ANSI INCITS TR-50-2014 Information Technology C Fibre Channel C Methodologies for Signal Quality Specification - 2 (FC-MSQS-2).pdf

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1、American National StandardDeveloped byINCITS Technical Reportfor Information Technology Fibre Channel Methodologies for Signal QualitySpecification - 2(FC-MSQS-2)INCITS TR-50-2014INCITSTR-50-2014INCITS TR-50-2014INCITS Technical Reportfor Information Technology Fibre Channel Methodologies for Signal

2、 QualitySpecification - 2(FC-MSQS-2)SecretariatInformation Technology Industry CouncilAbstractThis technical report compiles and provides additional information beyond that supplied in FC-MSQS.The technical report further clarifies jitter and signal quality specification clauses of relevant physical

3、 in-terfaces. The technical report focuses on FC-PI-6 signal characteristics and test methods. It specifiesbudget methods for equalized links and specifies and describes methods of measurement for links usinga reference receiver.This Technical Report is one in a series produced by the InternationalC

4、ommittee for Information Technology Standards (INCITS). The secretariatfor INCITS is held by the Information Technology Industry Council (ITI), 1101K Street, NW, Suite 610, Washington, DC 20005.As a by-product of the standards development process and the resources ofknowledge devoted to it, INCITS f

5、rom time to time produces TechnicalReports. Such Technical Reports are not standards, nor are they intended tobe used as such.INCITS Technical Reports are produced in some cases to disseminate thetechnical and logical concepts reflected in standards already published orunder development. In other ca

6、ses, they derive from studies in areas whereit is found premature to develop a standard due to a still-changing technologyor inappropriate to develop a rigorous standard due to the existence of anumber of viable options, the choice of which depends on the users particularrequirements.These Technical

7、 Reports, thus, provide guidelines, the use ofwhich can result in greater consistency and coherence of informationprocessing systems.When the draft Technical Report is completed, the Technical Committeeapproval process is the same as for a draft standard. Processing by INCITSis also similar to that

8、of a draft standard.INCITSTechnical ReportSeriesPublished byAmerican National Standards Institute, Inc.25 West 43rd Street, New York, NY 10036Copyright 2014 by Information Technology Industry Council (ITI)All rights reserved.No part of this publication may be reproduced in anyform, in an electronic

9、retrieval system or otherwise,without prior written permission of ITI, 1101 K Street NW, Suite 610,Washington, DC 20005. Printed in the United States of AmericaCAUTION: The developers of this Technical Report have requested that holders of patents thatmay be required for the implementation of the Te

10、chnical Report disclose such patents to the pub-lisher. However, neither the developers nor the publisher have undertaken a patent search in orderto identify which, if any, patents may apply to this Technical Report. As of the date of publication ofthis Technical Report, following calls for the iden

11、tification of patents that may be required for theimplementation of the standard, notice of one or more such claims has been received. By publica-tion of this Technical Report, no position is taken with respect to the validity of this claim or of anyrights in connection therewith. The known patent h

12、older(s) has (have), however, filed a statementof willingness to grant a license under these rights on reasonable and nondiscriminatory terms andconditions to applicants desiring to obtain such a license. Details may be obtained from the pub-lisher. No further patent search is conducted by the devel

13、oper or publisher in respect to any Tech-nical Report it processes. No representation is made or implied that this is the only license thatmay be required to avoid infringement in the use of this Technical Report.iContents1 Scope 12 References . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.2 Normative references . . . . . . . . . . . . . . . . . . .

15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.2.1 Approved references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.2.2 References under development . . . . . . . . . . . . . . . . . . . . . . . .

16、. . . . . . . . . . . . . . . . . . . . . . 22.3 Informative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Compliance test methodology for 32GFC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17、 . . . . . . . . . . 53.1 Test method general overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.2 Test point definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18、 . . 53.2.1 Host test points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.2.2 Module test points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.2.3 Module i

19、nput calibration points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.2.4 Host input calibration point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.3 Compliance boards for 32GFC . . . . . . .

20、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.3.1 Host Compliance Board and Module Compliance Board reference through response . . . . 83.3.2 Specification of mated Host and Module Compliance Boards . . . . . . . . . . . . . . . . . . . . . . 104 32GFC c

21、ompliance tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134.2 Compliance

22、test configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.2.1 Host output test configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.2.2 Host input test configuration . . . . .

23、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154.2.3 Module electrical output test configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164.2.4 Module electrical input stressed receiver test configuration . . . . . . . . .

24、. . . . . . . . . . . . . . . 184.2.5 Module optical output test configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.2.6 Module optical input stressed receiver test configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 214.2.7 Module optical in

25、put jitter tracking test configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224.2.8 Reference receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234.2.8.1 Reference clock recovery unit (CRU). . . . . . . . . . .

26、 . . . . . . . . . . . . . . . . . . . . . . . . . . 234.2.8.2 Reference continuous time linear equalizer (CTLE) . . . . . . . . . . . . . . . . . . . . . . . . . 234.2.9 Pattern generator configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254.2.10

27、 Frequency dependent attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274.3 Electrical compliance test methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284.3.1 Eye width EW6, eye height EH6, and modul

28、e output Vertical Eye Closure (VEC) . . . . . . 284.3.2 Electrical input stressed receiver test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294.3.3 Electrical input jitter tracking test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

29、. . . . . . 304.3.4 Crosstalk signal calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304.3.5 Common mode noise rms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304.4 Optical compliance

30、test methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314.4.1 Transmitter and Dispersion Penalty (TDP) for 3200-SM variants . . . . . . . . . . . . . . . . . . . 314.4.1.1 Reference transmitter requirements. . . . . . . . . . . . . . . . . . . . . .

31、 . . . . . . . . . . . . . . . . 314.4.1.2 Reference receiver requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314.4.2 VECPq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314.

32、4.3 Relative intensity noise RINxOMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314.4.4 Stressed receiver sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314.4.5 Unstressed receiver sensitivity . .

33、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334.4.6 Optical receiver jitter tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Annex A Reference receiver implementations . . . . . . . . . . . . . . . .

34、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35A.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35ii A.2 Clock recovery unit architectures . . . . . . . . . . . . . . . . . . . . . . .

35、 . . . . . . . . . . . . . . . . . . . . . . . . . . 35A.2.1 Golden PLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35A.2.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36、. . . . . . . . . . . . . . . . . 38A.2.2.1 PLL Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38A.2.2.2 PLL Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37、 . 38A.2.2.3 Jitter Transfer Function (JTF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38A.2.2.4 Observed Jitter Transfer Function (OJTF). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39A.2.2.5 Loop Bandwidth (LBW) . . . . . . . . . . . . .

38、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39A.2.2.6 PLL Peaking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39A.3 Continuous time linear equalizer (CTLE) . . . . . . . . . . . . . . . . . . . . . . . . . . .

39、 . . . . . . . . . . . . . . . . 39A.3.1 Sampling scope with open eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39A.3.2 Sampling scope with closed eye: hardware CTLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40A.3.3 Real-time scope

40、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41A.3.4 Sampling scope, closed eye, and parallel data channels . . . . . . . . . . . . . . . . . . . . . . . . . 41A.4 A comment on pattern lengths . . . . . . . . . . . . . . . . . . .

41、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Annex B Extending the Link Budget Spreadsheet Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45B.1 Scope and overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42、 . . . . . . . . . . . . . . . . . 45B.2 Composite optical link response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46B.2.1 Dominant power penalty is Pisi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

43、. 46B.2.2 Derivation of the unit pulse response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47B.2.3 Vertical eye closure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56B.2.4 TWDP unit pulse profile .

44、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59B.3 Linear equalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60B.3.1 3-tap feed forward equalizer (FFE) block dia

45、gram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60B.3.2 Unit pulse response with equalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60B.3.3 Tap setting policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

46、. . . . . . . . . . . . . . . . 61B.3.4 Eye diagrams and Pisi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64B.4 Laser relative intensity noise (RIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

47、 . 65B.4.1 Block diagram of the noise model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65B.4.2 Measures of noise statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68B.4.3 Noise frequency spectrum . .

48、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69B.4.3.1 Noise spectrum in the absence of an equalizer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69B.4.3.2 Noise spectrum with an equalizer . . . . . . . . . . . . . . . . . . . . . . . . .

49、. . . . . . . . . . . . . . 70B.4.4 RIN power penalty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71B.5 Noise impact on optimum equalizer tap weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72B.6 Mode partition noise (MPN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75B.6.1 Introduction to MPN concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75B.6.2 Chromatic dispersion . . .