quartusii 三分频电路，大家帮参考一下，有什么问题

应用背景在本文中，一个高性能和高度优化Rijndael AES算法的硬件实现了设计并实现Xilinx Virtex-5 xc5vlx50FPGA器件。设计采用模块化利用VHDL语言的方法。设计工作正确如图所示。这个所提出的设计的性能进行评估的基础上吞吐量和面积。我们的设计利用了速度339.087兆赫，这意味着吞吐量4.34用399片Virtex-5 FPGA面积Gbps。关键技术本文提出了一种有效的Rijndael算法的硬件实现高级加密标准（AES）加密算法采用最先进的现场可编程门阵列（FPGA）。在非常高速集成电路设计的设计硬件描述语言（VHDL）。时序仿真进行验证所设计的电路的功能。性能评估也做了吞吐量和区域。在国家的最先进的Xilinx Virtex-5实现设计（xc5vlx50ffg676-3）FPGA实现吞吐量4.34千兆位/秒，总共使用了399片。

高精度直流信号源，DAC1220，20位分辨率，双极性输出(High-precision DC source, DAC1220,20 bit resolution, bipolar output)

verilog 编写的I2C程序，控制D/A的(I2C program written by Verilog to control D/A)

时间设置 可以作为设计中的一个小模块进行使用 方便快捷(time setting)

design and implement a digital system on the Altera NIOS board which will read an analogue input using MicroChip’s SPI MCP3202 12-Bit A/D converter. The 8 most significant bits of the converted data will be displayed on two seven segments of the NIOS development board. The sampling frequency is 20kHZ. Use a potentiometer.(design and implement a digital system on the Altera NIOS board which will read an analogue input using MicroChip' s SPI MCP3202 12-Bit A/D converter. The 8 most significant bits of the converted data will be displayed on two seven segments of the NIOS development board . The sampling frequency is 20kHZ. Use a potentiometer.)

code for kcpcm3 : Describes the working of KCPCM3 embedded in picoblaze xilinx-code for kcpcm3 : Describes the working of KCPCM3 embedded in picoblaze xilinx

用case 语句描述的4 选1 Mux 源码程序，好用(-4 with a case statement described 1 Mux source program, easy to use)

基于DS1302芯片的VERILOG 语言数字钟。可实现年月日时分秒显示。(DS1302 chip-based language VERILOG digital clock. Date can be achieved when every minute display.)

vhdl,七段数码管驱动程序，完成数字显示功能-vhdl, seven-segment digital tube driver, complete the digital display

一个精确时钟的v-log程序，只用一个全局时钟，增加了精确度(An accurate clock in the v-log program, only one global clock, increased accuracy)