资料介绍
There are three classes that make up the definition for communication devices: the Communication Device Class,Communication Interface Class and the Data Interface Class. The Communication Device Class is a device level definition and is used by the host to properly identify a communication device that may present several different types
of interfaces. The Communication Interface Class defines a general-purpose mechanism that can be used to enable all
types of communication services on the Universal Serial Bus (USB). The Data Interface Class defines a generalpurpose
mechanism to enable bulk or isochronous transfer on the USB when the data does not meet the requirements
for any other class.
1.1 Scope
Given the broad nature of communication equipment, this specification does not attempt to dictate how all
communication equipment should use the USB. Rather, it defines an architecture that is capable of supporting any
communication device. The current release of the specification focuses on supporting connectivity to
telecommunication services (devices that have traditionally terminated an analog or digital telephone line), and medium
speed networking services (“Always Connected” LAN/WAN media types). The specification currently outlines the
following types of devices:
x Telecommunications devices: analog modems, ISDN terminal adapters, digital telephones, and analog
telephones
x Networking devices: ADSL modems, cable modems, 10BASE-T Ethernet adapters/hubs, and “Ethernet”
cross-over cables.
This specification does not attempt to redefine existing standards for connection and control of communication services. The Communication Class defines mechanisms for a device and host to identify which existing protocols to use. Where possible, existing data formats are used and the transport of these formats are merely enabled by the USB through the definition of the appropriate descriptors, interfaces, and requests. More specifically, this specification describes a framework of USB interfaces, data structures, and requests under which a wide variety of communication devices can be defined and implemented.
of interfaces. The Communication Interface Class defines a general-purpose mechanism that can be used to enable all
types of communication services on the Universal Serial Bus (USB). The Data Interface Class defines a generalpurpose
mechanism to enable bulk or isochronous transfer on the USB when the data does not meet the requirements
for any other class.
1.1 Scope
Given the broad nature of communication equipment, this specification does not attempt to dictate how all
communication equipment should use the USB. Rather, it defines an architecture that is capable of supporting any
communication device. The current release of the specification focuses on supporting connectivity to
telecommunication services (devices that have traditionally terminated an analog or digital telephone line), and medium
speed networking services (“Always Connected” LAN/WAN media types). The specification currently outlines the
following types of devices:
x Telecommunications devices: analog modems, ISDN terminal adapters, digital telephones, and analog
telephones
x Networking devices: ADSL modems, cable modems, 10BASE-T Ethernet adapters/hubs, and “Ethernet”
cross-over cables.
This specification does not attempt to redefine existing standards for connection and control of communication services. The Communication Class defines mechanisms for a device and host to identify which existing protocols to use. Where possible, existing data formats are used and the transport of these formats are merely enabled by the USB through the definition of the appropriate descriptors, interfaces, and requests. More specifically, this specification describes a framework of USB interfaces, data structures, and requests under which a wide variety of communication devices can be defined and implemented.
下载该资料的人也在下载
下载该资料的人还在阅读
更多 >
- USB Class的介绍 0次下载
- USB学习书籍之《圈圈教你玩转USB》 0次下载
- 常用于USB通信分析的USB协议分析工具下载 7次下载
- USB A/F 90°DIP(加盖弯脚)USB-012-BWS原理图 6次下载
- USB教程及应用实例 7次下载
- USB数据抓包软件程序下载 4次下载
- USB 3.0存储发展历史及展望综述 42次下载
- PWM调制的无滤波Class D音频功率放大器的设计 13次下载
- 基于MCP2221下的带GPIO的USB 2.0至I 2C/UART协议转换器 12次下载
- Universal Serial Bus(USB) Comm 30次下载
- Universal Serial Bus(USB) Devi 19次下载
- USB Cable & Connector Class Sp 241次下载
- USB Device Class Specification 18次下载
- USB Monitor Control Class Spec 10次下载
- Universal Serial Bus (USB) -De 8次下载
- USB-C和TYPE-C的区别 usb接口是充电口吗 712次阅读
- 基于MM32F0163D7P的USB Audio Class(UAC)音频设备 605次阅读
- USB基础学习:USB体系结构介绍 3698次阅读
- SystemVerilog中class的基本概念 1337次阅读
- SystemVerilog中class是什么意思 695次阅读
- VHF频段CISPR 25 CLASS 3基准超标整改的案例 4565次阅读
- USB23年发展史,多了什么变化? 8.2w次阅读
- 微雪电子USB集线器|USB HUB HAT简介 2578次阅读
- RER-USB130W-DM主要应用及规格介绍 1670次阅读
- 你以为你了解的USB就是你了解的USB吗? 8404次阅读
- USB 3.2接口的特征, USB 3.0和USB 2.0的区别 8.4w次阅读
- mini usb和micro usb的区别 15w次阅读
- micro usb接口定义图_micro usb接线图 73.5w次阅读
- 引领2017研发潮流的手机热点大预测:Power Class 2 4888次阅读
- USB 3.1助力USB Type-C高飞 2015次阅读
下载排行
本周
- 1ATmega8芯片中文手册
- 2.45 MB | 3次下载 | 1 积分
- 2电源监控电路UC1544/2544/3544数据表
- 2.07MB | 2次下载 | 免费
- 3开关式升压 3A 双节锂电充电管理E6483数据手册
- 0.26 MB | 2次下载 | 免费
- 4100V、300mA 恒定导通时间同步降压/Fly-Buck™ 稳压器LM5018数据表
- 2.02MB | 1次下载 | 免费
- 5BH6000蓄电池在线监测装置产品及系统介绍
- 1.57 MB | 1次下载 | 免费
- 6650V 6A沟槽和场阻IGBT JJT6N65ST数据表
- 1.89 MB | 1次下载 | 1 积分
- 7具有过压保护和阻断 FET控制功能的12V电子熔丝TPS25924x数据表
- 1.92MB | 1次下载 | 免费
- 8稳压5V、300mA高效电荷泵DC-DC转换器TPS6013x数据表
- 1.5MB | 1次下载 | 免费
本月
- 1电子元件基础知识介绍
- 8.76 MB | 73次下载 | 2 积分
- 2DC-DC电路(Buck)的设计与仿真
- 0.60 MB | 23次下载 | 2 积分
- 3UHD智能显示SoC VS680产品简介
- 0.46 MB | 11次下载 | 免费
- 4多功能电源管理 SOC IP5306数据手册
- 0.20 MB | 8次下载 | 免费
- 5ES9038PRO解码芯片的电路原理图介绍
- 0.25 MB | 8次下载 | 5 积分
- 6东芝BiCD集成电路硅单片TB67S109AFNAG数据手册
- 1.93 MB | 6次下载 | 免费
- 716A 输出电流,高可靠、高效率 同步降压转换器PCD3201产品手册
- 0.47 MB | 6次下载 | 免费
- 8电池管理系统(BMS)软硬件介绍
- 0.23 MB | 5次下载 | 2 积分
总榜
- 1matlab软件下载入口
- 未知 | 935085次下载 | 免费
- 2开源硬件-PMP21529.1-4 开关降压/升压双向直流/直流转换器 PCB layout 设计
- 1.48MB | 420048次下载 | 免费
- 3Altium DXP2002下载入口
- 未知 | 233067次下载 | 免费
- 4电路仿真软件multisim 10.0免费下载
- 340992 | 191315次下载 | 免费
- 5十天学会AVR单片机与C语言视频教程 下载
- 158M | 183315次下载 | 免费
- 6labview8.5下载
- 未知 | 81567次下载 | 免费
- 7Keil工具MDK-Arm免费下载
- 0.02 MB | 73786次下载 | 免费
- 8NI LabVIEW中实现3D视觉的工具和技术
- 未知 | 70088次下载 | 免费
评论
查看更多