SIST EN 62680-1-1:2016
(Main)Universal Serial Bus interfaces for data and power - Part 1-1: Universal Serial Bus interfaces - Common components - USB Battery Charging Specification, Revision 1.2 (IEC 62680-1-1:2015)
Universal Serial Bus interfaces for data and power - Part 1-1: Universal Serial Bus interfaces - Common components - USB Battery Charging Specification, Revision 1.2 (IEC 62680-1-1:2015)
IEC 62680-1-1:2015(E) contains specifications that define limits as well as detection, control and reporting mechanisms to permit devices to draw current in excess of the USB 2.0 specification for charging and/or powering up from dedicated chargers, hosts, hubs and charging downstream ports. These mechanisms are backward compatible with USB 2.0 compliant hosts and peripherals.
Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 1-1: Gemeinsame Bauteile - Festlegung für den USB-Batterie-Ladevorgang, Überarbeitung 1.2 (IEC 62680-1-1:2015)
Universal Serial Bus interfaces for data and power - Part 1-1: Universal Serial Bus interfaces - Common components - USB Battery Charging Specification, Revision 1.2 (TA 14) (IEC 62680-1-1:2015)
L'IEC 62680-1-1:2015 contient des spécifications définissant des limites ainsi que des mécanismes de détection, de contrôle et de rapports pour permettre à des dispositifs de puiser une quantité de courant supérieure à celle prévue par la spécification USB 2.0 pour se charger et/ou s'allumer à l'aide de chargeurs, d'hôtes, de concentrateurs et de ports en aval de chargement dédiés. Ces mécanismes sont rétrocompatibles avec les hôtes et périphériques compatibles USB 2.0.
Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 1-1. del: Vmesniki univerzalnega serijskega vodila (USB) - Skupne komponente - Specifikacija za polnjenje baterij prek USB, revizija 1.2 (IEC 62680-1-1:2015)
Delovna skupina za polnjenje baterij (Battery Charging Working Group) je zadolžena za ustvarjanje specifikacij, ki opredeljujejo omejitve ter mehanizme za zaznavanje, nadzor in poročanje, ki bi napravam omogočali, da porabijo več toka, kot je določeno v specifikacijah za USB 2.0, za polnjenje in/ali napajanje iz namenskih polnilcev, gostiteljev, vozlišč in vrat sprejemnega toka za napajanje. Ti mehanizmi so povratno združljivi z gostitelji in perifernimi napravami, ki podpirajo USB 2.0.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 1-1. del: Vmesniki univerzalnega serijskega vodila (USB) - Skupne komponente - Specifikacija za polnjenje baterij prek USB, revizija 1.2 (IEC 62680-1-1:2015)Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 1-1: Gemeinsame Bauteile - Festlegung für den USB-Batterie-Ladevorgang, Überarbeitung 1.2 (IEC 62680-1-1:2015)Universal Serial Bus interfaces for data and power - Part 1-1: Universal Serial Bus interfaces - Common components - USB Battery Charging Specification, Revision 1.2 (TA 14) (IEC 62680-1-1:2015)35.200Vmesniška in povezovalna opremaInterface and interconnection equipmentICS:Ta slovenski standard je istoveten z:EN 62680-1-1:2015SIST EN 62680-1-1:2016en,fr,de01-marec-2016SIST EN 62680-1-1:2016SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 62680-1-1
December 2015 ICS 29.220; 33.120; 35.200
English Version
Universal Serial Bus interfaces for data and power - Part 1-1: Universal Serial Bus interfaces - Common components - USB Battery Charging Specification, Revision 1.2 (TA 14) (IEC 62680-1-1:2015)
Interfaces de bus universel en série pour les données et l'alimentation électrique - Partie 1-1 : interfaces de bus universel en série - Composants communs - Spécification de chargement des batteries USB, révision 1.2 (TA 14) (IEC 62680-1-1:2015)
Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 1-1: Gemeinsame Bauteile - Festlegung für den USB-Batterie-Ladevorgang, Überarbeitung 1.2 (IEC 62680-1-1:2015) This European Standard was approved by CENELEC on 2015-10-14. 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 62680-1-1:2015 E SIST EN 62680-1-1:2016
The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2016-07-14 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-10-14
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 62680-1-1:2015 was approved by CENELEC as a European Standard without any modification. SIST EN 62680-1-1:2016
IEC 62680-1-1 Edition 1.0 2015-09 INTERNATIONAL STANDARD
Universal serial bus interfaces for data and power –
Part 1-1: Common components – USB Battery Charging Specification,
Revision 1.2
INTERNATIONAL ELECTROTECHNICAL COMMISSION
ICS 29.220; 33.120; 35.200
ISBN 978-2-8322-2844-9
– 2 – IEC 62680-1-1:2015 © IEC 2015 © USB-IF 2014 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
UNIVERSAL SERIAL BUS INTERFACES
FOR DATA AND POWER –
Part 1-1: Common components –
USB Battery Charging Specification, Revision 1.2
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 62680-1-1 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. SIST EN 62680-1-1:2016
IEC 62680-1-1:2015 © IEC 2015 – 3 – © USB-IF 2014 The text of this standard is based on the following documents: CDV Report on voting 100/2330/CDV 100/2433/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.
– 4 – IEC 62680-1-1:2015 © 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 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. SIST EN 62680-1-1:2016
IEC 62680-1-1:2015 © IEC 2015 – 5 – © USB-IF 2014 CONTENTS FOREWORD . 2 INTRODUCTION . 4 1 Introduction . 13 1.1 Scope . 13 1.2 Background. 13 1.3 Reference Documents . 13 1.4 Definitions of Terms . 14 1.4.1 Accessory Charger Adaptor . 14 1.4.2 ACA-Dock . 14 1.4.3 Attach versus Connect . 14 1.4.4 Charging Downstream Port . 14 1.4.5 Charging Port . 14 1.4.6 Dead Battery Threshold . 14 1.4.7 Dedicated Charging Port . 15 1.4.8 Downstream Port . 15 1.4.9 Micro ACA . 15 1.4.10 Portable Device . 15 1.4.11 Rated Current . 15 1.4.12 Standard ACA . 15 1.4.13 Standard Downstream Port . 15 1.4.14 USB Charger . 15 1.4.15 Weak Battery Threshold . 15 1.5 Parameter Values . 16 1.6 OTG Considerations . 16 1.7 Super Speed Considerations . 16 2 Dead Battery Provision . 16 2.1 Background. 16 2.2 DBP – Unconfigured Clause . 16 2.3 DBP – Configured Clause . 17 3 Charging Port Detection . 18 3.1 Overview. 18 3.2 Charger Detection Hardware . 19 3.2.1 Overview . 19 3.2.2 VBUS Detect . 20 3.2.3 Data Contact Detect . 20 3.2.4 Primary Detection . 23 3.2.5 Secondary Detection . 30 3.2.6 ACA Detection . 32 3.3 Charger Detection Algorithms . 34 3.3.1 Weak Battery Algorithm . 34 3.3.2 Good Battery Algorithm . 35 3.4 Charger Detection Timing . 36 3.4.1 Data Contact Detect Timing . 36 3.4.2 Detection Timing, CDP . 38 3.5 Ground Current and Noise Margins . 40 4 Charging Port and Portable Device Requirements . 40 SIST EN 62680-1-1:2016
– 6 – IEC 62680-1-1:2015 © IEC 2015 © USB-IF 2014 4.1 Charging Port Requirements . 40 4.1.1 Overshoot . 40 4.1.2 Maximum Current . 40 4.1.3 Detection Renegotiation . 40 4.1.4 Shutdown Operation . 41 4.1.5 Failure Voltage . 41 4.1.6 Multiple Ports . 41 4.2 Charging Downstream Port . 41 4.2.1 Required Operating Range . 41 4.2.2 Shutdown Operation . 42 4.2.3 Undershoot . 42 4.2.4 Detection Signaling . 42 4.2.5 Connector . 43 4.3 ACA-Dock . 43 4.3.1 Required Operating Range . 43 4.3.2 Undershoot . 43 4.3.3 Detection Signaling . 43 4.3.4 Connector . 43 4.4 Dedicated Charging Port . 43 4.4.1 Required Operating Range . 43 4.4.2 Undershoot . 44 4.4.3 Detection Signaling . 44 4.4.4 Connector . 44 4.5 Accessory Charger Adapter . 45 4.5.1 Required Operating Range . 45 4.5.2 Undershoot . 45 4.5.3 Detection Signaling . 45 4.5.4 Connector . 45 4.6 Portable Device . 45 4.6.1 Allowed Operating Range . 45 4.6.2 Detection Signaling . 46 4.6.3 Detection Renegotiation . 46 4.6.4 Connector . 47 5 Parameter Values . 47 6 Accessory Charger Adapter . 50 6.1 Introduction . 50 6.2 Micro ACA . 52 6.2.1 Micro ACA Ports . 52 6.2.2 Micro ACA Connectivity Options . 53 6.2.3 Micro ACA Architecture. 53 6.2.4 Micro ACA Modes of Operation . 54 6.2.5 Implications of not Supporting Micro ACA Detection . 56 6.2.6 Micro ACA Requirements . 56 6.2.7 Portable Device State Diagram . 57 6.3 Standard ACA . 59 6.3.1 Standard ACA Ports . 59 6.3.2 Standard ACA Architecture . 60 6.3.3 Standard ACA Modes of Operation . 62 6.3.4 Implications of not Supporting Standard ACA Detection . 62 SIST EN 62680-1-1:2016
IEC 62680-1-1:2015 © IEC 2015 – 7 – © USB-IF 2014 6.3.5 Standard ACA Requirements . 62
Figure 3-1 – System Overview . 18 Figure 3-2 – Charger Detection Hardware . 19 Figure 3-3 – Data Pin Offset . 20 Figure 3-4 – Data Contact Detect, Not Attached . 21 Figure 3-5 – Data Contact Detect, Standard Downstream Port . 22 Figure 3-6 – Primary Detection, DCP . 23 Figure 3-7 – Primary Detection, CDP . 25 Figure 3-8 – Primary Detection, SDP . 26 Figure 3-9 – Primary Detection, ACA-Dock . 27 Figure 3-10 – Primary Detection, ACA . 29 Figure 3-11 – Secondary Detection, DCP . 30 Figure 3-12 – Secondary Detection, CDP . 31 Figure 3-13 – ACA Detection . 33 Figure 3-14 – Weak Battery Algorithm . 34 Figure 3-15 – Good Battery Algorithm . 35 Figure 3-16 – DCD Timing, Contact After Start. 37 Figure 3-17 – DCD Timing, Contact Before Start . 37 Figure 3-18 – DCD Timing, No Contact . 38 Figure 3-19 – Detection Timing, CDP . 39 Figure 4-1 – CDP Required Operating Range . 42 Figure 4-2 – DCP Required Operating Range . 44 Figure 4-3 – Portable Device Allowed Operating Range . 46 Figure 6-1 – Accessory Charger Adapter . 51 Figure 6-2 – Micro ACA Ports . 52 Figure 6-3 – Micro ACA Architecture . 54 Figure 6-4 – Portable Device State Diagram . 58 Figure 6-5 – Standard ACA Ports . 59 Figure 6-6 – Standard ACA Architecture . 61
Table 5-1 – Voltages . 47 Table 5-2 – Currents . 48 Table 5-3 – Resistances . 49 Table 5-4 – Capacitances . 49 Table 5-5 – Times . 50 Table 6-1 – Micro ACA Connectivity Options . 53 Table 6-2 – Micro ACA Modes of Operation . 55 Table 6-3 – Standard ACA Connectivity Options . 60 Table 6-4 – Standard ACA Modes of Operation . 62
– 8 – IEC 62680-1-1:2015 © IEC 2015 © USB-IF 2014 Battery Charging Specification (Including errata and ECNs through March 15, 2012)
Revision 1.2 March 15, 2012
A LICENSE IS HEREBY GRANTED TO REPRODUCE THIS SPECIFICATION FOR INTERNAL USE ONLY. NO OTHER LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, IS GRANTED OR INTENDED HEREBY. USB-IF AND THE AUTHORS OF THIS SPECIFICATION EXPRESSLY DISCLAIM ALL LIABILITY FOR INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS, RELATING TO IMPLEMENTATION OF INFORMATION IN THIS SPECIFICATION. USB-IF AND THE AUTHORS OF THIS SPECIFICATION ALSO DO NOT WARRANT OR REPRESENT THAT SUCH IMPLEMENTATION(S) WILL NOT INFRINGE THE INTELLECTUAL PROPERTY RIGHTS OF OTHERS.
THIS SPECIFICATION IS PROVIDED "AS IS” AND WITH NO WARRANTIES, EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE. ALL WARRANTIES ARE EXPRESSLY DISCLAIMED. NO WARRANTY OF MERCHANTABILITY, NO WARRANTY OF NON-INFRINGEMENT, NO WARRANTY OF FITNESS FOR ANY PARTICULAR PURPOSE, AND NO WARRANTY ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE. IN NO EVENT WILL USB-IF OR USB-IF MEMBERS BE LIABLE TO ANOTHER FOR THE COST OF PROCURING SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS OF USE, LOSS OF DATA OR ANY INCIDENTAL, CONSEQUENTIAL, INDIRECT, OR SPECIAL DAMAGES, WHETHER UNDER CONTRACT, TORT, WARRANTY, OR OTHERWISE, ARISING IN ANY WAY OUT OF THE USE OF THIS SPECIFICATION, WHETHER OR NOT SUCH PARTY HAD ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
IEC 62680-1-1:2015 © IEC 2015 – 9 – © USB-IF 2014 Contributors Mark Lai Allion Test Labs Sammy Mbanta Astec Power Abel Astley Broadcom Kenneth Ma Broadcom Shimon Elkayam Broadcom Gaurav Singh Cypress Dan Ellis DisplayLink Graham Connolly Fairchild Oscar Freitas Fairchild Joel Silverman Kawasaki Pat Crowe MQP Electronics Juha Heikkila Nokia Richard Petrie Nokia Sten Carlsen Nokia Jeroen Kleinpenning NXP Semiconductors Terry Remple, Chair Qualcomm Dave Haglan SMSC Mark Bohm SMSC Morgan Monks SMSC Tim Knowlton SMSC Morten Christiansen ST Ericsson Nicolas Florenchie ST Ericsson Shaun Reemeyer ST Ericsson George Paparrizos Summit Microelectronics Adam Burns Synopsys Wei Ming Telecommunication Metrology Center of MII Jean Picard Texas Instruments Ivo Huber Texas Instruments Pasi Palojarvi Texas Instruments Steven Tom Texas Instruments Ed Beeman USB-IF Mark Paxson USB-IF
– 10 – IEC 62680-1-1:2015 © IEC 2015 © USB-IF 2014 Revision History Revision Date Author Description BC1.0 Mar 8, 2007 Terry Remple First release
BC1.1 April 15, 2009 Terry Remple Major updates to all sections. Added Data Contact Detect protocol, and Accessory Charger Adapter.
BC1.2 Oct 5, 2010 Terry Remple Adam Burns Following items indicate changes from BC1.1 to BC1.2. References below to Section, Figures and Tables refer to BC1.2, unless BC1.1 is specifically indicated. 1.
Allow DCPs to output more than 1.5A. Allows Portable Devices (PDs) with switch mode chargers to draw more power. Section 4.4.1. 2.
Increase minimum CDP current to 1.5A. Without change, PDs had to draw less than 500mA, to avoid CDP shutdown. Table 5-2. 3.
Indicate that ICDP max and IDCP max limits of 5A come from USB 2.0, and are safety limits. Table 5-2 note 1. 4.
Allow PDs to draw up to 1.5A during HS chirp and traffic. Remove previous limits of 560mA and 900mA which was based on HS common mode ranges. Section 3.5. 5.
Require CDPs to support 1.5A during HS chirp and traffic. Affects CDP common mode range. Section 3.5. 6.
Reduce maximum PD current from 1.8A to 1.5A, to avoid shutdown when attached to CDP. Table 5-2. 7.
Rename Docking Station to ACA-Dock, to avoid confusion with other types of Docking Stations. 8.
Require ACA-Dock to differentiate itself from an ACA, by enabling VDM_SRC during no activity. Section 3.2.4.4. 9.
Allow CDP to leave VDM_SRC enabled while peripheral not connected. Section 3.2.4.2. 10.
Remove ICHG_SHTDWN. This was a recommended max output current for Charging Ports with VBUS grounded. BC1.1 Section 4.1. 11.
Require VDP_SRC to not pull D+ below 2.2V when D+ is being pulled to VDP_UP through RDP_UP. Require VDM_SRC to not pull D- below 2.2V when D- is being pulled high. Required for ACA-Dock support. Table 5-1 notes 1 and 2. 12.
Make DCD current source optional for PDs. Section 3.2.3. 13.
Make DCD timeout required for PDs. Section 3.2.3. 14.
Make Secondary Detection optional for PDs. Section 4.6.2. 15.
Make Good Battery Algorithm required behavior for PDs. Section 3.2.4. 16.
Remove resistive detection. BC1.1 Section 3.9. 17.
Change PD Required Operating Range to include 4.5V at 500mA. Figure 4-3. 18.
Allow any downstream port to act as a DCP. Section 4.1.3. 19.
Require PDs to enable VDP_SRC or RDP_PU when charging from a DCP. Section 3.3.2. SIST EN 62680-1-1:2016
IEC 62680-1-1:2015 © IEC 2015 – 11 – © USB-IF 2014 Revision Date Author Description
20.
Allow chargers to renegotiate current with PD by dropping and reasserting VBUS. Section 4.1.3. 21.
Require PDs to discharge their own VBUS input after VBUS drops to support charger port renegotiation request. Section 4.6.3. 22.
Allow PDs to disconnect and repeat Charger Detection multiple times while attached, with specified timing. Section 4.6.3. 23.
Reduce DCP input impedance between D+, D- to VBUS and ground from 1MΩ to 300kΩ. Section 4.4.3. 24.
Require CDPs to recover after over-current condition. Section 4.2.2. 25.
Allow greater DCP undershoot for large load current steps, to enable low quiescent current chargers required by Europe. Section 4.4.2. 26.
Define ACAs and ACA-Docks as types of Charging Ports. Section 1.4.5. 27.
Use session valid voltage range defined in EH and OTG Supplement rev 2.0. Section 3.2.2. 28.
Only devices that can operate stand-alone from internal battery power are allowed to use the Dead Battery Provision. Section 2.2. 29.
Allow compound PDs to draw ISUSP plus an responsible for protecting themselves against higher voltages on VBUS. BC1.1 Section 6.7. 45.
Require ACAs to continue providing power to OTG device from Charging Port, even if ground offsets or USB reset cause D- to go below VDAT_REF. Section 6.2.6. 46.
Change charger shutdown recovery time (TSHTDWN_REC) from 2 seconds to 2 minutes. Table 5-5. 47. Indicate that ACA-Dock is required to pull D+ to VDP_UP with RDP_UP when VBUS is asserted. Section 3.2.4.4. 48.
Remove statements regarding devices with multiple receptacles. Covered in Multiple Receptacle white paper at http://www.usb.org/developers/docs/. 49.
Improve readability by adding and updating drawings, re-structuring sections, and clarifying text. BC 1.2 plus errata Oct 12, 2011 Pat Crowe Includes errata changes from Oct 12, 2011 BC 1.2 plus further errata Mar 15, 2012 Pat Crowe Includes errata changes from Mar 15, 2012:
1. Corrections to Micro ACA specification.
– 12 – IEC 62680-1-1:2015 © IEC 2015 © USB-IF 2014 Acronyms ACA Accessory Charger Adapter CDP Charging Downstream Port DBP Dead Battery Provision DCD Data Contact Detect DCP Dedicated Charging Port FS Full Speed HS High-Speed LS Low-Speed OTG On-The-Go PC Personal Computer PD Portable Device PHY Physical Layer Interface for High-Speed USB PS2 Personal System 2 SDP Standard Downstream Port SRP Session Request Protocol TPL Targeted Peripheral List USB Universal Serial Bus USBCV USB Command Verifier USB-IF USB Implementers Forum VBUS Voltage line of the USB interface
IEC 62680-1-1:2015 © IEC 2015 – 13 – © USB-IF 2014 UNIVERSAL SERIAL BUS INTERFACES
FOR DATA AND POWER –
Part 1-1: Common components –
USB Battery Charging Specification, Revision 1.2
1 Introduction 1.1 Scope The Battery Charging Working Group is chartered with creating specifications that define limits as well as detection, control and reporting mechanisms to permit devices to draw current in excess of the USB 2.0 specification for charging and/or powering up from dedicated chargers, hosts, hubs and charging downstream ports. These mechanisms are backward compatible with USB 2.0 compliant hosts and peripherals.
1.2 Background The USB ports on personal computers are convenient places for Portable Devices (PDs) to draw current for charging their batteries. This convenience has led to the creation of USB Chargers that simply expose a USB standard-A receptacle. This allows PDs to use the same USB cable to charge from either a PC or from a USB Charger. If a PD is attached to a USB host or hub, then the USB 2.0 specification requires that after connecting, a PD must draw less than: • 2.5 mA average if the bus is suspended • 100 mA if bus is not suspended and not configured • 500 mA if bus is not suspended and configured for 500 mA If a PD is attached to a Charging Port, (i.e. CDP, DCP, ACA-Dock or ACA), then it is allowed to draw IDEV_CHG without having to be configured or follow the rules of suspend. In order for a PD to determine how much current it is allowed to draw from an upstream USB port, there need to be mechanisms that allow the PD to distinguish between a Standard Downstream Port and a Charging Port. This specification defines just such mechanisms.
Since PDs can be attached to USB chargers from various manufacturers, it is important that all provide an acceptable user experience. This specification defines the requirements for a compliant USB charger, which is referred to in this spec as a USB Charger. If a PD has a Dead or Weak Battery, then the Connect Timing Engineering Change Notice (ECN) issued by the USB-IF on the USB 2.0 spec allows that device to draw up to IUNIT while attached but not connected. The conditions associated with this ECN are contained in Section 2 of this specification, and are referred to as the Dead Battery Provision (DBP). 1.3 Reference Documents The following specifications contain information relevant to the Battery Charging Specification. • OTG and Embedded Host Supplement, Revision 2.0 • USB 2.0 Specification • USB 3.0 Specification SIST EN 62680-1-1:2016
– 14 – IEC 62680-1-1:2015 © IEC 2015 © USB-IF 2014 1.4 Definitions of Terms This section contains definitions for some of the terms used in this specification. 1.4.1 Accessory Charger Adaptor An Accessory Charger Adaptor (ACA) is an adaptor which allows a single USB port to be attached to both a charger and another device at the same time.
The following terminology is used when referring to an ACA: • ACA-A An ACA with ID resistance of RID_A • ACA-B An ACA with ID resistance of RID_B • ACA-C An ACA with ID resistance of RID_C See Section 6 for details on an ACA. 1.4.2 ACA-Dock An ACA-Dock is a docking station that has one upstream port, and zero or more downstream ports. The upstream port can be attached to a PD, and is capable of sourcing ICDP to the PD. An ACA-Dock signals it is an ACA-Dock to the PD by enabling VDM_SRC during USB idle, and by pulling ID to ground through a resistance of RID_A. See Section 3.2.4.4 for more details. 1.4.3 Attach versus Connect This specification makes a distinction between the words “attach” and “connect”. A downstream device is considered to be attached to an upstream port when there is a physical cable between the two. A downstream device is considered to be connected to an upstream port when it is attached to the upstream port, and when the downstream device has pulled either the D+ or D- data line high through a 1.5 kΩ resistor, in order to enter Low-Speed, Full-Speed or High-Speed signaling. 1.4.4 Charging Downstream Port A Charging Downstream Port (CDP) is a downstream port on a device that complies with the USB 2.0 definition of a host or a hub, except that it shall support the Charging Downstream Port features specified herein. A CDP shall output a voltage of VDM_SRC on its D- line when it senses a voltage greater than VDAT_REF but less than VLGC on its D+ line when not connected to a peripheral. A CDP shall not output a voltage of VDM_SRC on its D- line from the time that the peripheral is connected, to the time that the peripheral is disconnected. 1.4.5 Charging Port A Charging Port is a DCP, CDP, ACA-Dock or ACA. 1.4.6 Dead Battery Threshold The Dead Battery Threshold is defined as the maximum charge level of a battery such that below this threshold, a device is assured of not being able to power up successfully. A Dead Battery is defined as one that is below the Dead Battery Threshold. SIST EN 62680-1-1:2016
IEC 62680-1-1:2015 © IEC 2015 – 15 – © USB-IF 2014 1.4.7 Dedicated Charging Port A Dedicated Charging Port (DCP) is a downstream port on a device that outputs power through a USB connector, but is not capable of enumerating a downstream device. A DCP shall source IDCP at an average voltage of VCHG. A DCP shall short the D+ line to the D- line. 1.4.8 Downstream Port In this specification, a Downstream Port refers to either a Standard Downstream Port or a Charging Downstream Port. 1.4.9 Micro ACA A Micro ACA is an ACA with a Micro-AB receptacle on the Accessory Port. 1.4.10 Portable Device A PD as used in this specification is a device which is compliant with this specification and the USB 2.0 specification, and can draw charging current from USB.
1.4.11 Rated Current The Rated Current of a Charging Port is the amount of current that a Charging Port can output and still maintain a VBUS voltage of VCHG. The Rated Current of a DCP is required to be within IDCP, and the rated current of a CDP or ACA-Dock is required to be within ICDP. 1.4.12 Standard ACA A Standard ACA is an ACA with a Standard-A receptacle on the Accessory Port. 1.4.13 Standard Downstream Port In this specification, a Standard Downstream Port (SDP) refers to a downstream port on a device that complies with the USB 2.0 definition of a host or hub. An SDP expects a downstream device with a good battery to draw less than 2.5 mA average when unconnected or suspended, up to 100 mA maximum when connected and not configured and not suspended, and up to 500 mA maximum if so configured and not suspended. A downstream device can be enumerated when it is connected to an SDP. An SDP pulls the D+ and D- lines to ground through two 15 kΩ (typical) resistors. An SDP may have the ability to sense when a PD is driving the D+ line to VDP_SRC, and then manage its power states accordingly. PDs are required to drive D+ to VDP_SRC whenever they draw more than ISUSP while attached but not connected, as described in the Dead Battery Provision. 1.4.14 USB Charger A USB Charger is a device with a DCP, such as a wall adapter or car power adapter. 1.4.15 Weak Battery Threshold The Weak Battery Threshold is defined as the minimum charge level of a battery such that above this threshold, a device is assured of being able to power up successfully. SIST EN 62680-1-1:2016
– 16 – IEC 62680-1-1:2015 © IEC 2015 © USB-IF 2014 A Weak Battery is defined as one that is above the Dead Battery Threshold and below the Weak Battery Threshold. A device with a Weak Battery may or may not be able to power up a device successfully. A Good Battery is defined as one that is above the Weak Battery Threshold. 1.5 Parameter Values Parameter names are used throughout this specification instead of parameter values. All parameter values are found in Section 5. 1.6 OTG Considerations A PD with a Dead Battery cannot differentiate between a PC and an OTG A-device. Thus, a PD will treat both the same. If an OTG A-device is connected to a PD with a dead battery, then the OTG A-device is under no obligation to provide any more current than it normally would to any device on its Targeted Peripheral List (TPL). An OTG A-device is allowed to stop driving VBUS after a time of TA_WAIT_BCON (See OTG 2.0 Supplement for value) while waiting for the B-device to connect. Thus, a PD with a Dead Battery may not have time for significant charging when attached to an OTG A-device, if it does not connect. 1.7 Super Speed Considerations SuperSpeed ports defined in USB 3.0 are allowed to implement the charger detection mechanisms defined in this spec. When a PD detects it is attached to a SuperSpeed port, then ICFG_MAX changes to 900 mA, and IUNIT changes to 150 mA. 2 Dead Battery Provision 2.1 Background The USB 2.0 specification allows a downstream device to draw a suspend current of up to ISUSP from a SDP when the device is not
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