1、Information technology Small computer system interface (SCSI)Part 113:Parallel Interface-3 (SPI-3)Reference numberISO/IEC 14776-113:2002(E)National Standard of CanadaCAN/CSA-ISO/IEC 14776-113:04(ISO/IEC 14776-113:2002)International Standard ISO/IEC 14776-113:2002 (first edition, 2002-08) has been ad
2、opted without modification(IDT) as CSA Standard CAN/CSA-ISO/IEC 14776-113:04, which has been approved as a National Standard of Canadaby the Standards Council of Canada.ISBN 1-55397-359-3 January 2004The Canadian Standards Association (CSA), The Standards Council of Canada is theunder whose auspices
3、 this National Standard has been coordinating body of the National Standards system, produced, was chartered in 1919 and accredited by a federation of independent, autonomousthe Standards Council of Canada to the National organizations working towards the furtherStandards system in 1973. It is a not
4、-for-profit, development and improvement of voluntarynonstatutory, voluntary membership association standardization in the national interest.engaged in standards development and certification The principal objects of the Council are to foster activities. and promote voluntary standardization as a me
5、ans CSA standards reflect a national consensus of of advancing the national economy, benefiting theproducers and users including manufacturers, health, safety, and welfare of the public, assisting consumers, retailers, unions and professional and protecting the consumer, facilitating domestic organi
6、zations, and governmental agencies. The and international trade, and furthering internationalstandards are used widely by industry and commerce cooperation in the field of standards.and often adopted by municipal, provincial, and A National Standard of Canada is a standard whichfederal governments i
7、n their regulations, particularly in has been approved by the Standards Council ofthe fields of health, safety, building and construction, Canada and one which reflects a reasonableand the environment. agreement among the views of a number of capableIndividuals, companies, and associations across in
8、dividuals whose collective interests provide to theCanada indicate their support for CSAs standards greatest practicable extent a balance ofdevelopment by volunteering their time and skills to representation of producers, users, consumers, andCSA Committee work and supporting the Associations others
9、 with relevant interests, as may be appropriateobjectives through sustaining memberships. The more to the subject in hand. It normally is a standardthan 7000 committee volunteers and the 2000 which is capable of making a significant and timelysustaining memberships together form CSAs total contribut
10、ion to the national interest.membership from which its Directors are chosen. Approval of a standard as a National Standard ofSustaining memberships represent a major source of Canada indicates that a standard conforms to theincome for CSAs standards development activities. criteria and procedures es
11、tablished by the StandardsThe Association offers certification and testing Council of Canada. Approval does not refer to theservices in support of and as an extension to its technical content of the standard; this remains thestandards development activities. To ensure the continuing responsibility o
12、f the accreditedintegrity of its certification process, the Association standards-development organization.regularly and continually audits and inspects products Those who have a need to apply standards arethat bear the CSA Mark. encouraged to use National Standards of CanadaIn addition to its head
13、office and laboratory complex whenever practicable. These standards are subject in Toronto, CSA has regional branch offices in major to periodic review; therefore, users are cautioned centres across Canada and inspection and testing to obtain the latest edition from the organizationagencies in eight
14、 countries. Since 1919, the preparing the standard.Association has developed the necessary expertise to The responsibility for approving National Standards meet its corporate mission: CSA is an independent of Canada rests with theservice organization whose mission is to provide an Standards Council
15、of Canadaopen and effective forum for activities facilitating the 270 Albert Street, Suite 200exchange of goods and services through the use of Ottawa, Ontario, K1P 6N7standards, certification and related services to meet Canadanational and international needs.For further information on CSA services
16、, write toCanadian Standards Association5060 Spectrum Way, Suite 100Mississauga, Ontario, L4W 5N6CanadaAlthough the intended primary application of this Standard is stated in its Scope, it is importantto note that it remains the responsibility of the users to judge its suitability for their particul
17、ar purpose.Registered trade-mark of Canadian Standards AssociationCAN/CSA-ISO/IEC 14776-113:04 interface (SCSI) Part 113: Parallel Interface-3 (SPI-3)Information technology Small computer systemJanuary 2004 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 14776-113:04Information technology Smallc
18、omputer system interface (SCSI) Part 113: Parallel Interface-3 (SPI-3)CSA PrefaceStandards development within the Information Technology sector is harmonized with internationalstandards development. Through the CSA Technical Committee on Information Technology (TCIT),Canadians serve as the Canadian
19、Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 onInformation Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO memberbody for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of theInternational Telecommunication Union (I
20、TU), Canada participates in the International Telegraph andTelephone Consultative Committee (ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada. (Acommittee member
21、ship list is available on request from the CSA Project Manager.) From time to time,ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approvaland publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update orcontact a CSA Sal
22、es representative. This Standard has been formally approved, without modification, bythe Technical Committee and has been approved as a National Standard of Canada by the StandardsCouncil of Canada.January 2004 Canadian Standards Association 2004All rights reserved. No part of this publication may b
23、e reproduced in any form whatsoever without the prior permission ofthe publisher. ISO/IEC material is reprinted with permission. Where the words “this International Standard” appear in thetext, they should be interpreted as “this National Standard of Canada”. Inquiries regarding this National Standa
24、rd of Canada should be addressed to Canadian Standards Association 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044www.csa.caThe following tradenames have been used in ISO/IEC 14776-113.Verilog is the tradename of a product supplied byIEEEIEEE Intellectu
25、al Property Right Office445 Hoes Lane P.O, Box 1331Piscataway, NJ 08855This information is given for the convenience of users of this document and does notconstitute an endorsement by IEC of this product. Equivalent descriptions may be used ifthey can be shown to lead to the same results.Teflon is t
26、he tradename of a product supplied byE.I. DuPont de Nemours and Company1007 Market StreetWilmington, DE 19898This information is given for the convenience of users of this document and does notconstitute an endorsement by IEC of this product. Equivalent descriptions may be used ifthey can be shown t
27、o lead to the same results.INTERNATIONALSTANDARDISO/IEC14776-113First edition2002-08Information technology Small computer system interface (SCSI)Part 113:Parallel Interface-3 (SPI-3)PRICE CODE ISO/IEC 2002All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
28、or utilized in any form or by anymeans, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher.ISO/IEC Copyright Office Case postale 56 CH-1211 Genve 20 SwitzerlandXFFor price, see current catalogue 2 14776-113 ISO/IEC:2002(E)CONTENTSFOREWORD
29、.17INTRODUCTION.181 Scope.192 Normative references .202.1 Normative references .202.2 Approved references 202.3 References under development 212.4 Other references.213 Definitions, symbols, abbreviations, and conventions .213.1 Definitions 213.2 Symbols and abbreviations .303.3 Keywords313.4 Convent
30、ions .323.5 Notation for Procedures and Functions .334 General 344.1 General overview344.2 Cables, Connectors, Signals, Transceivers.344.3 Physical architecture of bus344.4 Physical topology details and definitions.354.5 Bus loading.374.6 Termination requirements .384.7 SCSI device Addressing .384.8
31、 Data transfers.384.9 Data transfer modes .404.9.1 Data transfer modes overview .404.9.2 ST DATA phase parallel transfers .404.9.3 DT DATA phase parallel transfers .404.9.3.1 DT DATA phase parallel transfers format 404.9.3.2 Data group transfers .404.9.3.3 Information unit transfers 404.10 Protocol4
32、05 SCSI parallel interface connectors445.1 SCSI parallel interface connectors overview .445.2 Nonshielded connector .445.2.1 Nonshielded connector alternative 1 A cable 445.2.2 Nonshielded connector alternative 2 A cable 445.2.3 Nonshielded connector alternative 3 P cable 445.2.4 Nonshielded connect
33、or alternative 4455.3 Shielded connector.505.3.1 Shielded connector overview.505.3.2 Shielded connector alternative 1 A cable515.3.3 Shielded connector alternative 2 A cable515.3.4 Shielded connector alternative 3 P cable515.3.5 Shielded connector alternative 4 P cable5114776-113 ISO/IEC:2002(E) 3 5
34、.4 Connector contact assignments 595.4.1 Connector contact assignments overview595.4.2 SE assignments 605.4.3 Differential connector contact assignments .636 SCSI bus interconnect666.1 SCSI bus interconnect overview .666.2 SCSI bus cables .666.3 Interconnect characteristics for signals .676.3.1 Appl
35、icability of requirements for SCSI cable media676.3.2 Minimum conductor size for signals.676.3.3 Local transmission line impedance 676.3.4 Extended distance transmission line impedance686.3.5 Capacitance 686.3.6 SE propagation time and propagation time skew .686.3.7 Differential propagation time and
36、 propagation time skew.686.3.8 SE attenuation 686.3.9 Differential attenuation 696.3.10 Crosstalk.696.4 Decoupling characteristics for TERMPWR lines 696.5 Connection requirements for RESERVED lines.706.6 Cables used with SE transceivers.706.7 SE ground offset.706.8 Cables used with LVD transceivers.
37、716.9 LVD stub length and spacing 717 SCSI parallel interface electrical characteristics .727.1 SCSI parallel interface electrical characteristics overview.727.2 SE alternative.737.2.1 SE termination 737.2.2 SE output characteristics.737.2.3 SE input characteristics.767.2.4 SE input and output chara
38、cteristics .777.3 LVD alternative.787.3.1 LVD termination 787.3.2 LVD driver characteristics .827.3.3 LVD receiver characteristics837.3.4 LVD capacitive loads.837.3.4.1 Management of LVD release glitches 857.3.5 SE/HVD transmission mode detection .877.3.5.1 SE/HVD transmission mode detection overvie
39、w 877.3.5.2 LVD DIFFSENS driver.877.3.5.3 LVD DIFFSENS receiver .887.4 LVD/MSE multimode alternative907.4.1 LVD/MSE multimode termination .907.4.2 LVD/MSE multimode transceiver characteristics917.4.3 Transceiver ground drivers927.5 Terminator power 93 4 14776-113 ISO/IEC:2002(E)8 SCSI bus signals 95
40、8.1 SCSI bus signals overview958.2 Signal descriptions .958.3 Signal states.978.3.1 SE signals.978.3.2 LVD signals.978.4 OR-tied signals.988.5 Signal sources989 SCSI parallel bus timing .1009.1 SCSI parallel bus timing values 1009.2 Timing description 1039.2.1 Arbitration delay1039.2.2 ATN transmit
41、setup time1039.2.3 ATN receive setup time .1039.2.4 Bus clear delay .1039.2.5 Bus free delay.1039.2.6 Bus set delay 1039.2.7 Bus settle delay.1039.2.8 Cable skew .1039.2.9 pCRC receive hold time.1049.2.10 pCRC receive setup time.1049.2.11 pCRC transmit hold time .1049.2.12 pCRC transmit setup time .
42、1049.2.13 Data release delay 1049.2.14 DIFFSENS voltage filter time.1049.2.15 Physical disconnection delay.1049.2.16 Power on to selection1049.2.17 QAS arbitration delay 1049.2.18 QAS assertion delay1049.2.19 QAS release delay 1049.2.20 QAS non-DATA phase REQ (ACK) period .1059.2.21 Receive assertio
43、n period.1059.2.22 Receive hold time1059.2.23 Receive negation period1059.2.24 Receive setup time1059.2.25 Receive REQ (ACK) period tolerance1059.2.26 Receive REQ assertion period with P_CRCA transitioning.1059.2.27 Receive REQ negation period with P_CRCA transitioning .1059.2.28 REQ (ACK) period.10
44、69.2.29 Reset delay.1069.2.30 Reset hold time .1069.2.31 Reset to selection .1069.2.32 Selection abort time 1069.2.33 Selection time-out delay1069.2.34 Signal timing skew 1069.2.35 System deskew delay1069.2.36 Transmit assertion period10614776-113 ISO/IEC:2002(E) 5 9.2.37 Transmit hold time.1079.2.3
45、8 Transmit negation period.1079.2.39 Transmit setup time.1079.2.40 Transmit REQ (ACK) period tolerance.1079.2.41 Transmit REQ assertion period with P_CRCA transitioning1079.2.42 Transmit REQ negation period with P_CRCA transitioning 1079.3 Measurement points .1079.3.1 Measurement points overview .10
46、79.3.2 SE fast-5 and fast-10 measurement points 1079.3.3 SE fast-20 measurement points.1089.3.4 LVD measurement points 1099.4 Setup and hold timings .1129.4.1 ST data transfer calculations.1129.4.2 DT data transfer calculations.11310 SCSI bus phases11510.1 SCSI bus phases overview .11510.2 BUS FREE
47、phase .11510.3 Unexpected bus free phases.11510.4 Expected bus free phases.11610.5 Arbitration.11610.5.1 Arbitration and QAS overview11610.5.2 NORMAL ARBITRATION phase 11610.5.3 QAS protocol.11710.5.4 QAS phase11810.6 SELECTION phase.11910.6.1 Selection Overview .11910.6.2 Selection using attention
48、condition 11910.6.2.1 Information unit transfers disabled 11910.6.2.2 Information unit transfers enabled.11910.6.2.3 Selection using attention condition time-outprocedure .12010.6.3 Selection without using attention condition 12010.6.3.1 Information unit transfers disabled or enabled.12010.6.3.2 Sel
49、ection without using attention condition time-outprocedure .12010.7 RESELECTION phase 12110.7.1 RESELECTION phase overview 12110.7.2 Physical reconnection .12110.7.3 Physical reconnection time-out procedure .12210.8 Information transfer phases 12210.8.1 Information transfer phases overview 12210.8.2 Asynchronous information transfer 12310.8.3 Synchronous data transfer 12310.8.3.1 Synchronous data transfer overview12310.8.3.2 ST synchronous data transfer .12410.8.3.3 DT synchronous data transfer .12410.8.3.4 Wide data transfer.1
