ISO INTERNATIONAL 9314-1 STANDARD First edition 1989-04-15 Information processing systems - Fibre Distributed Data Interface (FDDI) Part 1 : Token Ring Physical Layer Protocol (PHY) Systemes de traitement de I'information - Interface de donnees distribuees sur fibre (FDDI) Partie 1:Protocole de la couche physique de I'anneau a jeton Referencenumber ISO 9314-1 : 1989 (E) ISO9314-1:1989(E) Contents Page Foreword iv Introduction V Scope - 1 Normativereferences 2 Definitions 2 3 Conventionsandabbreviations 4 Conventions 4 4.1 4.2 Abbreviations 4 5Generaldescription 4 Services 5 6 6.1 PHY-to-MAC services 6 9 6.2 PHY-to-PMD services 6.3 PHY-to-SMT services 11 14 7 Facilities 14 Coding. 7.1 14 7.2 Symbol set 16 7.3 Linestates. 18 Operation 18 8.1 Coding overview 19 8.2 General organization 8.3 SmoothingFunction 23 ISO1989 Allrights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, inciuding photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56.CH-1211Geneve 20.Switzerland Printed in Switzerland i ISO9314-1:1989(E) 8.4 RepeatFilter. 26 8.5 27 Ringlatency Tables Table 1 Symbolcoding Figures Figure1FDDIphysicalconnectionexample. 5 Figure 2 An example of a FDDIPHY functional block diagram . 29 Figure3 Smoother state diagram.. Figure 4Repeatfilter state diagram . 31