SIST EN 62680-2-1:2016

Universal Serial Bus interfaces for data and power - Part 2-1: Universal Serial Bus Specification, Revision 2.0 (TA 14) (IEC 62680-2-1:2015)

The specification is primarily targeted to peripheral developers and system OEMs, but provides valuable information for platform operating system/ BIOS/ device driver, adapter IHVs/ISVs, and platform/ adapter controller vendors. This specification can be used for developing new products and associated software.

Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 2-1: Festlegung des Universellen Seriellen Busses, Überarbeitung 2.0 (IEC 62680-2-1:2015)

Interfaces de bus universel en série pour les données et l'alimentation électrique - Partie 2-1 : spécification du bus universel en série, révision 2.0 (TA 14) (IEC 62680-2-1:2015)

IEC 62680-2-1:2015 définit une interface USB normalisée. La spécification décrit les attributs du bus, la définition du protocole, les types de transactions, la gestion du bus et l'interface de programmation exigée pour la conception et la création des systèmes et des périphériques conformes à cette norme.
L'objectif est de permettre aux dispositifs de différents fournisseurs de fonctionner ensemble dans une architecture ouverte. La spécification se veut une amélioration de l'architecture des ordinateurs, dans des environnements portables, de bureau et domestiques. La spécification vise à accorder aux fabricants d'origine (OEM, Original Equipment Manufacturer) de systèmes et aux développeurs de périphériques suffisamment de liberté pour assurer la polyvalence des produits et leur différenciation sur le marché sans avoir à prendre en charge des interfaces obsolètes ni perdre en termes de compatibilité.

Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 2-1. del: Specifikacija univerzalnega serijskega vodila, revizija 2.0 (TA 14) (IEC 62680-2-1:2015)

Specifikacija je namenjena predvsem razvijalcem perifernih naprav in sistemskim razvijalcem originalne opreme, vendar vsebuje tudi informacije, ki so dragocene za prodajalce operacijskih sistemov za računalniška okolja/BIOS-ov/gonilnikov naprav, vmesnikov IHVs/ISVs in krmilnikov vmesnikov/računalniških okolij. To specifikacijo je mogoče uporabljati za razvijanje novih izdelkov in z njimi povezane programske opreme.

General Information

• Status: Published
• Publication Date: 10-Feb-2016
• ICS: 35.200 - Interface and interconnection equipment
• Technical Committee: AVM - Audio, video and multimedia systems and equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 28-Dec-2015
• Due Date: 03-Mar-2016
• Completion Date: 11-Feb-2016
• Ref Project: EN 62680-2-1:2015 - Universal Serial Bus interfaces for data and power - Part 2-1: Universal Serial Bus Specification, Revision 2.0 (TA 14)

Relations

• Replaces: SIST EN 62680-1:2014 - Universal Serial Bus interfaces for data and power -- Part 1: Universal Serial Bus specification
• Effective Date: 18-Oct-2016

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62680-2-1:2016
01-marec-2016
Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 2-1.
del: Specifikacija univerzalnega serijskega vodila, revizija 2.0 (TA 14) (IEC 62680-2-
1:2015)
Universal Serial Bus interfaces for data and power - Part 2-1: Universal Serial Bus
Specification, Revision 2.0 (TA 14) (IEC 62680-2-1:2015)
Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 2-1:
Festlegung des Universellen Seriellen Busses, Überarbeitung 2.0 (IEC 62680-2-1:2015)
Interfaces de bus universel en série pour les données et l'alimentation électrique - Partie
2-1 : spécification du bus universel en série, révision 2.0 (TA 14) (IEC 62680-2-1:2015)
Ta slovenski standard je istoveten z: EN 62680-2-1:2015
ICS:
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN 62680-2-1:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62680-2-1:2016

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SIST EN 62680-2-1:2016


EUROPEAN STANDARD EN 62680-2-1

NORME EUROPÉENNE

EUROPÄISCHE NORM
December 2015
ICS 29.220; 33.120; 35.200

English Version
Universal Serial Bus interfaces for data and power - Part 2-1:
Universal Serial Bus Specification, Revision 2.0 (TA 14)
(IEC 62680-2-1:2015)
Interfaces de bus universel en série pour les données et Schnittstellen des Universellen Seriellen Busses für Daten
l'alimentation électrique - Partie 2-1 : spécification du bus und Energie - Teil 2-1: Festlegung des Universellen
universel en série, révision 2.0 (TA 14) Seriellen Busses, Überarbeitung 2.0
(IEC 62680-2-1:2015) (IEC 62680-2-1:2015)
This European Standard was approved by CENELEC on 2015-10-20. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 62680-2-1:2015 E

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SIST EN 62680-2-1:2016
EN 62680-2-1:2015
European foreword
The text of document 100/2331/CDV, future edition 1 of IEC 62680-2-1, prepared by Technical Area
14 "Interfaces and methods of measurement for personal computing equipment" of IEC/TC 100
"Audio, video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel
vote and approved by CENELEC as EN 62680-2-1:2015.

The following dates are fixed:
• latest date by which the document has to be (dop) 2016-07-20
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2018-10-20
• latest date by which the national
standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.

Endorsement notice
The text of the International Standard IEC 62680-2-1:2015 was approved by CENELEC as a
European Standard without any modification.
2

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SIST EN 62680-2-1:2016




IEC 62680-2-1

®


Edition 1.0 2015-09




INTERNATIONAL



STANDARD








colour

inside










Universal serial bus interfaces for data and power –

Part 2-1: Universal Serial Bus Specification, Revision 2.0



























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 29.220; 33.120; 35.200 ISBN 978-2-8322-2845-6



  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

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SIST EN 62680-2-1:2016
– 2 – IEC 62680-2-1:2015 © IEC 2015
© USB-IF 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

UNIVERSAL SERIAL BUS INTERFACES FOR DATA AND POWER –

Part 2-1: Universal Serial Bus Specification, Revision 2.0

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 to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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 62680-2-1 has been prepared by technical area 14: Interfaces and
methods of measurement for personal computing equipment, of IEC technical committee 100:
Audio, video and multimedia systems and equipment.
The text of this standard is based on documents 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.

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SIST EN 62680-2-1:2016
IEC 62680-2-1:2015 © IEC 2015 – 3 –
© USB-IF 2014
The text of this standard is based on the following documents:
CDV Report on voting
100/2331/CDV 100/2434/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
A list of all the 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 publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication
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.

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SIST EN 62680-2-1:2016
– 4 – IEC 62680-2-1:2015 © IEC 2015
© USB-IF 2014
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 to submitted to the IEC
under the auspices of a special agreement between the IEC and the USB IF.
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, royalty-free licensing arrangement for compliant products. For
more information, please see:
http://www.usb.org/developers/docs/
http://www.usb.org/developers/devclass_docs#approved

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.”
This series covers the Universal Series Bus interfaces for data and power and consists of the
following parts:
IEC 62680-1-1, Universal Serial Bus interfaces for data and power – Part 1-1: Common
components – USB Battery Charging Specification, Revision 1.2
IEC 62680-2-1, Universal Serial Bus interfaces for data and power – Part 2-1: Universal
Serial Bus Specification, Revision 2.0
IEC 62680-2-2, Universal Serial Bus interfaces for data and power – Part 2-2: USB Micro-
USB Cables and Connectors Specification, Revision 1.01
IEC 62680-2-3, Universal Serial Bus interfaces for data and power – Part 2-3: Universal
Serial Bus Cables and Connectors Class Document, Revision 2.0
This part of the IEC 62680 series consists of several distinct parts:
• the main body of the text, which consists of the original specification and all ECN and
Errata developed by the USB-IF.

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SIST EN 62680-2-1:2016
IEC 62680-2-1:2015 © IEC 2015 – 5 –
© USB-IF 2014
CONTENTS
FOREWORD . 2
INTRODUCTION . 4
1 Chapter 1 Introduction . 29
1.1 Motivation . 29
1.2 Objective of the Specification . 29
1.3 Scope of the Document . 30
1.4 USB Product Compliance . 30
1.5 Document Organization . 30
2 Chapter 2 Terms and Abbreviations . 31
3 Chapter 3 Background . 37
3.1 Goals for the Universal Serial Bus . 37
3.2 Taxonomy of Application Space . 37
3.3 Feature List . 38
4 Chapter 4 Architectural Overview . 40
4.1 USB System Description . 40
4.1.1 Bus Topology . 40
4.2 Physical Interface . 41
4.2.1 Electrical . 42
4.2.2 Mechanical . 42
4.3 Power . 42
4.3.1 Power Distribution . 43
4.3.2 Power Management . 43
4.4 Bus Protocol . 43
4.5 Robustness . 43
4.5.1 Error Detection . 44
4.5.2 Error Handling . 44
4.6 System Configuration . 44
4.6.1 Attachment of USB Devices . 44
4.6.2 Removal of USB Devices . 44
4.6.3 Bus Enumeration . 45
4.7 Data Flow Types . 45
4.7.1 Control Transfers . 45
4.7.2 Bulk Transfers . 45
4.7.3 Interrupt Transfers . 45
4.7.4 Isochronous Transfers . 46
4.7.5 Allocating USB Bandwidth . 46
4.8 USB Devices . 46
4.8.1 Device Characterizations . 46
4.8.2 Device Descriptions . 47
4.9 USB Host: Hardware and Software . 49
4.10 Architectural Extensions . 49
5 Chapter 5 USB Data Flow Model . 50
5.1 Implementer Viewpoints . 50
5.2 Bus Topology . 51
5.2.1 USB Host . 52
5.2.2 USB Devices . 52

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SIST EN 62680-2-1:2016
– 6 – IEC 62680-2-1:2015 © IEC 2015
© USB-IF 2014
5.2.3 Physical Bus Topology . 53
5.2.4 Logical Bus Topology . 54
5.2.5 Client Software-to-function Relationship . 55
5.3 USB Communication Flow . 55
5.3.1 Device Endpoints . 57
5.3.2 Pipes . 58
5.3.3 Frames and Microframes . 60
5.4 Transfer Types. 60
5.4.1 Table Calculation Examples. 61
5.5 Control Transfers . 62
5.5.1 Control Transfer Data Format . 62
5.5.2 Control Transfer Direction . 63
5.5.3 Control Transfer Packet Size Constraints . 63
5.5.4 Control Transfer Bus Access Constraints . 64
5.5.5 Control Transfer Data Sequences . 66
5.6 Isochronous Transfers . 67
5.6.1 Isochronous Transfer Data Format. 67
5.6.2 Isochronous Transfer Direction . 67
5.6.3 Isochronous Transfer Packet Size Constraints . 67
5.6.4 Isochronous Transfer Bus Access Constraints . 69
5.6.5 Isochronous Transfer Data Sequences . 70
5.7 Interrupt Transfers . 70
5.7.1 Interrupt Transfer Data Format . 70
5.7.2 Interrupt Transfer Direction . 70
5.7.3 Interrupt Transfer Packet Size Constraints. 70
5.7.4 Interrupt Transfer Bus Access Constraints . 71
5.7.5 Interrupt Transfer Data Sequences . 74
5.8 Bulk Transfers . 74
5.8.1 Bulk Transfer Data Format . 74
5.8.2 Bulk Transfer Direction . 74
5.8.3 Bulk Transfer Packet Size Constraints . 74
5.8.4 Bulk Transfer Bus Access Constraints . 75
5.8.5 Bulk Transfer Data Sequences . 76
5.9 High-Speed, High Bandwidth Endpoints . 77
5.9.1 High Bandwidth Interrupt Endpoints . 77
5.9.2 High Bandwidth Isochronous Endpoints . 78
5.10 Split Transactions . 79
5.11 Bus Access for Transfers . 79
5.11.1 Transfer Management . 80
5.11.2 Transaction Tracking . 82
5.11.3 Calculating Bus Transaction Times . 84
5.11.4 Calculating Buffer Sizes in Functions and Software . 86
5.11.5 Bus Bandwidth Reclamation . 86
5.12 Special Considerations for Isochronous Transfers. 86
5.12.1 Example Non-USB Isochronous Application . 88
5.12.2 USB Clock Model . 89
5.12.3 Clock Synchronization . 91
5.12.4 Isochronous Devices . 91
5.12.5 Data Prebuffering . 99

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SIST EN 62680-2-1:2016
IEC 62680-2-1:2015 © IEC 2015 – 7 –
© USB-IF 2014
5.12.6 SOF Tracking . 100
5.12.7 Error Handling . 100
5.12.8 Buffering for Rate Matching . 101
6 Chapter 6 Mechanical . 103
6.1 Architectural Overview . 103
6.2 Keyed Connector Protocol . 103
6.3 Cable . 104
6.4 Cable Assembly . 104
6.4.1 Standard Detachable Cable Assemblies . 104
6.4.2 High-/full-speed Captive Cable Assemblies . 106
6.4.3 Low-speed Captive Cable Assemblies . 108
6.4.4 Prohibited Cable Assemblies . 110
6.5 Connector Mechanical Configuration and Material Requirements . 110
6.5.1 USB Icon Location . 111
6.5.2 USB Connector Termination Data . 111
6.5.3 Series “A” and Series “B” Receptacles . 112
6.5.4 Series “A” and Series “B” Plugs . 115
6.6 Cable Mechanical Configuration and Material Requirements . 118
6.6.1 Description . 119
6.6.2 Construction . 119
6.6.3 Electrical Characteristics . 122
6.6.4 Cable Environmental Characteristics . 122
6.6.5 Listing . 122
6.7 Electrical, Mechanical, and Environmental Compliance Standards . 123
6.7.1 Applicable Documents . 128
6.8 USB Grounding . 128
6.9 PCB Reference Drawings. 128
7 Chapter 7 Electrical . 132
7.1 Signaling. 132
7.1.1 USB Driver Characteristics . 135
7.1.2 Data Signal Rise and Fall, Eye Patterns . 142
7.1.3 Cable Skew . 151
7.1.4 Receiver Characteristics . 151
7.1.5 Device Speed Identification . 153
7.1.6 Input Characteristics . 154
7.1.7 Signaling Levels . 157
7.1.8 Data Encoding/Decoding . 170
7.1.9 Bit Stuffing . 170
7.1.10 Sync Pattern . 172
7.1.11 Data Signaling Rate . 173
7.1.12 Frame Interval . 173
7.1.13 Data Source Signaling . 174
7.1.14 Hub Signaling Timings . 175
7.1.15 Receiver Data Jitter . 177
7.1.16 Cable Delay . 179
7.1.17 C
...