vhdl语言主要描述语句的说明和使用方法，内附例子可供学习提高...

SPI控制器，基于VERILOG描述，分模块设计，共6个模块，时钟产生模块，移位模块，主模块，从模块，定义模块，顶层模块。(SPI controller, based on the VERILOG description, sub-module design, a total of six modules, clock generation module, shift module, main module, from the modules, custom module, top module.)

IC的设计可以分为两个部分，分别为：前端设计（也称逻辑设计）和后端设计（也称物理设计），这两个部分并没有统一严格的界限，凡涉及到与工艺有关的设计可称为后端设计。(The design of IC can be divided into two parts: front-end design (also called logic design) and back-end design (also known as physical design). These two parts do not have a uniform and strict boundary, and the design related to process can be called back-end design.)

根据软件无线电的思想，提出了一种新颖的数字信号处理算法，对QPSK信号的相位进行数字化处理，从而实现对QPSK信号的解调.该算法允许收发两端载波存在频差，用数字锁相实现收发端载波的同步，在频偏较大的情况下，估算频偏的大小，自适应设置环路的带宽，实现较短的捕获时间和较好的信噪性能。整个设计基于XILINX公司的ISE开发平台，并用Virtex-II系列FPGA实现。用FPGA实现调制解调器具有体积小、功耗低、集成度高、可软件升级、扰干扰能力强的特点，符合未来通信技术发展的方向。(According to the idea of software radio, a novel digital signal processing algorithm, the phase of QPSK digital signal processing, enabling the demodulation of QPSK signals. This algorithm allows the sending and receiving ends of the carrier frequency difference exists, using digital phase-locked to achieve synchronization of sending and receiving end of the carrier, in the case of large frequency offset, frequency offset estimation of the size, adaptive set the loop bandwidth to achieve shorter acquisition time and better noise performance. The whole design is based on the company XILINX ISE development platform, and Virtex-II series with the FPGA. FPGA realization of a modem with a small size, low power consumption, high integration, software upgrades available, the characteristics of strong interference interference, in line with the future direction of ICT development.)

工具；

VHDL Code For Full Adder By Data Flow Modelling

基于FPGA的多功能数字钟的设计与实现 内附有详尽的Verilog HDL源码，其功能主要有：时间设置，时间显示，跑表，分频，日期设置，日期显示等-FPGA-based multi-functional Digital Clock Design and Implementation of typhoons and rainstorms are detailed Verilog HDL source code, its functions include: time settings, time display, stopwatch, frequency, date setting, date display

是我们在在实验室做的摸60计数，并用LED显示出来。-is done in the laboratory in the loss of 60 counts, and LED show.

交织器主要是对输入数据按照一定的规则打乱以便减少数据中过长的连0或者连1的出现。交织矩阵为行列矩阵，msgin为输入比特，msgout为交织输出比特，row和rol为交织器的行和列，可以通过改变col改变交织深度。先把输入的比特流数据改变为一个矩阵，再按照一定的方式输出为比特流数据

FPGA UART transmit and so on

listing program clock