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频率计
说明: 1、能正确显示输入信号频率;
2、测量频率范围为1Hz ~ 999999Hz;
3、测量结果以十进制数字显示;
4、能测量幅值较小的信号频率;
5、有自动刷新输出数据的功能(如5s刷新一次);
6、有自检模块(如产生100Hz的校准方波);(1. It can correctly display the input signal frequency;
2. The frequency range of measurement is 1Hz ~ 99999hz;
3. The measurement results are displayed in decimal;
4. It can measure signal frequency with small amplitude;
5. It has the function of automatically refreshing the output data (e.g. once in 5S);
6. Self checking module (such as generating 100Hz calibration square wave);)
- 2020-03-28 16:37:56下载
- 积分:1
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uart_rx
uart接收模块
// 波特率:9600
// 数据位:8
// 停止位:1
// 校验位:0(UART receive module
Baud rate: 9600 /
/ / data: 8
/ / stop: 1
/ / check digit: 0)
- 2017-07-10 13:56:54下载
- 积分:1
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VHDL 基础语法篇
说明: VHDL 基础语法篇 —— VHDL
VHDL硬件描述语言
1.1 VHDL概述
1.1.1 VHDL的特点
VHDL语言作为一种标准的硬件描述语言,具有结构严谨、描述能力强的特点,由于
VHDL语言来源于C、Fortran等计算机高级语言,在VHDL语言中保留了部分高级语言的原
语句,如if语句、子程序和函数等,便于阅读和应用。具体特点如下:
1. 支持从系统级到门级电路的描述,既支持自底向上(bottom-up)的设计也支持从顶向下
(top-down)的设计,同时也支持结构、行为和数据流三种形式的混合描述。
2. VHDL的设计单元的基本组成部分是实体(entity)和结构体(architecture),实体包含设
计系统单元的输入和输出端口信息,结构体描述设计单元的组成和行为,便于各模块之间数
据传送。利用单元(componet)、块(block)、过程(procure)和函数(function)等语句,
用结构化层次化的描述方法,使复杂电路的设计更加简便。采用包的概念,便于标准设计文
档资料的保存和广泛使用。(VHDL Basic Grammar Paper)
- 2020-06-20 14:20:01下载
- 积分:1
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05_fifo_test
说明: FIFO: First in, First out 代表先进的数据先出,后进的数据后出。Xilinx 在 VIVADO 里为我们已经提供了 FIFO 的 IP 核, 我们只需通过 IP 核例化一个 FIFO,根据 FIFO 的读写时序来写入和读取FIFO 中存储的数据。(FIFO: first in, first out represents the first out of advanced data, and the last in data is the last out. Xilinx has provided us with the IP core of FIFO in vivado. We only need to instantiate a FIFO through the IP core, and write and read the data stored in FIFO according to the FIFO read-write timing.)
- 2021-04-08 22:19:20下载
- 积分:1
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csbar(3) : X"E0000" to X"E01FF"
-- M68008 Address Decoder
-- Address decoder for the m68008
-- asbar must be 0 to enable any output
-- csbar(0) : X"00000" to X"01FFF"
-- csbar(1) : X"40000" to X"43FFF"
-- csbar(2) : X"08000" to X"0AFFF"
-- csbar(3) : X"E0000" to X"E01FF"
-- download from www.pld.com.cn & www.fpga.com.cn
--- M68008 Address Decoder-- Address decod er for the m68008-- 0 asbar must be to enable any o utput-- csbar (0) : X "00000" to X "01FFF"-- csbar (1) : X "40000" to X "43FFF"-- csbar (2) : X "08000" to X "0AFFF"-- csbar (3) : X "E0000" to X "E01FF"-- download from www.pld. com.cn
- 2022-02-26 21:53:57下载
- 积分:1
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This procedure for the serial communication procedures, the use of Verilog langu...
此程序为串行通信程序,采用verilog语言编写的,经过仿真验证已经通过.-This procedure for the serial communication procedures, the use of Verilog language, after simulation has been adopted.
- 2022-04-22 21:51:37下载
- 积分:1
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8b10bEncoderDecoder-SourceCode (1)
说明: lattice的官方8b10b代码, 1012年版本,diamond3.5编译。(lattice 8b10b encoder decoder code)
- 2020-08-31 14:58:10下载
- 积分:1
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uart16550 ip core UART VHDL source code
uart16550 ip core 通用异步收发器vhdl源代码-uart16550 ip core UART VHDL source code
- 2022-07-11 01:23:07下载
- 积分:1
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Adder4
本设计是设计了一个4位全加器的内容,是由4个一位全加器串联而成的(The design is to design a full adder 4 content, is one of four full adder in series from the)
- 2009-05-11 19:50:58下载
- 积分:1
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两位独立数码管100进制计数器,每1秒计数一次。从0到99,到99后又回到0....
两位独立数码管100进制计数器,每1秒计数一次。从0到99,到99后又回到0.-Two independent 100-band digital tube counters, every time 1 seconds count. From 0 to 99, to 99 and then back to 0.
- 2022-03-11 18:06:22下载
- 积分:1