰减。 在天气回波信号谱宽固定的情况下，通过改变天气回波信号的平均多普勒频率， 分析了回归滤波器对它的衰减情况。在基于一组实际采集的雷达信号的基础上， 给出了回归滤波器的地物杂波抑制比随着滤波器阶数的变化情况。(Firstly, this dissertation introduces the research background and significance of ground clutter suppression, analyzes the characteristics of the ground clutter and weather signals in the Doppler weather radars and simulates Doppler radar echo signals (It includes ground clutter, weather echo signals and the mixture of them). The simulated signals are used later to study the time and frequency domain ground clutter suppression. Secondly, this dissertation talks about the time domain filtering, gives the basic theory of time domain filtering and describes the design method of the usually used fifth-order elliptic infinite impulse response (IIR) ground clutter filter. In the time domain, the work focuses on the regression filter. From the orthogonal polynomials fit, this dissertation gives the basic theory of the regression filter for ground clutter suppression and the filtering process using a regression filter. Through the study of the computational complexity of regression)

第十章的代码。 本书通过100多个模块实例，详细地讲解了Verilog HDL程序设计语言，全书共分13章，内容涉及VerilogHDL语言基本概念、建模、同步设计、异步设计、功能验证等，实例包括各种加法器/计数器、乘法器/除法器、编码器/译码器、状态机、SPIMaster Controller、I2C Master controller、CAN ProtocolController、Memory模块、JPEG图像压缩模块、加密模块、ATA控制器、8位RISC-CPU等及各个实例模块相应的Testbench，所举实例具有很强的实用性和代表性，每个实例均给出了介绍、功能分析、程序代码和结果演示(Chapter X code. This book by more than 100 module instance, explain in detail the Verilog HDL programming language, the book is divided into 13 chapters, covering basic concepts VerilogHDL languages, modeling, synchronous design, asynchronous design, functional verification, etc. Examples include a variety of additions device/counters, multipliers/dividers, encoders/decoders, state machines, SPIMaster Controller, I2C Master controller, CAN ProtocolController, Memory modules, JPEG image compression module, encryption module, ATA controller, 8-bit RISC-CPU etc. and the various instances of the corresponding module Testbench, The examples are highly practical and representation, each instance of it all gives the introduction, functional analysis, program code and the results demonstrate)

说明：  参照can芯片 saj1000控制器结构，写的can控制器(According to the structure of can chip saj1000 controller, the CAN controller is written)

对与单片机常用的功能看门狗，本程序用vhdl硬件语言实现次功能。-Commonly used with single-chip watchdog function, the procedures for using VHDL hardware language functions realize times.

Great guide for writing VHDL

uart 收发器 verilog 代码，实现自收发功能 sys clk = 25m, baud 9600 停止位1， 无校验位； 代码实现了串口自收发功能，及把从 PC 收到的内容都发送会 PC, 其他波特率，自行修改代码即可，在 alter 的FPGA 上调试通过； (verilog code uart transceiver to achieve self-transceiver function sys clk = 25m, baud 9600 1 stop bit, no parity code from the transceiver features a serial port, and the contents received from the PC will send the PC, another Potter rate, self-modifying code can, in the alter of the FPGA, debugging through )