在 VHDL 中的离散余弦 Transform(DCT/IDCT)

FPGA编程，经过团体奋战完成，全是底层的IIc和sci通信，完整版。(FPGA programming, after groups fight to the finish, all underlying SCI and IIc communication, full version)

主要是基于FPGA(EP2C8Q208I8)下的SRAM驱动，SRAM型号为IS61LV25616，程序语言为Verilog,开发环境为quartusII 7.0,为一工程，可直接下载到FPGA中，含电路图(Mainly based on FPGA (EP2C8Q208I8) driving under the SRAM, SRAM model IS61LV25616, programming language for Verilog, a development environment for quartusII 7.0, for a project, can be downloaded directly to the FPGA, including circuit diagrams)

四通道DDS信号发生器，很好用的代码，大家一起分享(Four-channel DDS signal generator)

高速双端口RAM的vhdl实现。包含仿真波形-High-speed dual-port RAM realize the VHDL. Contains the simulation waveform

VHDL实现PI调节的算法。内部使用整数计算，避开了浮点数的运算。仿真结果正确-VHDL realize PI regulator algorithm. Internal use integer calculations to avoid the floating point arithmetic. The simulation results correctly

自己完成的项目，成功用vhdl语言实现数字跑表，可存储。

说明：  document qpsk vhdl code

HDLC接口协议的FPGA实现使用verilog-design of HDLC

微功率无线模块、小功率无线数传模块、远距离无线通信模块、数传电台、远距离无线通信基站以及无线通信收发器等系列产品，产品主要有无线数传模块、无线通信模块、无线通讯模块、无线收发模块、无线模块、无线射频模块等等。-micropower wireless modules, low-power wireless module, remote wireless communications modules, data-transmission stations, long-distance wireless communications base stations and wireless communications transceiver series products, the main products are wireless module, wireless communications modules, wireless communications modules, wireless transceiver module, wireless modules, RF modules and so on.

verilog编写，巧妙的通过计数方式完成了三角波的波形，可直接对da输出。(verilog written, cleverly accomplished by counting the triangular waveform can be output directly to da.)