1、 ANSI INCITS 263-1995 (S2010) (formerly INCITS 263-1995 (R2005) American National Standard for Information Technology Fibre Distributed Data Interface (FDDI) Token Ring Twisted Pair Physical Layer Medium Dependent (TP-PMD) ANSI INCITS 263-1995 (S2010) PDF disclaimer This PDF file may contain embedde
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5、tion Technology Standards) as an American National Standard. Date of ANSI Approval: 7/7/2010 Published by American National Standards Institute, 25 West 43rd Street, New York, New York 10036 Copyright 2010 by Information Technology Industry Council (ITI). All rights reserved. These materials are sub
6、ject to copyright claims of International Standardization Organization (ISO), International Electrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technology Industry Council (ITI). Not for resale. No part of this publication may be reproduced in any form, i
7、ncluding an electronic retrieval system, without the prior written permission of ITI. All requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW, Washington, DC 20005. Printed in the United States of America ii ITIC 2010 All rights reserved iForeword.iii1 Scope 12 Normat
8、ive references .23 Definitions34 Conventions and abbreviations .54.1 Conventions54.2 Abbreviations65 General description 75.1 Ring overview .75.2 Environment .96 Services .116.1 TP-PMD-to-PHY services 116.2 TP-PMD-to-SMT services147 Media independent operations 167.1 Transmit function 177.2 Receive
9、function .208 Media interface connector specifications.238.1 Media interface connectors .248.2 Testing recommendations .278.3 Station labeling .278.4 Isolation requirements.279 Media signal interface.289.1 Active Output Interface289.2 Active Input Interface specifications 3110 Interface signals .331
10、0.1 Receiver .3310.2 Transmitter .3611 Cable plant interface specification 3611.1 Cable plant specification .3611.2 Crossover function 3811.3 Connectors, cords, and cross-connect equipment.38Tables1 UTP-MIC contact assignments242 STP-MIC contact assignments 263 Twisted Pair Active Output Interface c
11、haracteristics 314 Signal_Detect summary .35Figures1 FDDI links and connections 7ContentsPageii2 FDDI topology example 83 FDDI representative distribution environment example 104 Dual attachment TP-PMD services125 TP-PMD functions 166 Encoder state diagram197 Decoder state diagram218 Example of a UT
12、P-MIC receptacle 249 Example of a UTP-MIC plug2510 Example of a STP-MIC receptacle 2611 Example of a STP-MIC plug2612 Active output interface overshoot 2913 Inductance measurement technique3014 Active output interface duty cycle distortion.3115 Differential input signals .3216 Common mode rejection
13、.3317 Signal_Detect assertion threshold.3418 Signal_Detect threshold and timing.3519 Mask of permitted cable plant reference insertion loss and reference crosstalk attenuation 37AnnexesA Test procedures .39B Electrical interface considerations.48C Example of system jitter allocation 50D Labeling con
14、siderations 52E Alternative cable plant usage54F Impedance and insertion loss deviation.55G Stream cipher scrambling function 56H Equipment cabling in a structured cabling context .64I Common mode cable termination65J Twisted Pair Active Output Interface template .67K Bibliography .68PageiiiThe Fibr
15、e Distributed Data Interface (FDDI) is intended for use in a high-performance general purpose multi-station network and is designed forefficient operation with a peak data rate of 100 Mbit/s. It uses a TokenRing architecture with optical fibre as the primary transmission medium.FDDI provides for hun
16、dreds of stations operating over an extent of tens ofkilometers.The FDDI Token ring twisted pair physical layer medium dependent (TP-PMD) standard specifies the lower sublayer of the Physical Layer for FDDIfor operation on twisted pair cables. As such it specifies the power levelsand characteristics
17、 of the transmitter and receiver, and the interface signalrequirements including jitter. TP-PMD also specifies the connector details,the requirements of conforming FDDI cable plants, and the permissible biterror rates. TP-PMD is designed to operate with one twisted pair in eachdirection.TP-PMD is on
18、e of a set of American National Standard alternative PMDsbeing developed, or already developed, for FDDI. This set includes theoriginal PMD for multimode fibre, the Single Mode Fibre PMD (SMF-PMD),and the Low Cost Fibre PMD (LCF-PMD).The set of FDDI standards, when completed, will include the follow
19、ingstandards:a) A FDDI PART: Token ring physical layer protocol (PHY), which speci-fies the upper sublayer of the physical layer for the FDDI, including thedata encode/decode, framing and clocking, as well as the elasticitybuffer, smoothing, and repeat filter functions;b) A FDDI PART: Token ring med
20、ia access control (MAC),which speci-fies the lower sublayer of the data link layer for FDDI, including theaccess to the medium, addressing, data checking, and data framing;c) A FDDI PART: Token ring station management (SMT), which speci-fies the local portion of the system management application pro
21、cess forFDDI, including the control required for proper operation of a station inan FDDI ring.American National Standards for FDDI MAC (ANSI X3.139-1987), FDDIPHY (ANSI X3.148-1988), and FDDI PMD (ANSI X3.166-1990) have beenapproved and published. In addition, FDDI standards are being processedas In
22、ternational Standards by standards committee ISO/IEC JTC 1/SC 25.International standards for FDDI PHY, FDDI MAC, and FDDI PMD (ISO9314-1:1989, 9314-2:1989 and ISO/IEC 9314-3:1990, respectively) havealso been published.An extension to the basic FDDI is now in the X3 approval process. Thestandard FDDI
23、 HRC, commonly known as FDDI-II, will extend the capabili-ty of FDDI to handle isochronous data streams at a multiplicity of datarates. A standard for an enhancement to MAC is in process. This standard will bereferred to as FDDI MAC-2 when it is necessary to distinguish it from theapproved FDDI MAC
24、standard ANSI X3.139-1988. Changes to be consid-ered for this update of the FDDI MAC standard include those identified infootnotes in the published standard on MAC as areas that the standardsForeword (This foreword is not part of American National Standard X3.263-1995.)ivcommittee intended to change
25、 as well as changes that may be required forany proposed extensions to FDDI, such as FDDI-II or MAC Bridging. Asimilar enhancement project is in process for the FDDI PHY standard. Thisstandard will be referred to as FDDI PHY-2.The text and format of this FDDI TP-PMD standard is based upon theInterna
26、tional FDDI PMD standard ISO/IEC 9314-3. As a consequence, cer-tain conventions, references, spelling, and units commonly used inInternational Standards have been used in this standard. These are differ-ent from those normally used in American National Standards, but are notexpected to cause difficu
27、lty in understanding or use.This standard contains 11 annexes. Annex A is normative and is consid-ered part of this standard. Annexes BK are for information only.Requests for interpretation, suggestions for improvement or addenda, ordefect reports are welcome. They should be sent to the ITI, 1250 Ey
28、eStreet, NW, Washington, DC 20005.This standard was processed and approved for submittal to ANSI by theAccredited Standards Committee on Information Technology, X3.Committee approval of this standard does not necessarily imply that allcommittee members voted for its approval. At the time it approved
29、 thisstandard, the X3 Committee had the following members:James D. Converse, ChairDonald C. Loughry, Vice-ChairJoanne Flanagan, SecretaryOrganization Represented Name of RepresentativeAmerican Nuclear SocietyGeraldine C. MainSally Hartzell (Alt.)AMP, Inc. Edward KellyCharles Brill (Alt.)Apple Comput
30、er, IncDavid K. MichaelAT2) 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 syn-chronization with the upstream code-bit data stream and decodes this incoming code-bit stre
31、am intoan equivalent symbol stream for use by the higher layers. PHY provides encoding and decodingbetween data and control indicator symbols and code bits, medium conditioning and initializing, thesynchronization of incoming and outgoing code-bit clocks, and the delineation of octet boundariesas re
32、quired for the transmission of information to or from higher layers. Information to be transmittedon the medium is encoded by the PHY using a group transmission code;b) a Data Link Layer (DLL), which is divided into two or more sublayers:1) An optional Hybrid Ring Control (HRC) (ISO/IEC 9314-5), whi
33、ch provides multiplexing ofpacket and circuit switched data on the shared FDDI medium. HRC comprises two internalcomponents, a Hybrid Multiplexer (H-MUX) and an Isochronous MAC (I-MAC). H-MUX main-tains a synchronous 125 m s cycle structure and multiplexes the packet and circuit switcheddata streams
34、, and I-MAC provides access to circuit switched channels;ANSI X3.263-199522) A Media Access Control (MAC) (ISO 9314-2), and its enhancement (MAC-2), which pro-vides fair and deterministic access to the medium, address recognition, and generation andverification of frame check sequences. Its primary
35、function is the delivery of packet data, in-cluding frame generation, repetition, and removal;3) An optional Logical Link Control (LLC), which provides a common protocol for any re-quired packet data adaptation services between MAC and the Network Layer. LLC is notspecified by FDDI;4) An optional Ci
36、rcuit Switching Multiplexer (CS-MUX), which provides a common protocolfor any required circuit data adaptation services between I-MAC and the Network Layer. CS-MUX is not specified by FDDI;c) a Station Management (SMT), which provides the control necessary at the node level to man-age the processes
37、under way in the various FDDI layers such that a node may work cooperativelyon a ring. SMT provides services such as control of configuration management, fault isolation andrecovery, and scheduling policies.FDDI TP-PMD is a supporting document to FDDI PHY and FDDI PHY-2 which should be read in conju
38、nc-tion with it. The FDDI SMT document should be read for information pertaining to supported FDDI nodeand network configurations.ISO/IEC 9314 specifies the interfaces, functions, and operations necessary to ensure interoperability be-tween conforming FDDI implementations. This standard provides a f
39、unctional description. Conformingimplementations may employ any design technique that does not violate interoperability.2 Normative referencesThe following standards contain provisions which, through reference in this text, constitute provisions ofthis standard. At the time of publication, the editi
40、ons indicated were valid. All standards are subject to re-vision, and parties to agreements based on standard are encouraged to investigate the possibility of ap-plying the most recent editions of the standards indicated below. Members of IEC and ISO maintain reg-isters of currently valid Internatio
41、nal Standards.ANSI/EIA/TIA 568-1991, Commercial building telecommunications wiring standardECMA 97: 1985, Local Area Networks Safety RequirementsEIA/TIA TSB 36, Technical systems bulletin additional cable specifications for unshielded twisted pair ca-bles, November 19911)EIA/TIA TSB 40, Technical sy
42、stems bulletin additional transmission specifications for unshielded twistedpair connecting hardware, 19921)EIA/TIA 574: 1990, 9 Position non-synchronous interface between data terminal equipment and data cir-cuit-terminating equipment employing serial binary data interchange1)IEC 60, High-voltage t
43、est techniques2)IEC 950: 1991, Safety of information technology equipment, including electrical business equipment2)ISO 8802-3: 1993, Information technology Local and metropolitan area networks Part 3: Carriersense multiple access with collision detection (CSMA/CD) access method and physical layer s
44、pecifica-tions2)1)Available from Global Engineering Documents, 15 Inverness Way East, Englewood, CO 80111-5704.2)Available from the American National Standards Institute, 11 West 42nd Street, New York, NY 10036.ANSI X3.263-19953ISO 8802-5: 1992, Information processing systems Local and metropolitan
45、area networks Part 5:Token ring access method and physical layer specifications2)ISO/IEC 8877:1992, Information technology Telecommunications and information exchange betweensystems Interface connector and contact assignments for ISDN Basic Access Interface located at refer-ence points S and T2)ISO
46、9314-1: 1989, Information processing systems Fibre Distributed Data Interface (FDDI) Part 1:Token Ring Physical Layer Protocol (PHY)2)ISO 9314-2: 1989, Information processing systems Fibre Distributed Data Interface (FDDI) Part 2:Token Ring Media Access Control (MAC)2)ISO/IEC 9314-3: 1990, Informati
47、on processing systems Fibre Distributed Data Interface (FDDI) Part3: Token Ring Physical Layer, Medium Dependent (PMD)2)ISO/IEC DIS 9314-6, Information processing systems Fibre Distributed Data Interface (FDDI) Part 6:Token Ring Physical Layer, Station Management (SMT)2)3 DefinitionsFor the purposes
48、 of this standard, the following definitions apply. Other parts of FDDI, e.g., MAC andPHY, may contain additional definitions of interest.3.1 baseline wander: Data dependent variations in the low frequency component of a signal.3.2 bypass: The ability of a station to isolate itself from the FDDI net
49、work while maintaining the continu-ity of the cable plant.3.3 code bit: The smallest signaling element used by the Physical Layer for transmission on the me-dium.3.4 concentrator: An FDDI node that has additional PHY/PMD entities beyond those required for itsown attachment to an FDDI network. These additional PHY/PMD entities are for the attachment of otherFDDI nodes (including other concentrators) in a tree topology.3.5 connector plug: A device used
