EN IEC 62680-1-3:2022

Universal serial bus interfaces for data and power - Part 1-3: Common components - USB Type-C® cable and connector specification

IEC 62680-1-3:2022 defines the USB Type-C® receptacles, plug and cables. The USB Type-C Cable and Connector Specification is guided by the following principles: - Enable new and exciting host and device form-factors where size, industrial design and style are important parameters - Work seamlessly with existing USB host and device silicon solutions - Enhance ease of use for connecting USB devices with a focus on minimizing user confusion for plug and cable orientation The USB Type-C Cable and Connector Specification defines a new receptacle, plug, cable and detection mechanisms that are compatible with existing USB interface electrical and functional specifications. This specification covers the following aspects that are needed to produce and use this new USB cable/connector solution in newer platforms and devices, and that interoperate with existing platforms and devices: - USB Type-C receptacles, including electro-mechanical definition and performance requirements - USB Type-C plugs and cable assemblies, including electro-mechanical definition and performance requirements - USB Type-C to legacy cable assemblies and adapters - USB Type-C-based device detection and interface configuration, including support for legacy connections - USB Power Delivery optimized for the USB Type-C connector The USB Type-C Cable and Connector Specification defines a standardized mechanism that supports Alternate Modes, such as repurposing the connector for docking-specific applications. IEC 62680-1-3:2022 cancels and replaces the fourth edition published in 2021 and constitutes a technical revision. This standard is the USB-IF publication Universal Serial Bus Type-C Cable and Connector Specification Revision 2.0. New release primarily for enabling Extended Power Range (EPR) and defining EPR cables aligning with USB Power Delivery Specification R3.1 V1.0. Also includes incorporation of all approved ECNs as the revision date plus editorial clean-up.

Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 1-3: Gemeinsame Bauteile - Festlegung für USB-Typ-C®-Kabel und -Steckverbinder

Interfaces de bus universel en série pour les données et l'alimentation électrique - Partie 1-3: Composants communs - Spécification des câbles et connecteurs USB Type-C®

L'IEC 62680-1-3:2022 définit les fiches et embases, ainsi que les câbles USB Type-C®. La spécification des câbles et connecteurs USB Type-C est guidée par les principes suivants: - Favoriser des critères de forme d'hôtes et de dispositifs innovants et agréables, où la taille, la conception industrielle et le style constituent des paramètres importants - Interagir en toute fluidité avec les solutions d'hôtes et de dispositifs USB silicium actuelles - Améliorer la facilité d'utilisation pour la connexion des dispositifs USB, en réduisant le plus possible le risque de confusion lors de l'insertion des connecteurs et des câbles La spécification des câbles et connecteurs USB Type-C définit de nouvelles techniques de connexion et de détection des ports et câbles USB, qui sont compatibles avec les spécifications électriques et fonctionnelles d'interface USB existantes. La présente spécification couvre les aspects suivants, qui sont nécessaires à la production et à l'utilisation de cette nouvelle solution de câble/connecteur USB pour les plateformes et dispositifs récents, et qui interagissent avec les plateformes et dispositifs actuels: - Les embases USB Type-C, notamment la description électromécanique et les exigences de performance - Les fiches et les ensembles câble-connecteurs USB Type-C, notamment la description électromécanique et les exigences de performance - Les ensembles câble-connecteurs et les adaptateurs USB Type-C vers existant - La configuration d'interface et la détection des dispositifs USB Type-C, notamment la prise en charge des connexions existantes - L'alimentation électrique par port USB optimisée pour les connecteurs USB Type-C La spécification des câbles et connecteurs USB Type-C définit une technique normalisée qui prend en charge les modes alternatifs, comme la reconversion du connecteur pour un usage spécifiquement lié au branchement. L'IEC 62680-1-3:2022 annule et remplace la quatrième édition publiée en 2021 et constitue une révision technique. La présente norme est la publication de l'USB-IF relative à la Spécification des câbles et connecteurs Universal Serial Bus de Type-C, révision 2.0. Nouvelle version essentiellement destinée à l'application de Extended Power Range (EPR) et définissant les câbles EPR conjointement avec la Spécification R3.1 V1.0 USB Power Delivery. Comprend également l'incorporation de l'ensemble des ECN approuvés à la date de révision, ainsi que les corrections rédactionnelles.

Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 1-3. del: Skupne komponente - Specifikacija za kable in priključke univerzalnega serijskega vodila tipa C® (IEC 62680-1-3:2022)

IEC 62680-1-3:2022 določa vtičnice, priključke in kable univerzalnega serijskega vodila tipa C®. Specifikacija za kable in priključke univerzalnega serijskega vodila tipa C® temelji na naslednjih načelih:
– Omogoča naj nove in zanimive oblike gostiteljev in naprav, kjer so velikost, industrijsko oblikovanje in slog pomembni parametri
– Brez težav naj deluje z obstoječimi rešitvami USB za gostitelje in naprave
– Izboljša naj enostavnost uporabe za povezovanje naprav USB s poudarkom na zmanjšanju negotovosti uporabnikov glede usmeritve vtiča in kabla
Specifikacija za kable in priključke univerzalnega serijskega vodila tipa C opredeljuje novo vtičnico, vtič, kabel in mehanizme za zaznavanje, ki so združljivi z obstoječimi električnimi in funkcionalnimi specifikacijami vmesnika USB. Ta specifikacija zajema naslednje vidike, ki so potrebni za izdelavo in uporabo te nove rešitve kabla/priključka USB v novejših platformah in napravah ter ki delujejo z obstoječimi platformami in napravami:
– vtičnicami USB tipa C, vključno z elektromehanskimi definicijami in zahtevami glede zmogljivosti
– vtiči in sklopi kablov USB tipa C, vključno z elektromehanskimi definicijami in zahtevami glede zmogljivosti
– USB tipa C za starejše sklope kablov in adapterje
– zaznavanje naprav in konfiguracija vmesnika na osnovi USB tipa C, vključno s podporo za starejše povezave
– napajanje USB, optimizirano za priključek USB tipa C
Specifikacija za kable in priključke univerzalnega serijskega vodila tipa C opredeljuje standardiziran mehanizem, ki podpira nadomestne načine, kot je uporaba priključka za aplikacije prek specifične priklopne postaje. IEC 62680-1-3:2022 razveljavlja in nadomešča četrto izdajo, objavljeno leta 2021, in predstavlja tehnično popravljeno izdajo. Ta standard je publikacija USB-IF Specifikacija za kable in priključke univerzalnega serijskega vodila, revizija 2.0. Nova izdaja obravnava predvsem omogočanje tehnologije EPR (Extended Power Range) in opredelitev kablov EPR, ki so v skladu s specifikacijo za napajanje USB R3.1 V1.0. Vključuje tudi vse odobrene sisteme ECN na datum revizije in uredniške popravke.

General Information

• Status: Published
• Publication Date: 13-Oct-2022
• ICS: 33.120.20 - Wires and symmetrical cables
• ICS: 33.120.30 - RF connectors
• ICS: 35.200 - Interface and interconnection equipment
• Technical Committee: CLC/TC 100X - Audio, video and multimedia systems and equipment and related sub-systems
• Drafting Committee: IEC/TC 100 - IEC_TC_100
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 14-Oct-2022
• Due Date: 31-Oct-2022
• Completion Date: 14-Oct-2022
• Ref Project: SIST EN IEC 62680-1-3:2023 - Universal serial bus interfaces for data and power - Part 1-3: Common components - USB Type-C(r) cable and connector specification (IEC 62680-1-3:2022)

Relations

• Replaces: EN IEC 62680-1-3:2021 - Universal serial bus interfaces for data and power - Part 1-3: Common components - USB Type-C® Cable and Connector Specification
• Effective Date: 18-Oct-2022
• Replaced By: EN IEC 62680-1-3:2025 - Universal serial bus interfaces for data and power - Part 1-3: Common components - USB Type-C® cable and connector specification
• Effective Date: 20-Feb-2024

Overview

EN IEC 62680-1-3:2022 (adopted by CLC) is the international standard that defines the USB Type‑C® cable and connector specification. Based on the USB‑IF Type‑C specification (Universal Serial Bus Type‑C Cable and Connector Specification Revision 2.0), this edition is a technical revision that cancels and replaces the 2021 version. The 2022 release primarily enables Extended Power Range (EPR) and defines EPR cable requirements aligned with USB Power Delivery (PD) Specification R3.1 V1.0, while incorporating approved engineering change notices (ECNs) and editorial clean‑up.

Key topics and technical requirements

The standard covers the electro‑mechanical and functional definition of the USB Type‑C ecosystem and includes requirements needed to design, produce and use Type‑C solutions:

• USB Type‑C receptacles, plugs and cable assemblies
  • Electro‑mechanical definitions and performance requirements for connectors and cables.
• USB Type‑C to legacy cable assemblies and adapters
  • Requirements for interoperability with previous USB connector types and legacy devices.
• Device detection and interface configuration
  • Standardized detection mechanisms for attach/detach, plug orientation, cable twist and source/sink relationships.
• Power management
  • USB Power Delivery optimized for the Type‑C connector, including support for EPR (Extended Power Range).
• Functional extensions and Alternate Modes
  • Mechanisms to repurpose the Type‑C connector for docking or other alternate functions (e.g., video or vendor‑defined modes).
• Interoperability and backward compatibility
  • Rules to ensure seamless operation with existing USB silicon and platforms.
• Incorporation of USB‑IF published requirements and ECNs to maintain current compliance and performance expectations.

Applications and who uses it

EN IEC 62680-1-3:2022 is used by a wide range of stakeholders involved in USB Type‑C ecosystems:

• Hardware designers and OEMs - laptop, smartphone, tablet and dock manufacturers designing Type‑C ports and power systems.
• Connector and cable manufacturers - to meet electro‑mechanical and performance requirements including EPR cable design.
• Testing and certification labs - to validate compliance, interoperability and safety.
• System integrators and accessory makers - for adapters, hubs and legacy compatibility solutions.
• Compliance and regulatory teams - to align products with international standards and USB‑IF guidance.

Related standards

• IEC/EN 62680 series (other parts covering data and power interfaces)
• USB Power Delivery Specification R3.1 V1.0 (for EPR and PD behavior)
• USB‑IF published Type‑C specification (source publication for this IEC/EN adoption)

This standard is essential for anyone implementing or certifying USB Type‑C hardware, ensuring safe, interoperable and future‑ready connectors, cables and power delivery solutions.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2023
Nadomešča:
SIST EN IEC 62680-1-3:2021
Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 1-3.
del: Skupne komponente - Specifikacija za kable in priključke univerzalnega
serijskega vodila tipa C® (IEC 62680-1-3:2022)
Universal serial bus interfaces for data and power - Part 1-3: Common components -
USB Type-C(r) cable and connector specification (IEC 62680-1-3:2022)
Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 1-3:
Gemeinsame Bauteile - Festlegung für USB-Typ-C(r)-Kabel und -Steckverbinder (IEC
62680-1-3:2022)
Interfaces de bus universel en série pour les données et l'alimentation électrique - Partie
1-3: Composants communs - Spécification des câbles et connecteurs USB Type-C(r)
(IEC 62680-1-3:2022)
Ta slovenski standard je istoveten z: EN IEC 62680-1-3:2022
ICS:
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62680-1-3

NORME EUROPÉENNE
EUROPÄISCHE NORM October 2022
ICS 33.120.20; 33.120.30; 35.200 Supersedes EN IEC 62680-1-3:2021
English Version
Universal serial bus interfaces for data and power - Part 1-3:
Common components - USB Type-C(r) cable and connector
specification
(IEC 62680-1-3:2022)
Interfaces de bus universel en série pour les données et Schnittstellen des Universellen Seriellen Busses für Daten
l'alimentation électrique - Partie 1-3: Composants communs und Energie - Teil 1-3: Gemeinsame Bauteile - Festlegung
- Spécification des câbles et connecteurs USB Type-C(r) für USB-Typ-C(r)-Kabel und -Steckverbinder
(IEC 62680-1-3:2022) (IEC 62680-1-3:2022)
This European Standard was approved by CENELEC on 2022-10-10. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62680-1-3:2022 E

European foreword
The text of document 100/3715/CDV, future edition 5 of IEC 62680-1-3, prepared by IEC/TC 100
"Audio, video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel
vote and approved by CENELEC as EN IEC 62680-1-3:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-07-10
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-10-10
document have to be withdrawn
This document supersedes EN IEC 62680-1-3:2021 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62680-1-3:2022 was approved by CENELEC as a
European Standard without any modification.

IEC 62680-1-3 ®
Edition 5.0 2022-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Universal serial bus interfaces for data and power –
Part 1-3: Common components – USB Type-C® Cable and Connector
Specification
Interfaces de bus universel en série pour les données et l'alimentation
électrique –
Partie 1-3: Composants communs – Spécification des câbles et connecteurs
USB Type-C®
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.120.20; 33.120.30; 35.200 ISBN 978-2-8322-5289-5
– 2 – IEC 62680-1-3:2022
© USB-IF:2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
UNIVERSAL SERIAL BUS INTERFACES FOR DATA AND POWER –

Part 1-3: Common components – USB Type-C® Cable and
Connector Specification
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all
national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-
operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition
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indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62680-1-3 has been prepared by technical area 18: Multimedia home
systems and applications for end-user networks, of IEC technical committee 100: Audio, video
and multimedia systems and equipment.
The text of this standard was prepared by the USB Implementers Forum (USB-IF). The structure
and editorial rules used in this publication reflect the practice of the organization which submitted
it.
IEC 62680-1-3:2022 – 3 –
© USB-IF:2021
The text of this International Standard is based on the following documents:
Draft Report on voting
100/3715/CDV 100/3762/RVC
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
A list of all parts in the IEC 62680 series, published under the general title Universal serial bus
interfaces for data and power, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

– 4 – IEC 62680-1-3:2022
© USB-IF:2021
INTRODUCTION
The IEC 62680 series is based on a series of specifications that were originally developed by the
USB Implementers Forum (USB-IF). These specifications were submitted to the IEC under the
auspices of a special agreement between the IEC and the USB-IF.
This standard is the USB-IF publication Universal Serial Bus Type-C Cable and Connector
Specification Revision 2.0.
The USB Implementers Forum, Inc.(USB-IF) is a non-profit corporation founded by the group of
companies that developed the Universal Serial Bus specification. The USB-IF was formed to
provide a support organization and forum for the advancement and adoption of Universal Serial
Bus technology. The Forum facilitates the development of high-quality compatible USB peripherals
(devices), and promotes the benefits of USB and the quality of products that have passed
compliance testing.
ANY USB SPECIFICATIONS ARE PROVIDED TO YOU "AS IS, "WITH NO WARRANTIES
WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NON-INFRINGEMENT,
OR FITNESS FOR ANY PARTICULAR PURPOSE. THE USB IMPLEMENTERS FORUM AND THE
AUTHORS OF ANY USB SPECIFICATIONS DISCLAIM ALL LIABILITY, INCLUDING LIABILITY
FOR INFRINGEMENT OF ANY PROPRIETARY RIGHTS, RELATING TO USE OR
IMPLEMENTATION OR INFORMATION IN THIS SPECIFICAITON.
THE PROVISION OF ANY USB SPECIFICATIONS TO YOU DOES NOT PROVIDE YOU WITH
ANY LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY
INTELLECTUAL PROPERTY RIGHTS.
Entering into USB Adopters Agreements may, however, allow a signing company to participate in
a reciprocal, RAND-Z licensing arrangement for compliant products. For more information, please
see:
https://www.usb.org/documents
IEC DOES NOT TAKE ANY POSITION AS TO WHETHER IT IS ADVISABLE FOR YOU TO ENTER
INTO ANY USB ADOPTERS AGREEMENTS OR TO PARTICIPATE IN THE USB IMPLEMENTERS
FORUM.”
IEC 62680-1-3:2022 – 5 –
© USB-IF:2021
Universal Serial Bus
Type-C Cable and
Connector Specification
Release 2.1
May 2021
– 6 – IEC 62680-1-3:2022
© USB-IF:2021
Apple Inc., HP 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 , USB-C and USB4™ are trademarks of the Universal Serial Bus Implementers
Forum (USB-IF). DisplayPort™ is a trademark of VESA. All product names are trademarks,
registered trademarks, or service marks of their respective owners.
Thunderbolt™ is a trademark of Intel Corporation. You may only use the Thunderbolt™
trademark or logo in conjunction with products designed to this specification that complete
proper certification and executing a Thunderbolt™ trademark license – see
usb.org/compliance for further information.

IEC 62680-1-3:2022 – 7 –
© USB-IF:2021
CONTENTS
Specification Work Group Chairs / Specification Editors. 19
Specification Work Group Contributors . 19
Pre-Release Draft Industry Reviewing Companies That Provided Feedback . 25
Revision History . 25
1 Introduction . 26
1.1 Purpose . 26
1.2 Scope . 26
1.3 Related Documents . 26
1.4 Conventions . 27
1.4.1 Precedence . 27
1.4.2 Keywords . 27
1.4.3 Numbering . 28
1.5 Terms and Abbreviations . 28
2 Overview . 33
2.1 Introduction . 33
2.2 USB Type-C Receptacles, Plugs and Cables . 34
2.3 Configuration Process . 35
2.3.1 Source-to-Sink Attach/Detach Detection . 35
2.3.2 Plug Orientation/Cable Twist Detection . 36
2.3.3 Initial Power (Source-to-Sink) Detection and Establishing the Data
(Host-to-Device) Relationship . 36
2.3.4 USB Type-C VBUS Current Detection and Usage . 37
2.3.5 USB PD Communication . 37
2.3.6 Functional Extensions . 37
2.4 VBUS . 38
2.5 VCONN . 38
2.6 Hubs . 39
3 Mechanical . 40
3.1 Overview . 40
3.1.1 Compliant Connectors . 40
3.1.2 Compliant Cable Assemblies . 40
3.1.3 Compliant USB Type-C to Legacy Cable Assemblies . 41
3.1.4 Compliant USB Type-C to Legacy Adapter Assemblies . 41
3.2 USB Type-C Connector Mating Interfaces . 42
3.2.1 Interface Definition . 42
3.2.2 Reference Designs . 63
3.2.3 Pin Assignments and Descriptions . 71
3.3 Cable Construction and Wire Assignments . 72
3.3.1 Cable Construction (Informative) . 72
3.3.2 Wire Assignments . 74
3.3.3 Wire Gauges and Cable Diameters (Informative) . 75
3.4 Standard USB Type-C Cable Assemblies . 77
3.4.1 USB Full-Featured Type-C Cable Assembly. 77
3.4.2 USB 2.0 Type-C Cable Assembly . 78
3.4.3 USB Type-C Captive Cable Assemblies . 79
3.4.4 USB Type-C Thumb Drive Assemblies . 79
3.5 Legacy Cable Assemblies . 79

– 8 – IEC 62680-1-3:2022
© USB-IF:2021
3.5.1 USB Type-C to USB 3.1 Standard-A Cable Assembly . 80
3.5.2 USB Type-C to USB 2.0 Standard-A Cable Assembly . 82
3.5.3 USB Type-C to USB 3.1 Standard-B Cable Assembly . 83
3.5.4 USB Type-C to USB 2.0 Standard-B Cable Assembly . 84
3.5.5 USB Type-C to USB 2.0 Mini-B Cable Assembly . 85
3.5.6 USB Type-C to USB 3.1 Micro-B Cable Assembly. 86
3.5.7 USB Type-C to USB 2.0 Micro-B Cable Assembly. 87
3.6 Legacy Adapter Assemblies . 88
3.6.1 USB Type-C to USB 3.1 Standard-A Receptacle Adapter Assembly. 88
3.6.2 USB Type-C to USB 2.0 Micro-B Receptacle Adapter Assembly . 90
3.7 Electrical Characteristics . 91
3.7.1 Raw Cable (Informative) . 91
3.7.2 USB Type-C to Type-C Passive Cable Assemblies (Normative) . 92
3.7.3 Mated Connector (Informative – USB 3.2 Gen2 and USB4 Gen2) . 111
3.7.4 Receptacle Connector SI Requirements and Testing (Normative –
USB4 Gen3) . 114
3.7.5 USB Type-C to Legacy Cable Assemblies (Normative) . 115
3.7.6 USB Type-C to USB Legacy Adapter Assemblies (Normative) . 119
3.7.7 Shielding Effectiveness Requirements (Normative) . 120
3.7.8 DC Electrical Requirements (Normative) . 122
3.8 Mechanical and Environmental Requirements (Normative) . 125
3.8.1 Mechanical Requirements. 126
3.8.2 Environmental Requirements . 131
3.9 Docking Applications (Informative) . 132
3.10 Implementation Notes and Design Guides . 133
3.10.1 EMC Management (Informative) . 133
3.10.2 Stacked and Side-by-Side Connector Physical Spacing (Informative) . 135
3.10.3 Cable Mating Considerations (Informative) . 136
3.11 Extended Power Range (EPR) Cables . 136
3.11.1 Electrical Requirements . 136
3.11.2 EPR Cable Indentification Requirements . 137
4 Functional . 138
4.1 Signal Summary . 138
4.2 Signal Pin Descriptions . 138
4.2.1 SuperSpeed USB Pins . 138
4.2.2 USB 2.0 Pins . 138
4.2.3 Auxiliary Signal Pins . 139
4.2.4 Power and Ground Pins . 139
4.2.5 Configuration Pins . 139
4.3 Sideband Use (SBU) . 139
4.4 Power and Ground . 139
4.4.1 IR Drop . 139
4.4.2 VBUS . 140
4.4.3 VCONN . 142
4.5 Configuration Channel (CC) . 147
4.5.1 Architectural Overview . 147
4.5.2 CC Functional and Behavioral Requirements . 160
4.5.3 USB Port Interoperability Behavior . 195
4.6 Power . 213

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4.6.1 Power Requirements during USB Suspend . 214
4.6.2 VBUS Power Provided Over a USB Type-C Cable . 215
4.7 USB Hubs . 220
4.8 Power Sourcing and Charging . 221
4.8.1 DFP as a Power Source . 221
4.8.2 Non-USB Charging Methods . 223
4.8.3 Sinking Host . 223
4.8.4 Sourcing Device . 224
4.8.5 Charging a System with a Dead Battery . 224
4.8.6 USB Type-C Multi-Port Chargers . 224
4.9 Electronically Marked Cables . 227
4.9.1 Parameter Values . 228
4.9.2 Active Cables . 228
4.10 VCONN-Powered Accessories (VPAs) and VCONN-Powered USB Devices
(VPDs) . 228
4.10.1 VCONN-Powered Accessories (VPAs) . 228
4.10.2 VCONN-Powered USB Devices (VPDs) . 229
4.11 Parameter Values . 230
4.11.1 Termination Parameters . 230
4.11.2 Timing Parameters . 232
4.11.3 Voltage Parameters . 235
5 USB4 Discovery and Entry . 237
5.1 Overview of the Discovery and Entry Process. 237
5.2 USB4 Functional Requirements . 238
5.2.1 USB4 Host Functional Requirements . 238
5.2.2 USB4 Device Functional Requirements . 238
5.2.3 USB4 Alternate Mode Support . 238
5.2.3.1 USB4 Alternate Mode Support on Hosts . 238
5.2.3.2 USB4 Alternate Mode Support on Hubs and USB4-based Docks . 238
5.3 USB4 Power Requirements . 238
5.3.1 Source Power Requirements . 239
5.3.2 Sink Power Requirements. 239
5.3.3 Device Power Management Requirements . 239
5.4 USB4 Discovery and Entry Flow Requirements . 240
5.4.1 USB Type-C Initial Connection . 240
5.4.2 USB Power Delivery Contract . 240
5.4.3 USB4 Discovery and Entry Flow . 240
5.4.3.1 USB4 Device Discovery (SOP) . 241
5.4.3.2 USB4 Cable Discovery (SOP’) . 242
5.4.3.3 USB4 Operational Entry . 244
5.4.4 USB4 Post-Entry Operation . 244
5.4.4.1 During USB4 Operation . 244
5.4.4.2 Exiting USB4 Operation . 244
5.5 USB4 Hub Connection Requirements . 244
5.5.1 USB4 Hub Port Initial Connection Requirements. 245
5.5.2 USB4 Hub UFP and Host Capabilities Discovery . 245
5.5.3 Hub DFP Connection Requirements . 246
5.5.3.1 Speculative Connections . 246
5.5.3.2 Operational Connections . 246

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5.5.4 Hub Ports Connection Behavior Flow Examples . 246
5.5.5 Connecting to Downstream USB4 Hubs . 252
5.5.6 Fallback Functional Requirements for USB4 Hubs . 252
5.6 USB4 Device Connection Requirements . 252
5.6.1 Fallback Mapping of USB4 Peripheral Functions to USB Device

Class Types . 252
5.7 Parameter Values . 253
5.7.1 Timing Parameters . 253
6 Active Cables . 255
6.1 USB Type-C State Machine . 257
6.2 USB PD Requirements . 257
6.2.1 Active Cable USB PD Requirements . 259
6.2.2 USB PD Messages for OIAC . 260
6.2.3 Short Active Cable Behaviors in Response to Power Delivery Events . 270
6.3 OIAC Connection Flow and State Diagrams. 270
6.3.1 OIAC Connection Flow – Discovery – Phase 1 . 271
6.3.2 OIAC Connection Flow – Reboot – Phase 2 . 272
6.3.3 OIAC Connection Flow – Configuration – Phase 3 . 273
6.3.4 OIAC Connection State Diagram Plug-A . 276
6.3.5 OIAC Connection State Diagram Plug-B . 283
6.4 Active Cable Power Requirements. 288
6.4.1 VBUS Requirements . 288
6.4.2 OIAC VBUS Requirements . 288
6.4.3 USB PD Rules in Active State . 289
6.4.4 VCONN Requirements . 290
6.5 Mechanical . 290
6.5.1 Thermal . 290
6.5.2 Plug Spacing . 291
6.6 Electrical Requirements. 291
6.6.1 Shielding Effectiveness Requirement . 291
6.6.2 Low Speed Signal Requirement . 291
6.6.3 USB 2.0 . 292
6.6.4 USB 3.2 . 293
6.6.5 USB4 . 299
6.6.6 Return Loss . 312
6.7 Active Cables That Support Alternate Modes . 312
6.7.1 Discover SVIDs . 312
6.7.2 Discover Modes . 313
6.7.3 Enter/Exit Modes . 313
6.7.4 Power in Alternate Modes . 313
A Audio Adapter Accessory Mode . 314
A.1 Overview . 314
A.2 Detail . 314
A.3 Electrical Requirements. 315
A.4 Example Implementations . 316
A.4.1 Passive 3.5 mm to USB Type-C Adapter – Single Pole Detection
Switch . 316
A.4.2 3.5 mm to USB Type-C Adapter Supporting 500 mA Charge-Through . 317
B Debug Accessory Mode . 319

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B.1 Overview . 319
B.2 Functional . 319
B.2.1 Signal Summary . 320
B.2.2 Port Interoperability . 320
B.2.3 Debug Accessory Mode Entry . 320
B.2.4 Connection State Diagrams . 321
B.2.5 DTS Port Interoperability Behavior. 329
B.2.6 Orientation Detection . 337
B.3 Security/Privacy Requirements: . 338
C USB Type-C Digital Audio . 339
C.1 Overview . 339
C.2 USB Type-C Digital Audio Specifications . 339
D Thermal Design Considerations for Active Cables . 341
D.1 Introduction . 341
D.2 Model . 341
D.2.1 Assumptions . 341
D.2.2 Model Architecture . 342
D.2.3 Heat Sources . 342
D.2.4 Heat Flow . 343
D.3 USB 3.2 Single Lane Active Cable . 344
D.3.1 USB 3.2 Single-Lane Active Cable Design Considerations . 344
D.4 Dual-Lane Active Cables . 346
D.4.1 USB 3.2 Dual-Lane Active Cable Design Considerations . 347
D.4.2 USB 3.2 Dual-Lane Active Cable in a Multi-Port Configuration . 349
D.5 USB 3.2 Host and Device Design Considerations . 350
D.5.1 Heat Spreading or Heat Sinking from Host or Device . 350
D.5.2 Motherboard Temperature Control . 351
D.5.3 Wider Port Spacing for Multi-Port Applications . 351
D.5.4 Power Policies . 351
E Alternate Modes . 352
E.1 Alternate Mode Architecture . 352
E.2 Alternate Mode Requirements . 352
E.2.1 Alternate Mode Pin Reassignment . 353
E.2.2 Alternate Mode Electrical Requirements . 353
E.3 Parameter Values . 356
E.4 Example Alternate Mode – USB DisplayPort™ Dock. 356
E.4.1 USB DisplayPort™ Dock Example . 357
E.4.2 Functional Overview . 357
E.4.3 Operational Summary . 358
F Thunderbolt 3 Compatibility Discovery and Entry . 360
F.1 TBT3 Compatibility Mode Functional Requirements . 360
F.1.1 TBT3-Compatible Power Requirements . 360
F.1.2 TBT3-Compatible Host Requirements . 360
F.1.3 TBT3-Compatible Device Upstream Requirements . 360
F.1.4 TBT3-Compatible Device Downstream Requirements . 360
F.1.5 TBT3-Compatible Self-Powered Device Without Predefined Upstream
Port Rules . 361
F.1.6 TBT3-Compatible Devices with a Captive Cable . 361
F.2 TBT3 Discovery and Entry Flow. 361

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F.2.1 TBT3 Passive Cable Discover Identity Responses . 363
F.2.2 TBT3 Active Cable Discover Identity Responses . 365
F.2.3 TBT3 Device Discover Identity Responses . 368
F.2.4 TBT3 Discover SVID Responses . 369
F.2.5 TBT3 Device Discover Mode Responses . 370
F.2.6 TBT3 Cable Discover Mode Responses . 371
F.2.7 TBT3 Cable Enter Mode Command . 372
F.2.8 TBT3 Device Enter Mode Command . 373
F.2.9 TBT3 Cable Functional Difference Summary . 374
G Extracting Pulse Response from Sampled Data and Calculating Non-Linearity
Noise . 375
H USB PD High-Voltage Design Considerations . 377
H.1 Potential for Arcing Damage During Cable Withdrawal . 377
H.2 USB Type-C Cable Withdrawal Arcing Due to Sink Discharge . 377
H.3 Mitigating Arcing Damage During Cable Withdrawal . 379
H.3.1 Limiting Sink Discharge Rate . 380
H.3.2 Load Removal . 381
H.3.3 Limiting S
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