IEC ISO SO/EC24739-2 Edition 1.02009-11 INTERNATIONAL STANDARD Information technology - AT attachment with packet interface-7 Part 2: Parallel transport protocols and physical interconnect (ATA/ATAPl-7) ISO/IEC24739-2:2009(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2009 ISO/lEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IsO/lEC copyright or have an enquiry about obtaining additional rights to this IEC Central Office 3, rue de Varembé CH-1211 Geneva 20 Switzerland Email: [email protected] Web:www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications latest edition, a corrigenda or an amendment might have been published. -Catalogue of IEC publications:www.iec.ch/searchpub The IEc on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,..) It also gives information on projects, withdrawn and replaced publications. - IEC Just Published: www.iec.ch/online news/justpub Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available on-line and also by email. • Electropedia: www.electropedia.org The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical Vocabulary online. - Customer Service Centre: www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service Centre FAQ or contact us: Email: [email protected] Tel.: +41 22 919 02 11 Fax:+4122 9190300 IEC ISo ISO/IEC 24739-2 Edition 1.02009-11 INTERNATIONAL STANDARD Information technology - AT attachment with packet interface-7 . Part 2: Parallel transport protocols and physical interconnect (ATA/ATAPl-7) INTERNATIONAL ELECTROTECHNICAL COMMISSION PRICE CODE XE ICS 35.200 ISBN 2-8318-1071-0 24739-2 @ ISO/IEC:2009(E) 2 CONTENTS FOREWORD. 10 INTRODUCTION.. .11 Scope. .12 2 Normative references 12 3 Terms, definitions, abbreviations, conventions and keywords 3.1 Terms, definitions and abbreviations .12 3.2 Abbreviations .21 3.3 Conventions 22 3.3.1 General 22 3.3.2 Precedence 22 3.3.3 Lists 22 3.3.4 Keywords. .22 3.3.5 Numbering. .23 3.3.6 Signal conventions. 3.3.7 Bit conventions . 3.3.8 State diagram conventions. 3.3.9 Timing conventions .. 3.3.10 Byte ordering for data transfers.. ..26 3.3.11 Byte, word and DWORD relationships ... ..28 3.4 ISO/IEC24739-3..... 4 General operational requirements ...... 5 I/O register descriptions. .28 6 Command descriptions .28 Parallel interface physical and electrical requirements ... 7.1 Cable configuration.. .29 7.2 Electrical characteristics . .29 7.2.1 General .29 7.2.2 AC characteristics measurement techniques 7.2.3 Driver types and required termination .32 7.2.4 Electrical characteristics for Ultra DMA .32 7.3 Connectorsand cable asemblies. .35 7.3.1 General .35 7.3.2 40-pin connector.. .35 7.3.3 4-pin power connector.. .44 7.3.4 Unitized connectors . .46 7.3.5 50-pin 65 mm (2.5 in) form factor style connector 7.3.6 68-pin PCMCIA connector.... 7.3.7 48 mm (1.8 in) 3.3 V parallel connector... 7.4 Physical form factors ... 7.4.1 95 mm (3.5 in) form factor... 7.4.2 65 mm (2.5 in) form factor.. .59 7.4.3 48 mm (1.8 in) PCMCIA form factor .. 7.4.4 48 mm (1.8 in) 5 V parallel form factor .. .64 7.4.5 48 mm (1.8 in) 3.3 V parallel form factor ... .68 7.4.6 130 mm (5.25 in) form