DDR SDRAM控制器verilog代码及中文说明文档,对DDR开发很有用的哈。...

系数为4的扰码生成器，并每四位扰码产生一个触发串并转换的触发信号，可用于4b/5b编码的触发信号。verilog程序，带test程序-coefficient of the four scrambler generator, and every four scrambler have triggered a string conversion and the trigger signal can be used to trigger 4b/5b coding signal. Verilog procedures, with test procedures

FSK信号发生器，基于VHDL语言，好用的！-FSK signal generator, based on the VHDL language, useful!

说明：  实现（7,4）BCH码的编码和译码。已知生成矩阵和校验矩阵，通过c=m*G进行编码，译码时利用伴随式译码。s=c*H‘，求得伴随式，对应的错误图样找到错误位置，对错误位置进行更正，得到译码结果。(Coding and decoding of (7,4) BCH Codes)

FPGA做波形发生器，产生8种波形，包括三角波，正弦波，锯齿波，方波等。(FPGA is used as waveform generator,Generate 8 waveforms, including triangle, sine, sawtooth, square, etc.)

异步FIFO的实现，可综合，可验证] keywords:almost_full,full,almost_empty,empty-The realization of asynchronous FIFO can be comprehensive, verifiable] keywords: almost_full, full, almost_empty, empty

通过本文章的学习能够使我们设计一些简单的逻辑电路和系统。很快我们就能过渡到设计相当复杂的数字逻辑系统。-To learn through this article, will enable us to design some simple logic circuits and systems. Soon we will be able to transition to the design of complex digital logic systems.

通信系统的FSK调制程序，比较实用，包括完整的工程-FSK modulation communication system procedures, more practical, including the complete works

四阶数字滤波器 用不同的算法设计数字滤波器，并且有详细的是用方法(Fourth-order digital filter design with a different digital filter algorithms and a detailed method is)

说明：  DA芯片输出控制 SPI协议 只写不读 FPGA用 verilog(DA-chip SPI protocol output control does not read write-only FPGA with verilog)

基于VHDl的2FSK调制！用的是altera的quartus11软件(Based on VHDl the 2FSK modulation)