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 Reference number ISO 9314-1 : 1989 (E) Copyright International Organization for Standardization cing permitted without license from IHS Not for Resale ISO 9314-1 : 1989 (E) Contents Page Foreword . iv Scope 1 Normative references 2 2 3 Definitions 2 Conventions and abbreviations . 4 4.1 Conventions 4.2 Abbreviations . 5 General description.. 4 5 6 6.1 PHY-to-MAC services . 6 6.2 PHY-to-PMD services 9 6.3 PHY-to-SMT services .. 11 Facilitie: 14 Coding. 7.1 14 7.2 Symbol set 14 7.3 16 Line states. 18 Operation 8.1 Coding overview 18 8.2 General organization 19 8.3 Smoothing Function 23 ISO1989 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means,electronicorm nechanical, including photocopying and microfilm, without permission in writing from the publisher International Organization for Standardization Case postale 56 . CH-1211 Geneve 20 Switzerland Printed in Switzerland Copyright International Organization for Standardization Not for Resale ISO 9314-1 : 1989 (E) 8.4 Repeat Filter 26 8.5 Ring iatency 27 Tables Table 1 Symbol coding Figures Figure 1 FDDlphysical connectionexample An example of a FDDI PHY functional block diagram Figure 2 29 Smoother state diagram. . . . . . . Figure3 30 Figure 4 Repeat filter state diagram . 31 Copyright International Organization for Standardization No reproductic Not for Resale