Release 1.3 - 5 - USB Type-C Cable and
July 14, 2017 Connector Specification
Copyright © 2017 USB 3.0 Promoter Group. All rights reserved.
4.4.3 VCONN ............................................................................................................ 126
4.5 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
4.6 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
4.8 Power Sourcing and Charging ............................................................................... 188
4.8.1 DFP as a Power Source ............................................................................ 188
4.8.2 Non-USB Charging Methods ................................................................... 191
4.8.3 Sinking Host ............................................................................................... 191
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
4.9 Electronically Marked Cables ............................................................................... 194
4.9.1 Parameter Values ...................................................................................... 195
4.9.2 Active Cables .............................................................................................. 196
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
5 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
5.1.4 Example Alternate Mode – USB DisplayPort™ Dock ........................ 208
5.2 Managed Active Cables ........................................................................................... 210
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
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