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Protocol

Protocol为进行网络中的数据交换而建立的规则、标准或约定。用于不同系统中实体间的通信。两个实体要想通信,必须有“同一种语言”,而且,对于通信内容,怎样通信和何时通信,都必须遵守一定的规定,这些规定就是协议。亦可简单地定义为:控制两实体间数据交换的一套规则。在电子通讯连接中,各个不同的层次都有自己的协议。例如,在硬件设备层次和应用程序层次的数据交换都有自己的协议。在开放式系统互连(OSI)标准模式中,每个层都有一到两种协议,发生通讯的两个终端都必须能识别和遵守协议。协议通常以工业或国际标准的形式被描述。
  • 一个简单的SPI IP核

    一个简单的SPI IP核,SPI Core Specifications 可以从说明文档中找到! The simple Serial Peripheral Interface core is an enhanced version of the Serial Peripheral Interface found on Motorola s M68HC11 family of CPUs. The Serial Peripheral Interface is a serial, synchronous communication Protocol that requires a minimum of 3 wires. FEATURES: · Compatible with Motorola’s SPI specifications · Enhanced M68HC11 Serial Peripheral Interface · 4 entries deep read FIFO · 4 entries deep write FIFO · Interrupt generation after 1, 2, 3, or 4 transferred bytes · 8 bit WISHBONE RevB.3 Classic interface · Operates from a wide range of input clock frequencies · Static synchronous design · Fully synthesizable

    标签:

    上传时间: 2015-09-17

    上传用户:TRIFCT

  • This document describes the uIP TCP/IP stack. The uIP TCP/IP stack is an extremely small implementat

    This document describes the uIP TCP/IP stack. The uIP TCP/IP stack is an extremely small implementation of the TCP/IP Protocol suite intended for embedded systems running low-end 8 or 16-bit microcon-trollers. The code size and RAM requirements of uIP is an order of magnitude smaller than other generic TCP/IP stacks today.

    标签: stack implementat TCP describes

    上传时间: 2015-09-18

    上传用户:zsjinju

  • THIS CODE IS FOR EXAMPLE PURPOSES ONLY, USE AT YOUR OWN RISK, NO WARRANTY IS ASSUMED OR IMPLIED

    THIS CODE IS FOR EXAMPLE PURPOSES ONLY, USE AT YOUR OWN RISK, NO WARRANTY IS ASSUMED OR IMPLIED The intension of this code is to provide an example of attaching to the MUX layer with a custom ethernet Protocol. Though the NPT code is provided for handling alternate frames, it has not been tested.

    标签: PURPOSES WARRANTY ASSUMED EXAMPLE

    上传时间: 2015-09-21

    上传用户:qq521

  • Dropbear is an SSH 2 server, designed to be usable in small memory environments. It supports:

    Dropbear is an SSH 2 server, designed to be usable in small memory environments. It supports: * Main features of SSH 2 Protocol * Implements X11 forwarding, and authentication-agent forwarding for OpenSSH clients * Compatible with OpenSSH ~/.ssh/authorized_keys public key authentication

    标签: environments Dropbear designed supports

    上传时间: 2014-01-16

    上传用户:skhlm

  • Identification cards — Contactless integrated circuit(s) cards — Proximity cards — Part 4: Transmis

    Identification cards — Contactless integrated circuit(s) cards — Proximity cards — Part 4: Transmission Protocol

    标签: cards Identification Contactless integrated

    上传时间: 2013-12-16

    上传用户:gdgzhym

  • 本文件描述了一个基于串口实现文件传输的协议eXmodem

    本文件描述了一个基于串口实现文件传输的协议eXmodem,该协议基于标准Xmodem File Transfer Protocol,是一个独立标准,完全功能,全新的文件传输协议。 1)该协议除实现Xmodem File Transfer基本功能,即已实现了在两个设备相互之间,通过串口把一个设备内文件传输至另一个设备内;其增强功能所列参考如下: a)两个设备相互之间传输文件能够以一致的文件目录存放; b)两个设备相互之间可以传输任意大小的文件,而Xmodem File Transfer只能传送128 *n字节大小的文件; c)具备避免一个文件在两个设备相互之间重复传输的功能,提高了文件传输的效率。

    标签: eXmodem 文件描述 串口实现 文件传输

    上传时间: 2015-09-30

    上传用户:LouieWu

  • Many programs today suffer from the fact that their users have to connect using IP addresses. This i

    Many programs today suffer from the fact that their users have to connect using IP addresses. This is impossible for dialup users, whose IPs change all the time, and painful for LAN users who don t know their IP addresses or whose addresses also change. In addition, many collaborative programs could benefit from offering friends lists, showing friends as online or offline, providing status information. This kind of functionality is hard to provide, requiring a dedicated Internet database and a new client - client Protocol. But it is offered today through a system called AwareNet, which is offered free of charge and royalty

    标签: addresses programs connect suffer

    上传时间: 2013-12-05

    上传用户:CHENKAI

  • This book describes the following communications applications: Mail, Message Handler( MH), Transmiss

    This book describes the following communications applications: Mail, Message Handler( MH), Transmission ControlProtocol/ Internet Protocol(TCP/ IP), Basic Networking Utilities( BNU), and Asynchronous Terminal Emulation( ATE). It provides overviews, concepts, and procedures on receiving and sending mail and messages, transferring files( ftp command), printing files from and to a remote system, running commands on other systems, communicating between local and remote systems, and customizing the communications environment.

    标签: communications applications Transmiss describes

    上传时间: 2013-12-18

    上传用户:woshini123456

  • These two classes show an extremely simple example of java.net socket programming. They implement th

    These two classes show an extremely simple example of java.net socket programming. They implement the Unix daytime Protocol, an extremely simple Protocol that consists entirely of the server sending its current local time and date to the client as an ASCII string. The server, to keep it very simple, does not use multiple threads. This code requires JDK 1.1 or later, but can easily be adapted to JDK 1.0.

    标签: programming extremely implement classes

    上传时间: 2015-11-16

    上传用户:jennyzai

  • This C++ code example provides a method for transferring objects or chunks of data from one device

    This C++ code example provides a method for transferring objects or chunks of data from one device to another via the Bluetooth OBEX Protocol. These chunks are typically files or other blocks of binary data. This example demonstrates how to run OBEX on top of the Bluetooth RFCOMM Protocol, but OBEX can also be used with other transport media, such as IrDA and USB.

    标签: transferring provides example objects

    上传时间: 2015-12-02

    上传用户:13160677563