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1、Errata for TIA/EIA-785 Errata to TIA/EIA-785 100 Mb/s Physical Layer Medium Dependent Sublayer and 10 Mb/s and 100 Mb/s Auto-Negotiation on 850 nm Fiber Optics i. INTRODUCTION The original publication of ANSYTIAEIA-785 contained requirements for both receiver bandwidth and receiver stressed receive
2、sensitivity. The inclusion of the receiver bandwidth specification was technically duplicative to the receiver stressed receive sensitivity and leads to unwarranted limitations in transceiver designs. This errata removes the requirements for receiver bandwidth from ANSI/TIA/EIA-785. Two errors relat
3、ed to the stressed receive sensitivity test specifications are also corrected. The BER specified in Table 4-2 Note 4 is aligned with the system BER, and a typo in the vertical eye closure penalty equation in Annex A is corrected. 2. PURPOSE AND SCOPE The purpose of this Errata is to remove Section 4
4、.3.2.8 “Receive electrical 3 dB upper cutoff frequency” and related references within ANSI/TIA/EIA-785-200 1, and to correct two errors related to the stressed receive sensitivity test specifications. 3. SUB-CLAUSE ADDENDUM 3.1 Delete sub-clause 4.3.2.8 and substitute: “4.3.2.8 Not Used.” 1 Copyrigh
5、t Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 03:09:09 MDTNo reproduction or networking permitted without license from IHS -,-,- Errata for TWEIA-785 3 . 2 Delete table 4.2 and substitut
6、e: Table 4-2 - Characteristics of active input interface Subclause Parameter Min. Max. Units 4.3.2 ACTIVE INPUT INTERFACE 4.3.2.1 Center Wavelength 4.3.2.2 4.3.2.3 Rise Time (10-90%) 4.3.2.3 Fall Time (10-90%) 4.3.2.4 Duty Cycle Distortion, peak-peak 4.3.2.5 4.3.2.6 4.3.2.7 Average Coupled Power (No
7、te 1) Data-Dependent Jitter, peak-peak (Note 2) Random Jitter, peak-peak (Note 3) Stressed receive sensitivity (Note 4) 800 900 -24.0 -12 O 7.3 O 7.3 O 1.5 O 1.1 O 1 .O4 -24.55 NA nm dBm ns ns ns ns ns dBm NOTES Average coupled optical output power, rise time, fall time, and jitter (DCD, DDJ, and RJ
8、) shall be measured at the output end of the fiber optic cabling used in the channel (see FDDI PMD annex B). The output end is defined as the end that connects to the receiver. The data pattern for this measurement shall be a stream of Halt symbols. (Fast Ethernet /H/ code-groups) Refer to normative
9、 annex A for additional details and alternative test methods. Data-dependent jitter is specified for the test data pattern specified in FDDI PMD annex A. Annex A also provides possible test methods. Random jitter is s ecified as the peak-peak value where the probability of exceeding that value is eq
10、ual to 2.5 x IO-. For a Gaussian probability distribution, the resulting peak-peak value is equal to 12.6 times the rms value. Stressed receive sensitivitv is measured with a conformance test simal for BER= 2.5 x IO- at the eye center, as specified in-Annex A of this Standard. I 3.3 In Annex A, dele
11、te: “Vertical eye-closure penalty = 10 log (Ao / AI) dB” and substitute: “Vertical eye-closure penalty = 1 O * log (Ao / AI) dB.” 2 Copyright Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007
12、03:09:09 MDTNo reproduction or networking permitted without license from IHS -,-,- TIA/EIA STANDARD ANSI/TIA/EIA-785-2001 Approved: May 24, 2001 100 Mb/s Physical Layer Medium Dependent Sublayer and 10 Mb/s Auto-Negotiation on 850 nrn F ib er Optics T I A/E IA- 7 8 5 MAY 200 1 TELECOMMUNICATIONS IND
13、USTRY ASSOCIATION Tlie Telecoininiiiiicatioiis Industry Association Represents the Coininiiiiicatioiis Sector of Copyright Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 03:09:09 MDTNo repr
14、oduction or networking permitted without license from IHS -,-,- NOTICE T M I A Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandmgs between manufacturers and purchasers, facilitating interchangeability and improvement of products, and
15、assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any respect preclude any member or nonmember of TIA/EIA from manufacturing or selling products not codorming to such Standards a
16、nd Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than TIA/EIA members, whether the standard is to be used either domestically or internationally. Standards and Publications are adopted by TIA/EIA in accordance with the American N
17、ational Standards Institute (ANSI) patent policy. By such actio% T M I A does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. This Standard does not purport to address all safety problems associated with its us
18、e or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal Nos. 4360 -B and 4360-B- 1, formulated under t
19、he cognizance of the TIA FO-2.2 Subcommittee on Diatal Multimode Systems) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 200 1 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 2220 1 PRICE: Please refer to current Catalog of EIA ELECTRONIC INDUSTRIES ALLIANCE STANDARDS a
20、nd ENGINEERING PUBLICATIONS or call Global Engineering Documents, USA and Canada (1-800-854-7179) International (303-397-7956) All rights reserved Printed in U.S.A. Copyright Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees/1111111001, User=Wing, B
21、ernie Not for Resale, 03/29/2007 03:09:09 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 03:09:09 MDTNo r
22、eproduction or networking permitted without license from IHS -,-,- Copyright Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 03:09:09 MDTNo reproduction or networking permitted without licen
23、se from IHS -,-,- TIAAZIA-785 100 Mb/s Physical Layer Medium Dependent Sublayer and 10 Mb/s and 100 Mb/s Auto-Negotiation on 850 nm Fiber Optics Contents Page 1 INTRODUCTION . 1 1.1 General . 1 2 GENERAL, . 2 2.1 Scope . 2 2.2 Normative References . 2 3 DEFINITIONS, ACRONYMS, AND ABBREVIATIONS . 3 3
24、.1 Definitions . 3 3.2 Abbreviations 6 4.1 Functional specifications 7 4.3 Specific requirements and exceptions . 7 Active output interface parameters . 7 4.3.1 1 Center wavelength 7 4.3.1.3 Optical transmit average power range 8 4.3.1.4 Optical transmit pulse rise and fall times . 8 4.3.1.5 Optical
25、 transmit pulse duty cycle distortion . 8 4.3.1.6 Optical transmit pulse data-dependent jitter 8 4.3.1 . 8 Optical transmit extinction ratio 8 4.3.1.9 Optical transmit pulse envelope . 8 1.2 Purpose 1 4 PHYSICAL MEDIUM DEPENDENT (PMD) SUBLAYER TYPE 100BASE-SX . 7 4.2 General exceptions 7 4.3.1 . 4.3
26、.1.2 Spectral width . 8 4.3.1.7 Optical transmit pulse random jitter 8 Active input interface parameters . 10 4.3.2.1 Center wavelength 10 4.3.2.2 Optical receive average power range . 10 4.3.2.3 Optical receive pulse rise and fall times 10 4.3.2.4 Optical receive duty cycle distortion 11 4.3.2.5 Op
27、tical receive data-dependent jitter . 11 4.3.2.6 Optical receive random jitter 11 4.3.2.7 Stressed receive sensitivity . 11 4.3.2.8 Receive electrical 3 dB upper cutoff fiequency . 11 Characteristics of the fiber optic medium 12 4.3.3.1 Optical fiber and cable 12 4.3.2 . . . 4.3.3 4.3.3.2 Fiber Opti
28、c Medium Dependent Interface (FOMDI) 13 i Copyright Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 03:09:09 MDTNo reproduction or networking permitted without license from IHS -,-,- TIMEIA-
29、 7 8 5 4.3.3.3 Crossover function 14 4.3.4 Labeling ReqUiremen 14 10 Mb/S, 100 Mb/S, AND AUTO-NEGOTIATION 15 5.1.1 Objectives 18 5.1.2 Application . 18 5.1.3 Management . 19 5 MEDIA CONVERSION SUBLAYER FOR FIBER OPTIC AND TWISTED PAIR 5.1 Overview 15 5.2 Media Conversion 20 1OBASE-T to 1OBASE-FL Con
30、version 20 5.2.1.1 Twisted Pair to Fiber Optic Conversion . 20 5.2.1 5.2.1.2 Fiber Optic to Twisted Pair Conversion 20 5.2.2 1 OOBASE-TX to 1 OOBASE-SX Conversion . 21 5.2.2.2 Fiber Optic to Twisted Pair Conversion . 21 5.3 Negotiation Pulse Conversion . 21 5.3.1 Fiber Link Negotiation Pulse (FLNP)
31、Bursts . 21 5.3.2 Conversion Between FLPs and FLNPs . 23 5.4 LinkMonitor Functions . 23 Link Transmit Control . 24 5.6 State Diagrams 25 Annex A (normative) Stressed Receive Sensitivity Testing 31 Annex B (dormative) Testing Methods and Considerations . 33 B . 1 Testing for t o t a l jitter 33 B.2 R
32、andom Jitter 33 B.4 Explanation of Jitter Budget Derivation . 33 5.2.2.1 Twisted Pair to Fiber Optic Conversion 21 . . 5.5 B.3 Data Dependent Jitter 33 B.5 Stressed Receive Sensitivity . 35 Copyright Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees
33、/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 03:09:09 MDTNo reproduction or networking permitted without license from IHS -,-,- TIAAZIA-785 This page left blank. . l l l Copyright Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees/111111
34、1001, User=Wing, Bernie Not for Resale, 03/29/2007 03:09:09 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/200
35、7 03:09:09 MDTNo reproduction or networking permitted without license from IHS -,-,- TIAAZIA-785 100 Mb/s Physical Layer Medium Dependent Sublayer and 10 Mb/s and 100 Mb/s Auto-Negotiation on 850 nm Fiber Optics 1 INTRODUCTION 1.1 General This standard defines a migation path from 10 Mb/s fiber opti
36、c Ethernet compatible applications to 100 Mb/s Fast Ethernet compatible applications using short wavelength (850 nm) signaling. 10BASE-FL, as defined in IEEE Std. 802.3-1998, provides the specifications for 10 Mb/s Ethernet compatible applications using 850 nm wavelength signaling over glass fiber.
37、Within the IEEE Std.802.3-1998, 100BASE-FX provides the specifications for 100 Mb/s Fast Ethernet compatible applications using 1300 nm wavelength signaling over glass fiber. This standard provides for the expansion of a 10 Mb/s system to enable 100 Mb/s operation using a common wavelength, thus ena
38、bling interoperability. 1.2 Purpose The purpose and intent of this Standard is to provide a clear, simple, and inexpensive upgrade path from 10 Mb/s fiber optic Ethernet compatible applications to 100 Mb/s Fast Ethernet compatible applications using short wavelength (850 nm). This Standard outlines
39、a method for translating between twisted pair media dependent signaling and fiber optic media dependent signaling for 10 Mb/s, 100 Mb/s, and Auto-Negotiation. The PMD characteristics are outlined in clause 4 of this Standard, with other references listed in clause 2, and the functional characteristi
40、cs are outlined in clause 5 of this Standard. 1 Copyright Telecommunications Industry Association Provided by IHS under license with EIALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 03:09:09 MDTNo reproduction or networking permitted without license from IHS -,-,- T
41、MEIA- 7 8 5 2 GENERAL 2.1 Scope This Standard specifies the 100BASE-X PMD (including MDI) and fiber optic medium for a short wavelength, multimode fiber, 100BASE-SX. In order to form a complete 100BASE-SX Physical Layer it shall be integrated with the 100BASE-X PCS and PMA in accordance with clause
42、24 of IEEE Std. 802.3-1998, which is assumed incorporated by reference. As such, the 100BASE-SX PMD shall comply with the PMD service interface according to clause 24.4.1 of IEEE Std. 802.3- 1998. This Standard also specifies the Media Conversion Sublayer, which extends the Auto-Negotiation function
43、 defined in IEEE Std. 802.3-1998 to fiber optic media. With the introduction of the Media Conversion Sublayer, devices sharing a fiber optic link segment can configure automatically to take advantage of their full capabilities. By exchanging information during an initialization phase, the link partn
44、ers determine the operational capabilities of each other, and choose one based on a priority resolution function defined in this Standard. The supported management capabilities allow enabling and disabling the Auto-Negotiation function. It also forces a specific operational data rate and duplex mode
45、. The Media Conversion Sublayer extends the Parallel Detection function to the fiber optic environment. The Parallel Detection function allows for the recognition of 10BASE-FL and 100BASE-SX compatible devices, even when those devices do not include the Auto-Negotiation function. This Standard is in
46、tended for LED based systems only. 2.2 Normative References The following standards contain provisions that, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision; parties to agreem
47、ents based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated. ANSI and TIA maintain registers of currently valid national standards published by them. ANSI X3.237-1995, Revision 2.1 (1 January 1995), FDDI Low-Cost Fibre Phy
48、sical Layer-Medium Dependent (LCF-PMD) (ISO/IEC CD 93 14-9) ANSI X3.263-1995, Revision 2.2 (1 March 1995), FDDI Twisted Pair-Physical Medium Dependent (TP-PMD) (ISO/IEC CD 93 14-10). ANSVTIA!EIA-455-50B: 1998, Light Launch Conditions for Long-Length Graded- Index Optical Fiber Spectral Attenuation Measurements ANSVTMEIA-492-AAAA-A: 1998, Detail Specification for 62.5-pn Core Diametedl25-pn Cladding Diame