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USB Type-C Spec

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  • 日期: 2018-08-22
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标签: USB

USB是英文Universal Serial BUS的缩写,中文含义是“通用串行总线”。它不是一种新的总线标准,而是应用在PC领域的接口技术。USB是在1994年底由英特尔、康柏、IBM、Microsoft等多家公司联合提出的。不过直到近期,它才得到广泛地应用。从1994年11月11日发表了USB V0.7版本以后,USB版本经历了多年的发展,到现在已经发展为2.0版本,成为目前电脑中的标准扩展接口。目前主板中主要是采用USB1.1和USB2.0,各USB版本间能很好的兼容。USB用一个4针插头作为标准插头,采用菊花链形式可以把所有的外设连接起来,最多可以连接127个外部设备,并且不会损失带宽。USB需要主机硬件、操作系统和外设三个方面的支持才能工作。目前的主板一般都采用支持USB功能的控制芯片组,主板上也安装有USB接口插座,而且除了背板的插座之外,主板上还预留有USB插针,可以通过连线接到机箱前面作为前置USB接口以方便使用(注意,在接线时要仔细阅读主板说明书并按图连接,千万不可接错而使设备损坏)。而且USB接口还可以通过专门的USB连机线实现双机互连,并可以通过Hub扩展出更多的接口。USB具有传输速度快(USB1.1是12Mbps,USB2.0是480Mbps, USB3.0是5 Gbps),使用方便,支持热插拔,连接灵活,独立供电等优点,可以连接鼠标、键盘、打印机、扫描仪、摄像头、闪存盘、MP3机、手机、数码相机、移动硬盘、外置光软驱、USB网卡、ADSL Modem、Cable Modem等,几乎所有的外部设备。USB是一个外部总线标准,用于规范电脑与外部设备的连接和通讯。USB接口支持设备的即插即用和热插拔功能。USB接口可用于连接多达127种外设,如鼠标、调制解调器和键盘等。USB自从1996年推出后,已成功替代串口和并口,并成为当今个人电脑和大量智能设备的必配的接口之一。

Type-C

2015年CES大展上,Intel联合USB实施者论坛向公众展示了USB 3.1的威力,具体搭配的接口是USB Type C,能够正反随便插,大小也与micro-USB相差无几。理论上,USB 3.1 Type C的传输速度能够达到10Gbps。Type-C是USB接口的一种连接介面,不分正反两面均可插入,大小约为8.3mm×2.5mm,和其他介面一样支持USB标准的充电、数据传输、显 示输出等功能。Type-C由USB Implementers Forum制定,在2014年获得苹果、谷歌、英特尔、微软等厂商支持后开始普及。

USB Type-C Specification Release 1.3

文档内容节选

Release 13 July 14 2017 USB TypeC Cable and Connector Specification 1 Universal Serial Bus TypeC Cable and Connector Specification Release 13 July 14 2017 Copyright 2017 USB 30 Promoter Group All rights reserved Release 13 July 14 2017 2 USB TypeC Cable and Connector Specification Copyright 20142017 USB 30 Promoter Group Apple Inc HewlettPackard Inc Intel Corporation Microsoft Corporation Renesas STMicroelectronics and Texas Instruments All rights......

Release 1.3 July 14, 2017 USB Type-C Cable and Connector Specification - 1 - Universal Serial Bus Type-C Cable and Connector Specification Release 1.3 July 14, 2017 Copyright © 2017 USB 3.0 Promoter Group. All rights reserved. Release 1.3 July 14, 2017 - 2 - USB Type-C Cable and Connector Specification Copyright © 2014-2017, USB 3.0 Promoter Group: Apple Inc., Hewlett-Packard Inc., Intel Corporation, Microsoft Corporation, Renesas, STMicroelectronics, and Texas Instruments All rights reserved. NOTE: Adopters may only use the USB Type-C™ cable and connector to implement USB or third party functionality as expressly described in this Specification; all other uses are prohibited. LIMITED COPYRIGHT LICENSE: The USB 3.0 Promoters grant a conditional copyright license under the copyrights embodied in the USB Type-C Cable and Connector Specification to use and reproduce the Specification for the sole purpose of, and solely to the extent necessary for, evaluating whether to implement the Specification in products that would comply with the specification. Without limiting the foregoing, use of the Specification for the purpose of filing or modifying any patent application to target the Specification or USB compliant products is not authorized. Except for this express copyright license, no other rights or licenses are granted, including without limitation any patent licenses. In order to obtain any additional intellectual property licenses or licensing commitments associated with the Specification a party must execute the USB 3.0 Adopters Agreement. NOTE: By using the Specification, you accept these license terms on your own behalf and, in the case where you are doing this as an employee, on behalf of your employer. INTELLECTUAL PROPERTY DISCLAIMER THIS SPECIFICATION IS PROVIDED TO YOU “AS IS” WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NON-INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE. THE AUTHORS OF THIS SPECIFICATION DISCLAIM ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PROPRIETARY RIGHTS, RELATING TO USE OR IMPLEMENTATION OF INFORMATION IN THIS SPECIFICATION. THE PROVISION OF THIS SPECIFICATION TO YOU DOES NOT PROVIDE YOU WITH ANY LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS. All implementation examples and reference designs contained within this Specification are included as part of the limited patent license for those companies that execute the USB 3.0 Adopters Agreement. USB Type-C™ and USB-C™ are trademarks of the Universal Serial Bus Implementers Forum (USB-IF). All product names are trademarks, registered trademarks, or service marks of their respective owners. Copyright © 2017 USB 3.0 Promoter Group. All rights reserved. Release 1.3 July 14, 2017 - 3 - CONTENTS USB Type-C Cable and Connector Specification Specification Work Group Chairs / Specification Editors ................................................... 11 Specification Work Group Contributors .................................................................................. 11 Pre-Release Draft Industry Reviewing Companies That Provided Feedback ................ 14 Revision History ............................................................................................................................. 14 1 Introduction ............................................................................................................................ 15 Purpose ......................................................................................................................... 15 1.1 1.2 Scope ............................................................................................................................. 15 1.3 Related Documents .................................................................................................... 16 1.4 Conventions ................................................................................................................. 16 1.4.1 Precedence .................................................................................................... 16 1.4.2 Keywords ...................................................................................................... 16 1.4.3 Numbering .................................................................................................... 17 1.5 Terms and Abbreviations ......................................................................................... 17 2 Overview .................................................................................................................................. 21 2.1 Introduction ................................................................................................................ 21 2.2 USB Type-C Receptacles, Plugs and Cables ......................................................... 22 Configuration Process ............................................................................................... 23 2.3 Source-to-Sink Attach/Detach Detection .............................................. 24 2.3.1 2.3.2 Plug Orientation/Cable Twist Detection ............................................... 24 2.3.3 Initial Power (Source-to-Sink) Detection and Establishing the Data (Host-to-Device) Relationship ................................................................. 24 2.3.4 USB Type-C VBUS Current Detection and Usage .................................. 25 2.3.5 USB PD Communication ............................................................................. 25 Functional Extensions ................................................................................ 26 2.3.6 2.4 VBUS ................................................................................................................................ 26 2.5 VCONN ............................................................................................................................. 27 2.6 Hubs ............................................................................................................................... 27 3 Mechanical ............................................................................................................................... 28 3.1.1 3.1.2 3.1.3 3.1.4 3.1 Overview ...................................................................................................................... 28 Compliant Connectors................................................................................ 28 Compliant Cable Assemblies .................................................................... 28 Compliant USB Type-C to Legacy Cable Assemblies .......................... 28 Compliant USB Type-C to Legacy Adapter Assemblies ..................... 29 3.2 USB Type-C Connector Mating Interfaces ............................................................ 29 3.2.1 Interface Definition .................................................................................... 29 3.2.2 Reference Designs ....................................................................................... 52 3.2.3 Pin Assignments and Descriptions ......................................................... 59 Cable Construction and Wire Assignments ......................................................... 60 3.3.1 Cable Construction (Informative) ........................................................... 60 3.3.2 Wire Assignments ....................................................................................... 62 3.3.3 Wire Gauges and Cable Diameters (Informative) ............................... 63 3.3 Copyright © 2017 USB 3.0 Promoter Group. All rights reserved. Release 1.3 July 14, 2017 - 4 - USB Type-C Cable and Connector Specification 3.6 3.7 3.5 3.4 Standard USB Type-C Cable Assemblies .............................................................. 65 3.4.1 USB Full-Featured Type-C Cable Assembly .......................................... 65 3.4.2 USB 2.0 Type-C Cable Assembly .............................................................. 66 3.4.3 USB Type-C Captive Cable Assemblies .................................................. 67 Legacy Cable Assemblies .......................................................................................... 67 3.5.1 USB Type-C to USB 3.1 Standard-A Cable Assembly .......................... 68 3.5.2 USB Type-C to USB 2.0 Standard-A Cable Assembly .......................... 69 3.5.3 USB Type-C to USB 3.1 Standard-B Cable Assembly .......................... 70 3.5.4 USB Type-C to USB 2.0 Standard-B Cable Assembly .......................... 71 3.5.5 USB Type-C to USB 2.0 Mini-B Cable Assembly ................................... 72 3.5.6 USB Type-C to USB 3.1 Micro-B Cable Assembly ................................. 73 3.5.7 USB Type-C to USB 2.0 Micro-B Cable Assembly ................................. 75 Legacy Adapter Assemblies ..................................................................................... 76 3.6.1 USB Type-C to USB 3.1 Standard-A Receptacle Adapter Assembly 76 3.6.2 USB Type-C to USB 2.0 Micro-B Receptacle Adapter Assembly ...... 78 Electrical Characteristics ......................................................................................... 79 3.7.1 Raw Cable (Informative) ........................................................................... 79 3.7.2 USB Type-C to Type-C Passive Cable Assemblies (Normative) ....... 80 3.7.3 Mated Connector (Informative) .............................................................. 93 3.7.4 USB Type-C to Legacy Cable Assemblies (Normative) ...................... 97 3.7.5 USB Type-C to USB Legacy Adapter Assemblies (Normative) ....... 101 3.7.6 Shielding Effectiveness Requirements (Normative) ........................ 103 3.7.7 DC Electrical Requirements (Normative) ........................................... 106 3.8 Mechanical and Environmental Requirements (Normative) ........................ 109 3.8.1 Mechanical Requirements ....................................................................... 109 Environmental Requirements ................................................................ 115 3.8.2 3.9 Docking Applications (Informative) ................................................................... 116 3.10 Implementation Notes and Design Guides ........................................................ 117 3.10.1 EMC Management (Informative) ........................................................... 117 3.10.2 Stacked and Side-by-Side Connector Physical Spacing (Informative) .............................................................................................. 120 3.10.3 Cable Mating Considerations (Informative) ...................................... 120 Functional .............................................................................................................................. 122 4 4.1 4.2 4.3 4.4 Signal Summary ........................................................................................................ 122 Signal Pin Descriptions ........................................................................................... 122 4.2.1 SuperSpeed USB Pins ............................................................................... 122 4.2.2 USB 2.0 Pins ................................................................................................ 123 4.2.3 Auxiliary Signal Pins ................................................................................ 123 Power and Ground Pins ........................................................................... 123 4.2.4 4.2.5 Configuration Pins .................................................................................... 123 Sideband Use (SBU) ................................................................................................. 123 Power and Ground ................................................................................................... 123 4.4.1 IR Drop ......................................................................................................... 123 4.4.2 VBUS ............................................................................................................... 124 Copyright © 2017 USB 3.0 Promoter Group. All rights reserved. Release 1.3 July 14, 2017 - 5 - USB Type-C Cable and Connector Specification 4.5 4.4.3 VCONN ............................................................................................................ 126 Configuration Channel (CC) ................................................................................... 130 4.5.1 Architectural Overview ........................................................................... 130 4.5.2 CC Functional and Behavioral Requirements .................................... 144 4.5.3 USB Port Interoperability Behavior ..................................................... 170 Power .......................................................................................................................... 182 4.6.1 Power Requirements during USB Suspend ........................................ 183 4.6.2 VBUS Power Provided Over a USB Type-C Cable ............................... 184 4.7 USB Hubs .................................................................................................................... 187 Power Sourcing and Charging ............................................................................... 188 4.8 4.8.1 DFP as a Power Source ............................................................................ 188 4.8.2 Non-USB Charging Methods ................................................................... 191 Sinking Host ............................................................................................... 191 4.8.3 4.8.4 Sourcing Device ......................................................................................... 191 4.8.5 Charging a System with a Dead Battery .............................................. 191 4.8.6 USB Type-C Multi-Port Chargers ........................................................... 192 Electronically Marked Cables ............................................................................... 194 4.9.1 Parameter Values ...................................................................................... 195 4.9.2 Active Cables .............................................................................................. 196 4.6 4.9 4.10 VCONN-Powered Accessories (VPAs) and VCONN-Powered USB Devices (VPDs) ......................................................................................................................... 196 4.10.1 VCONN-Powered Accessories (VPAs) .................................................... 196 4.10.2 VCONN-Powered USB Devices (VPDs) ................................................... 196 4.11 Parameter Values ..................................................................................................... 197 4.11.1 Termination Parameters ......................................................................... 197 4.11.2 Timing Parameters ................................................................................... 199 4.11.3 Voltage Parameters .................................................................................. 201 Functional Extensions ........................................................................................................ 203 5.1 Alternate Modes ....................................................................................................... 203 5.1.1 Alternate Mode Architecture ................................................................. 203 5.1.2 Alternate Mode Requirements ............................................................... 203 5.1.3 Parameter Values ...................................................................................... 207 Example Alternate Mode – USB DisplayPort™ Dock ........................ 208 5.1.4 5.2 Managed Active Cables ........................................................................................... 210 5 5.2.1 Requirements for Managed Active Cables that respond to SOP’ and SOP” .............................................................................................................. 210 5.2.2 Cable Message Structure ......................................................................... 211 5.2.3 Modal Cable Management ....................................................................... 211 A Audio Adapter Accessory Mode ....................................................................................... 213 A.1 Overview .................................................................................................................... 213 A.2 Detail ........................................................................................................................... 213 A.3 Electrical Requirements ......................................................................................... 214 A.4 Example Implementations ..................................................................................... 216 Copyright © 2017 USB 3.0 Promoter Group. All rights reserved.
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评论

苏文锋
好东西,要花点时间好好看看好,全是英文,很多看不懂啊!
2018-10-16 13:59:49回复
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