1、INTERNATIONAL STANDARD ISO/IEC 9314-9First edition 2000-06 Information technology Fibre Distributed Data Interface (FDDI) Part 9: Low-cost fibre physical layer medium dependent (LCF-PMD) Reference number ISO/IEC 9314-9:2000(E)INTERNATIONAL STANDARD ISO/IEC 9314-9First edition 2000-06 Information tec
2、hnology Fibre Distributed Data Interface (FDDI) Part 9: Low-cost fibre physical layer medium dependent (LCF-PMD) ISO/IEC 2000 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 ph
3、otocopying and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Office Case postale 56 CH-1211 Genve 20 Switzerland T PRICE CODE For price, see current catalogue 2 9314-9 ISO/IEC:2000(E) CONTENTS Page FOREWORD . 5 INTRODUCTION 6 Clause 1 Scope 7 2 Normative references.
4、8 3 Definitions 9 4 Conventions and abbreviations 13 4.1 Conventions 13 4.2 Abbreviations 13 5 General description 13 5.1 Ring Overview 13 5.2 Environment . 14 5.2.1 General. 14 5.2.2 Campus inter-building distribution environment. 15 5.2.3 Intra-building distribution environment. 15 5.2.4 Workstati
5、on distribution environment. 15 6 Services. 18 6.1 General. 18 6.2 LCF-PMDtoPHY services 18 6.2.1 Introduction. 18 6.2.2 PM_UNITDATA.request 18 6.2.3 PM_UNITDATA.indication . 20 6.2.4 PM_SIGNAL.indication 20 6.3 LCF-PMD-to-SMT services . 21 6.3.1 Introduction. 21 6.3.2 SM_PM_CONTROL.request 21 6.3.3
6、 SM_PM_BYPASS.request. 22 6.3.4 SM_PM_SIGNAL.indication. 22 7 Media interface connector specification 23 7.1 Introduction. 23 7.2 General information 23 7.2.1 Standardized connector 23 7.2.2 Testing recommendations . 23 7.2.3 Station labelling 23 7.3 LCF-MIC receptacle 23 7.4 LCF-MIC plug . 23 7.4.1
7、 LCF-MIC ferrule 249314-9 ISO/IEC:2000(E) 3 8 Media signal interface 24 8.1 General. 24 8.2 Active output interface 25 8.3 Active input interface 25 8.4 Station bypass interface 25 9 Interface signals 26 9.1 General. 26 9.2 Optical receiver. 26 9.2.1 Signal_Detect . 26 9.3 Optical transmitter 28 10
8、Cabling interface specification . 28 10.1 General. 28 10.2 Cabling specification. 28 10.2.1 Fibre types 28 10.2.2 Bandwidth and attenuation values. 28 10.3 Bypassing. 29 10.4 Connectors and splices. 29 Annex A (informative) Test methods. 30 A.1 General. 30 A.2 Active output interface 30 A.2.1 Optica
9、l power measurements 30 A.2.2 Optical spectrum measurements . 30 A.2.3 Rise/fall response time measurements 30 A.2.4 Jitter measurements 30 A.2.5 Extinction ratio 31 A.3 Active input interface 31 A.4 Distortion and jitter contributions. 31 A.5 Distortion and jitter measurements 32 A.5.1 DCD measurem
10、ents 32 A.5.2 RJ and DDJ measurements. 32 A.6 DDJ test pattern for jitter measurements. 34 Annex B (informative) Alternative cabling usage. 35 B.1 Alternative fibre sizes . 35 B.2 Connection losses 35 B.2.1 Loss budgets 35 B.2.2 Test specifications and procedure. 36 B.3 Optical bypass switches 36 An
11、nex C (informative) Electrical interface considerations . 37 Annex D (informative) Example of system jitter allocation. 39 D.1 Jitter sources 39 D.2 Jitter calculation example 39 4 9314-9 ISO/IEC:2000(E) Annex E (informative) LCF-MIC requirements and testing 41 E.1 Combined LCF-MIC mechanical-optica
12、l requirements . 41 E.2 LCF-MIC testing definitions and conditions . 41 E.3 LCF-MIC receptacle axial pull test 42 E.3.1 Purpose 42 E.3.2 Test method 42 E.4 LCF-MIC receptacle insertion/withdrawal force test. 42 E.4.1 Purpose 42 E.4.2 Test method 42 E.5 LCF-MIC receptacle optical repeatability test 4
13、2 E.5.1 Purpose 42 E.5.2 Test method 42 E.6 LCF-MIC receptacle optical cross plug repeatability test . 43 E.6.1 Purpose 43 E.6.2 Test method 43 E.7 LCF-MIC plug axial pull test 43 E.7.1 Purpose 43 E.7.2 Test method 43 E.8 LCF-MIC plug insertion/withdrawal force test 43 E.8.1 Purpose 43 E.8.2 Test me
14、thod 43 E.9 LCF-MIC plug off axis pull test 43 E.9.1 Purpose 43 E.9.2 Test method 43 E.10 Cable/LCF-MIC plug pull strength test 43 E.10.1 Purpose 43 E.10.2 Test method 44 Annex F (informative) Alternate Optical Interface Connector 45 Annex G (informative) Labelling considerations 46 G.1 General. 46
15、G.2 FDDI station labelling 46 Bibliography . 4893149 ISO/IEC:2000(E) 5 INFORMATIONTECHNOLOGY FIBREDISTRIBUTEDDATAINTERFACE(FDDI) Part9:Lowcostfibrephysicallayermediumdependent(LCFPMD) FOREWORD ISO(theInternationalOrganizationforStandardization)andIEC(theInternationalElectrotechnicalCommission) formt
16、hespecializedsystemforworldwidestandardization.NationalbodiesthataremembersofISOorIEC participateinthedevelopmentofInternationalStandardsthroughtechnicalcommitteesestablishedbythe respectiveorganizationtodealwithparticularfieldsoftechnicalactivity.ISOandIECtechnicalcommittees collaborateinfieldsofmu
17、tualinterest.Otherinternationalorganizations,governmentalandnongovernmental,in liaisonwithISOandIEC,alsotakepartinthework. Inthefieldofinformationtechnology,ISOandIEChaveestablishedajointtechnicalcommittee,ISO/IECJTC1. DraftInternationalStandardsadoptedbythejointtechnicalcommitteearecirculatedtonati
18、onalbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthenationalbodiescastingavote. AttentionisdrawntothepossibilitythatsomeoftheelementsofthisInternationalStandardmaybethesubjectof patentrights.ISOandIECshallnotbeheldresponsibleforidentifyinganyorallsuchpatentright
19、s. InternationalstandardISO/IEC93149waspreparedbysubcommittee25:Interconnectionof informationtechnologyequipment,ofISO/IECjointtechnicalcommittee1:Information technology. InternationalStandardsaredraftedinaccordancewiththeISO/IECDirectives,Part3. AnnexesA,B,C,D,E,FandGareforinformationonly. ISO/IEC9
20、314consistsofthefollowingparts,underthegeneraltitle Informationtechnology FibreDistributedDataInterface(FDDI): Part1:TokenRingPhysicalLayerProtocol(PHY) Part2:TokenRingMediaAccessControl(MAC) Part3:PhysicalLayerMediumDependent(PMD) Part4:SingleModeFibrePhysicalLayerMediumDependent(SMFPMD) Part5:Hybr
21、idRingControl(HRC) Part6:StationManagement(SMT) Part7:PhysicalLayerProtocol(PHY2) Part8:MediaAccessControl2(MAC2) Part13:ConformanceTestProtocolImplementationConformanceStatement(CTPICS) Proforma Part20:AbstractTestSuiteforFDDIPhysicalMediumDependentConformanceTesting (PMDATS) 1) Part21:AbstractTest
22、SuiteforFDDIPhysicalLayerProtocolConformanceTesting (PHYATS) 1) Part25:AbstracttestsuiteforFDDIStationManagementConformanceTesting(SMTATS) Part26:AbstractTestSuiteforFDDIMediaAccessControlConformanceTesting(MACATS) 1) _ 1) Tobepublished. 6 9314-9 ISO/IEC:2000(E) INTRODUCTION The Fibre Distributed Da
23、ta Interface (FDDI) is intended for use in a high-performance general purpose multi-station network and is designed for efficient operation with a peak data rate of 100 Mbit/s. It uses a Token Ring architecture with optical fibre as the primary transmission medium. FDDI provides for hundreds of stat
24、ions operating over an extent of tens of kilometers. The FDDI Part: Token ring low-cost physical layer medium dependent (LCF-PMD) standard specifies the lower sublayer of the Physical Layer for FDDI. As such it specifies the power levels and characteristics of the optical transmitter and receiver, a
25、nd the interface optical signal requirements including jitter. LCF-PMD also specifies the connector receptacle footprint, the requirements of conforming FDDI optical fibre cablings, and the permissible bit error rates. LCF-PMD is one of a set of alternative international standard PMDs for FDDI. This
26、 set includes the original PMD, the Single Mode Fibre PMD (SMF-PMD), and the Twisted-Pair PMD (TP-PMD). The set of FDDI standards includes the following standards: a) a FDDI Part: token ring physical layer protocol (PHY), which specifies the upper sublayer of the physical layer for the FDDI, includi
27、ng the data encode/decode, framing and clocking, as well as the elasticity buffer, smoothing, and repeat filter functions; b) a FDDI Part: token ring media access control (MAC), which specifies the lower sublayer of the data link layer for FDDI, including the access to the medium, addressing, data c
28、hecking, and data framing; c) a FDDI Part: token ring station management (SMT), which specifies the local portion of the system management application process for FDDI, including the control required for proper operation of a station in an FDDI ring.9314-9 ISO/IEC:2000(E) 7 INFORMATION TECHNOLOGY FI
29、BRE DISTRIBUTED DATA INTERFACE (FDDI) Part 9: Low-cost fibre physical layer medium dependent (LCF-PMD) 1 Scope This part of ISO/IEC 9314 specifies the requirements for the Fibre Distributed Data Interface (FDDI); token ring low-cost fibre physical layer medium dependent (LCF-PMD). FDDI provides a hi
30、gh-bandwidth (100 Mbit/s), general-purpose interconnection among computers and peripheral equipment using fibre optics as the primary transmission medium. FDDI can be configured to support a sustained data transfer rate of at least 80 Mbit/s (10 Mbyte/s). FDDI provides connectivity for many nodes di
31、stributed over distances of several kilometers in extent. Default values for FDDI are calculated on the basis of 1 000 physical links and a total fibre path length of 200 km (typically corresponding to 500 nodes and 100 km of dual fibre cable). FDDI consists of: a) a Physical Layer (PL), which is di
32、vided into two sublayers 1) A Physical Layer, Medium Dependent (PMD) sublayer (ISO/IEC 9314-3), with several alternative medium choices, which provides the digital baseband point-to-point communication between nodes in the FDDI network. The PMD provides all services necessary to transport a suitably
33、 coded digital bit stream from node to node. The PMD defines and characterizes the medium drivers and receivers, medium-dependent code requirements, cables, connectors, power budgets, optical bypass provisions, and physical-hardware-related characteristics. It specifies the point of interconnectabil
34、ity for conforming FDDI attachments. The original PMD standard (ISO/IEC 9314-3), called PMD, defines attachment to multi- mode fibre up to 2 km, while this LCF-PMD, optically interoperable with the original PMD, defines low-cost attachments to multi-mode fibre up to 500 m. Additional PMD sublayer st
35、andards are for attachment to single mode fibre (SMF-PMD), and twisted- pair up to 100 m (TP-PMD); 2) A Physical Layer Protocol (PHY) sublayer (ISO/IEC 9314-1), and its enhancement, (PHY-2), which provides connection between the PMD and the Data Link Layer. PHY establishes clock synchronization with
36、 the upstream code-bit data stream and decodes this incoming code-bit stream into an equivalent symbol stream for use by the higher layers. PHY provides encoding and decoding between data and control indicator symbols and code bits, medium conditioning and initializing, the synchronization of incomi
37、ng and outgoing code-bit clocks, and the delineation of octet boundaries as required for the transmission of information to or from higher layers. Information to be transmitted on the medium is encoded by the PHY using a group transmission code; b) a Data Link Layer (DLL), which is divided into two
38、or more sublayers 1) An optional Hybrid Ring Control (HRC) (ISO/IEC 9314-5), which provides multiplexing of packet and circuit switched data on the shared FDDI medium. HRC comprises two internal components, a Hybrid Multiplexer (H-MUX) and an Isochronous MAC (I-MAC). H-MUX maintains a synchronous 12
39、5 s cycle structure and multiplexes the packet and circuit switched data streams, and I-MAC provides access to circuit switched channels; 2) A Media Access Control (MAC) (ISO/IEC 9314-2), and its enhancement (MAC-2), which provides fair and deterministic access to the medium, address recognition, an
40、d generation and verification of frame check sequences. Its primary function is the delivery of packet data, including frame generation, repetition, and removal; 8 9314-9 ISO/IEC:2000(E) 3) An optional Logical Link Control (LLC), which provides a common protocol for any required packet data adaptati
41、on services between MAC and the Network Layer. LLC is not specified by FDDI; 4) An optional Circuit Switching Multiplexer (CS-MUX), which provides a common protocol for any required circuit data adaptation services between I-MAC and the Network Layer. CS-MUX is not specified by FDDI; c) a Station Ma
42、nagement (SMT), which provides the control necessary at the node level to manage the processes under way in the various FDDI layers such that a node may work cooperatively on a ring. SMT provides services such as control of configuration management, fault isolation and recovery, and scheduling polic
43、ies. FDDI LCF-PMD is a supporting document to FDDI PHY and FDDI PHY-2 which should be read in conjunction with it. The FDDI SMT document should be read for information pertaining to supported FDDI node and network configurations. The original FDDI PMD should be read for issues relating to FDDI LCF-P
44、MD to FDDI PMD optical interoperability. ISO/IEC 9314 specifies the interfaces, functions, and operations necessary to ensure interoperability between conforming FDDI implementations. This standard provides a functional description. Conforming implementations may employ any design technique that doe
45、s not violate interoperability. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO/IEC 9314. For dated references, subsequent amendments to, or revisions of, any of these publications do not app
46、ly. However, parties to agreements based on this part of ISO/IEC 9314 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IE
47、C and ISO maintain registers of currently valid International Standards. IEC 60793-1-1, Optical fibres Part 1-1: Generic specification General IEC 60793-1-2, Optical fibres Part 1: Generic specification Section 2: Measuring methods for dimensions IEC 60793-1-4, Optical fibres Part 1: Generic specifi
48、cation Section 4: Measuring methods for transmission and optical characteristics IEC 60793-2, Optical fibres Part 2: Product specifications IEC 60874-14, Connectors for optical fibres and cables Part 14: Sectional specification for fibre optic connector Type SC IEC 60874-19, Connectors for optical fibres and cables Part 19: Sectional specification for fibre optic connector Type SC-D(uplex) ISO/IEC 11801:
