da6578_testbench

this is a simulation fm in simulink mathlab this is one program with pll

Programmable IIR Filter written in Verilog and its respective modules.

说明：  可以获取各种字符，并在数码管显示出来，非常的靠谱且稳定(Various characters can be acquired and displayed on the digital tube.)

说明：  高斯最小频移键控（Gaussian Filtered Minimum Shift Keying），这是GSM系统采用的调制方式。数字调制解调技术是数字蜂窝移动通信系统空中接口的重要组成部分。GMSK调制是在MSK（最小频移键控）调制器之前插入高斯低通预调制滤波器这样一种调制方式。GMSK提高了数字移动通信的频谱利用率和通信质量。(Gauss Filtered Minimum Shift Keying is a modulation method used in GSM system. Digital modem technology is an important part of air interface of digital cellular mobile communication system. GMSK modulation is a method of inserting a Gaussian low-pass pre-modulation filter before the MSK (minimum frequency shift keying) modulator. GMSK improves the spectrum utilization and communication quality of digital mobile communication.)

说明：  Digital pre-distortion (DPD) is an advanced digital signal-processing technique that mitigates the effects of power amplifier (PA) nonlinearity in wireless transmitters. DPD plays a key role in providing efficient radio digital front-end (DFE) solutions for 3G/4G basestations and beyond. Modern FPGAs are a promising target platform for the implementation of flexible wireless DFE solutions, including DPD.

通信系统中数据的传输以帧为单位，在FPGA中帧头检测是通信系统中的一部分，该程序实现了FPGA中帧头的检测。(Transmission of data in a communication system in units of frames, the frame header is detected in the FPGA part of the communication system, the realization of the frame header is detected in the FPGA.)

对MAX5250芯片进行控制，实现DA转换输出。(Controlling MAX5250 Chip)

这个是vhdl中很常见的jk filpflop的文件只用于很小数位的变化 其中的jk文件是up down运算都符合的(This is a very common vhdl jk filpflop file is only used for very small changes in a digital file which jk is up down operations are met)

说明：  8通道24Bit同步A/D芯片AD7768的SPI接口例程(SPI interface routine of 8-channel 24bit synchronous A / D chip ad7768)

FPGA SPI 主要模块全部涵盖 时序解释 与DSP通信(FPGA SPI Timing interpretation covering all main modules communicate with the DSP)