用Verilog实现的八位存储器参考代码

LabVIEW FPGA SPI implementation

可供初学者学习 比较简单 一读就能明白 LED7数码显示程序(Relatively simple for beginners to learn the first reading of the digital display program will be able to understand LED7)

扰码器的FPGA实现，选择的扰码器规格为15位移位寄存器。(FPGA scrambler, scrambler specifications for a 15 bit shift register.)

FPGA 全数字化实现信号发生器，产生正弦、三角、方波；幅值频率可调

实现FPGA多字节的稳定串口通信，改编自特权同学的FPGA代码(Realize the stable serial communication of multi-byte FPGA and adapt the FPGA code from Quan via Quartus by Verilog)

本代码用verilog语言配合sopc和nios实现了串口调试的目的。软件编程用C语言描述，只是比较简单的例子，适合初学者做了解用，本人亲自在EP2C8Q上实践。(The code to use verilog language sopc and nios achieved with serial debugging purposes. Software programming using C language description, but relatively simple example for beginners to do with understanding, I personally EP2C8Q on practice.)

AB相编码器解码接口_PWM输出SOPC方案及其在运动控制卡和伺服驱动器中的应用(AB phase encoder decoder interface _PWM output SOPC program and its application in motion control card and servo drive)

低电源电压范围为1.8 V至3.6 V 超低功耗： - 主动模式：280μA，在1 MHz，2.2伏 - 待机模式：1.1μA - 关闭模式（RAM保持）：0.1μA 五省电模式 欠待机模式唤醒 超过6微秒 16位RISC架构， 125 ns指令周期时间 12位A/ D转换器具有内部 参考，采样和保持，并 AutoScan功能 16位Timer_B随着三† 或七‡ 捕捉/比较随着阴影寄存器 具有三个16位定时器A 捕捉/比较寄存器 片上比较器 串行通信接口（USART）， 选择异步UART或 同步SPI软件： - 两个USART（USART0 USART1）的† - 一个USART（USART0）‡ 掉电检测 电源电压监控器/监视器 可编程电平检测 串行板载编程， 无需外部编程电压 安全可编程代码保护 融合(Low Supply-Voltage Range, 1.8 V to 3.6 V Ultralow-Power Consumption: − Active Mode: 280 µ A at 1 MHz, 2.2 V − Standby Mode: 1.1 µ A − Off Mode (RAM Retention): 0.1 µ A Five Power Saving Modes Wake-Up From Standby Mode in Less Than 6 µ s 16-Bit RISC Architecture, 125-ns Instruction Cycle Time 12-Bit A/D Converter With Internal Reference, Sample-and-Hold and Autoscan Feature 16-Bit Timer_B With Three† or Seven‡ Capture/Compare-With-Shadow Registers 16-Bit Timer_A With Three Capture/Compare Registers On-Chip Comparator Serial Communication Interface (USART), Select Asynchronous UART or Synchronous SPI by Software: − Two USARTs (USART0, USART1)† − One USART (USART0)‡ Brownout Detector Supply Voltage Supervisor/Monitor With Programmable Level Detection Serial Onboard Programming, No External Programming Voltage Needed Programmable Code Protection by Security Fuse)

基于BCH码的ECC纠错算法，可纠错2位错误码，供参考(Based on BCH code ECC error correction algorithm, two error codes can be corrected for reference.)

VHDL Design of BCD to 7-segment decoder using PROM