CPLD

rda1846 + pic18f2552 usb circuit schematic.

有关于SD卡的音频部分！希望对大家有用！-SD cards have on the audio portion! Hope useful for everyone!

此vhdl程序实现了在FPGA上构建UART通信串口。分为两部分，UART的发送端transfer和接收端receiver。需要外部根据需求提供波特率时钟。(This program implements the building vhdl UART serial interface on the FPGA. Divided into two parts, UART transfer sender and receiver receiver. Required to provide the baud clock external demand.)

cordic算法的vhdl实现，内附有文档说明-cordic algorithm vhdl realized, a document containing a note

基于vhdl的dds任意函数发生器的实现和仿真

这是一个VHDL项目，用于在VIRTEX-4 xc4vsx35 FPGA板中执行接收信号的14位ADC。

Verilog语言编写的电话计费系统，这只是源代码，需要在quartusII等软件下运用-Verilog language telephone billing system, this is only the source code, the need to use software such as quartusII

verilog语言编写的jtag（边界扫描模块），初学的时候可以看看(verilog language jtag (boundary scan module), a novice when you can look)

Enhanced Audio Project by Dixie Xue & Wei Zhang -Enhanced Audio Project by Dixie Xue & Wei Zhang

这是一个基本的ARM7_Core 有基本功能 但不是太完善-This is a basic ARM7_Core has the basic functions, but not too perfect