PCI-Express(peripheral component interconnect express) 是一种高速串行计算机扩展总线标准，它原来的名称为 “3GIO”，是由英特尔在 2001 年提出的，旨在替代旧的 PCI，PCI-X 和 AGP 总线标准。

最新版本的uml2.0 高级规约，包含九种图形，最重要的描述全面，详细。

USB的SPEC都是可以在USB.org下载到的，链接：https://usb.org/documents

HDMI HDCP加密解密开发协议文档

Universal Serial Bus Type-C Cable and Connector Specification Release 1.3 July 14, 2017 CONTENTS 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 1.1 Purpose ......................................................................................................................... 15 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 2.3 Configuration Process ............................................................................................... 23 2.3.1 Source-to-Sink Attach/Detach Detection .............................................. 24 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 2.3.6 Functional Extensions ................................................................................ 26 2.4 VBUS ............................................................................................................................... 26 2.5 VCONN ............................................................................................................................. 27 2.6 Hubs ............................................................................................................................... 27 3 Mechanical ............................................................................................................................... 28 3.1 Overview ...................................................................................................................... 28 3.1.1 Compliant Connectors................................................................................ 28 3.1.2 Compliant Cable Assemblies .................................................................... 28 3.1.3 Compliant USB Type-C to Legacy Cable Assemblies .......................... 28 3.1.4 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 3.3 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 3.4 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 3.5 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 3.6 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 3.7 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 3.8.2 Environmental Requirements ................................................................ 115 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 4 Functional .............................................................................................................................. 122 4.1 Signal Summary ........................................................................................................ 122 4.2 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 4.2.4 Power and Ground Pins ........................................................................... 123 4.2.5 Configuration Pins .................................................................................... 123 4.3 Sideband Use (SBU) ................................................................................................. 123 4.4 Power and Ground ................................................................................................... 123 4.4.1 IR Drop ......................................................................................................... 123 4.4.2 VBUS ............................................................................................................... 124 ... ...

MIPI D-PHY specification

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json-graph-specification, 在JSON中，表示图结构( 节点/边)的一 json-graph-specificationJSON中表示图形结构的一种。链接持续集成 Gitter聊天 设计原则使用反映值的语义类型的有意义的属性名。属性名称不应过长。属性名为 array 时，属性名应该

Wi-Fi_Display_Technical_Specification_v2.1_0.pdf Download from https://www.wi-fi.org/downloads-registered-guest/Wi-Fi_Display_Technical_Specification_v2.1_0.pdf/34726

This document is the specification for the Wi-Fi Alliance® Wi-Fi Multimedia (WMM®), a quality of 9 service (QoS) solution for Wi-Fi® networks. Updates to the original specification have added 10 feature sets for WMM-Power Save and WMM-Admission Control.