sp605 multiboot rdf 0028 13.2 c

掌握二-十进制(BCD码)异步计数器的工作原理和设计方法； 掌握中规模集成二-五-十进制异步计数器74LS90的功能及其应用；(Master II- Decimal (BCD code) the principle and an asynchronous counter design grasp the scale of integration in two- five- Decimal asynchronous counter 74LS90 features and applications )

AD conversion using LTC1298

利用xilinx开发板，使用嵌入式系统，编写的ps2键盘和利用dds原理产生正弦波的程序(Using xilinx development board, the use of embedded systems, the preparation of the ps2 keyboard and use the procedures dds elements of the sine wave)

说明：  使用FPGA的FIFO，状态机，乒乓操作等实现了异步UART。(The use of FPGA-FIFO, state machine, ping-pong operation to achieve the asynchronous UART.)

 交通灯控制器控制红（r）、绿（g）、黄（y）三种不同颜色的交通灯，这三种不同颜色灯的亮、灭分别由三个定时器（timer1、timer2、timer3）控制；  当某个定时器工作时，它所控制的交通灯亮，直到设定的定时时间到（该定时器状态由’0’变’1’），交通灯跳转到另一种状态；  clk是脉冲控制端（图中未标出）；reset是异步复位端，复位状态为红色交通灯亮；  输出端r、g、y分别表示三种颜色交通灯的亮、灭状态。 ( traffic light controller control red (R), green (g), yellow (y) three different colors of traffic lights, three different colors of bright lights, off by three timer (Timer1, Timer2, Timer3 ) control  When a timer work, it controls the traffic lights, until the set timing (the timer status ' 0 ' for ' 1' ), traffic lights Jump to another state  clk is the pulse control terminal (not shown) reset is asynchronous reset terminal, the reset state for the red traffic lights  output terminal r, g, y represent the three colors of traffic lights bright, the off state.)

此源码为线性相位滤波的vhdl源码与设计心的体会，理论分分析与工程实践总结相结合，有非常大的参考价值 可直接使用。 (The source for the linear phase filter VHDL source code and design of the heart experience, theoretical analysis to summarize the combination of engineering practice, a very large reference value can be used directly.)

作为一种古老的接口，支持的分辨率远高于HDMI和DVI，1920分辨率根本不在话下，本设计在QUARTUS下设计，编译，加载运行通过效果良好。

设计11位巴克码序列峰值检测器，巴克码相关器原理：巴克码相关器能够检测巴克码序列峰值，并且能够在1bits错误情况下检测巴克码序列峰值。(A 11-bit Barker code sequence peak detector is designed. The principle of Barker code correlator is that the Barker code correlator can detect the peak value of Barker code sequence and detect the peak value of Barker code sequence in the case of 1 bits error.)

实现扰码的功能，主要为64位在pcs子层传输的扰码器设计(To achieve the functions of scrambling code)

通过串口发送，实现FPGA与stm32的dds发生器(Implementation of DDS generator)