sdram controller vhdl

一个电子中的verilog实验源代码。适合verilog初学者学习参考-an electronic experiments of Verilog source code. Suitable for beginners learning Verilog reference

《无线通信FPGA设计》包含的所有例子源码，包括matlab仿真和verilog源码，本书内容还是非常丰富的，涉及无线通信领域各个方面。不过对于一些比较新的技术，其FPGA实现部分过于简略，难以在工程中实用化。(" Wireless FPGA Design" contains all the examples source code, including the matlab simulation and verilog source code, the contents of this book is still very rich, involved in all aspects of the field of wireless communications. But for some relatively new technology, some of its FPGA implementation is too brief, it is difficult in practical engineering.)

65位FIR数字滤波器的设计~~其中有通过仿真得出得数据 ~可以通过数据输入完成滤波实验~对数字滤波器得整个算法进行了分析包括输入分组相加 然后相乘得过程-65 FIR digital filter design ~ ~ with simulation data to come in through the importation of data from experiments completed filtering of the digital filter in the whole algorithm analysis including input a sum then multiply in the process

关于基数分频技巧设计,基于VHDL语言,对实际设计有帮助-DIVIDE

说明：  基于FPGA，用verilog hdl语言实现串口收发实验(Based on FPGA, using Verilog HDL language to achieve serial port transceiver experiment)

半带滤波器，用于sigma-delta DAC中的设计(Half-band filter for sigma-delta DAC design)

Rst是低电平有效的系统复位信号，Clk是时钟信号。AB[5：0]是地址信号，DB[7：0]是数据信号，wr是低电平有效的写信号。start是启动信号。 模块中有一个64x8的双端口的存储器。系统复位结束后，可以通过AB、DB和wr信号向同步存储器写入数据。当写入64个数据后，给出一个Clk周期宽度的脉冲信号start，则系统从存储器0地址处开始读出数据，读出的8位数据从低位开始以3位为一组，每个时钟周期输出一组，即第一个时钟周期输出[2：0]位，第二个时钟周期输出[5：3]位，第三个周期输出1地址的[0]位和0地址的[7：6]位，直至将存储器中64x8数据全部输出。若最后一组不足三位，则高位补0。 (Rst is an active-low system reset signal, Clk is a clock signal. AB [5: 0] is the address signal, DB [7: 0] is the data signal, wr write signal is active low. start is the start signal. Module in a dual port memory of 64x8. After the reset, you can write data to the synchronous memory by AB, DB and wr signals. When data is written to 64, given the width of a pulse signal Clk cycle start, the system begins to read the memory address 0, 8 data read out a low starting with three as a group, each clock outputs a set period, which is the first clock cycle of the output [2: 0] bits, the second clock cycle output [5: 3] position, the third cycle of the output of an address [0] and 0 address [7 : 6] bit, until all the data in memory 64x8 output. If the last group of less than three, the high 0s.)

xilinx 开发板原程序，双口RAM控制-Xilinx development board the original procedures, dual-port RAM control

此代码在FPGA使用VHDL了FFT的基本思想。

下采样与灰度