1、 SBus Chip and module interconnect busReference numberISO/IEC 15205:2000(E)IEEEStd 1496, 1993 EditionNational Standard of CanadaCAN/CSA-ISO/IEC 15205:02(ISO/IEC 15205:2000 / IEEE Std 1496, 1993)International Standard ISO/IEC 15205:2000 / IEEE Std 1496, 1993 (first edition, 2000-06) has been adoptedw
2、ithout modification (IDT) as CSA Standard CAN/CSA-ISO/IEC 15205:02, which has been approved as a NationalStandard of Canada by the Standards Council of Canada.ISBN 1-55324-888-0 December 2002The Canadian Standards Association (CSA), The Standards Council of Canada is theunder whose auspices this Nat
3、ional 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-for-prof
4、it, 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 means CSA s
5、tandards 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 organizations,
6、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 in their r
7、egulations, particularly has been approved by the Standards Council ofin the fields of health, safety, building and Canada and one which reflects a reasonableconstruction, and the environment. agreement among the views of a number of capableIndividuals, companies, and associations across individuals
8、 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 with rel
9、evant interests, as may be appropriateobjectives through sustaining memberships. The to the subject in hand. It normally is a standardmore than 7000 committee volunteers and the 2000 which is capable of making a significant and timelysustaining memberships together form CSAs total contribution to th
10、e 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 established
11、 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 of the acc
12、reditedintegrity 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 office an
13、d 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 countrie
14、s. 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 of Canada
15、open 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, write t
16、oCanadian 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 particular purpos
17、e.Registered trade-mark of Canadian Standards AssociationCAN/CSA-ISO/IEC 15205:02 SBus Chip and module interconnect busDecember 2002 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 15205:02SBus Chip and moduleinterconnect busCSA PrefaceStandards development within the Information Technology sect
18、or is harmonized with internationalstandards development. Through the CSA Technical Committee on Information Technology (TCIT),Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 onInformation Technology (ISO/IEC JTC1) for the Standards Council of Canada (
19、SCC), the ISO memberbody for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of theInternational Telecommunication Union (ITU), Canada participates in the International Telegraph andTelephone Consultative Committee (ITU-T).This International Standard was reviewed
20、by the CSA TCIT under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada. (Acommittee membership list is available on request from the CSA Project Manager.) From time to time,ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT
21、 will review these documents for approvaland publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update orcontact a CSA Sales representative. This Standard has been formally approved, without modification, bythe Technical Committee and has been approved as a Natio
22、nal Standard of Canada by the StandardsCouncil of Canada.December 2002 Canadian Standards Association 2002All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permissionof the publisher. ISO/IEC material is reprinted with permission. Where the w
23、ords “this International Standard” appearin the text, they should be interpreted as “this National Standard of Canada”. Inquiries regarding this National Standard of Canada should be addressed to Canadian Standards Association 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-
24、463-6727 416-747-4044www.csa.caINTERNATIONALSTANDARDISO/IEC15205IEEEStd 1496First edition2000-06SBus Chip and module interconnect busReference numberISO/IEC 15205:2000(E)IEEEStd 1496, 1993 EditionAbstract: An input/output expansion bus with a 32- or 64-bit width is described in this standard.The SBu
25、s is designed for systems requiring a small number expansion ports. SBus Cardsmay be connected to a standard Sbus Connector mounted on the motherboard. SBus Devicesmay also be attached to the SBus directly on the systems motherboard. The dimensions ofthe SBus Card are 83,8 mm by 146,7 mm, making the
26、 cards appropriate for small computersystems that make extensive use of highly integrated circuits. The SBus Cards are designedto be installed in a plane parallel to the systems motherboard as mezzanine cards. They aredesigned to provide connections for devices external to the computer system throug
27、h anexposed back panel. The form factor is useful in Futurebus+, VMEbus, desktop computers,and similar applications. The SBus has the capability of transferring data at rates up to168 Mbytes/s, depending on the implementation options selected.SBus Cards may either serve as Masters on the bus, provid
28、ing all virtual address informationas well as the data to be transferred, or they may serve as Slaves on the bus, providing datatransfer according to the requirements of some other SBus Master. The SBus Master for adata transfer is selected by an arbitration process managed by the single SBus Contro
29、ller onthe SBus. The SBus Controller provides a virtual to physical address translation service.Keywords: I/O bus, SBus, SBus Card, Standard for Boot Firmware.The Institute of Electrical and Electronics Engineers, Inc.345 East 47th Street, New York, NY 10017-2394, USACopyright 1993 by the Institute
30、of Electrical and Electronics Engineers, Inc.All rights reserved. First published in 1993.ISBN 2-8318-5165-3No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, withoutthe prior written permission of the publisher.INTERNATIONALSTANDARDISO/IEC1520
31、5IEEEStd 1496First edition2000-06SBus Chip and module interconnect busSponsorBus Architecture Standards Committeeof the IEEE Computer SocietyPRICE CODEXAFor price, see current catalogue 2 ISO/IEC 15205:2000(E)IEEE Std 1496, 1993 EditionCopyright 1993 IEEE. All rights reserved.CONTENTSPageFOREWORD 4I
32、NTRODUCTION 5Clause1 General 81.1 Scope and object 81.2 Normative references 82 Definitions, usage of special terms, acronyms, and editorial conventions . 92.1 Definitions 92.2 Usage of special terms . 132.3 Acronyms 132.4 Editorial conventions. 133 Overview 143.1 System overview. 143.2 Overview of
33、configurations 163.3 General design information . 193.4 Performance . 214 Signal definitions . 234.1 CLK signal 234.2 RST* signal 244.3 PA27:0 signals 254.4 SEL* signal. 254.5 AS* signal. 264.6 BR* signal. 264.7 BG* signal 264.8 D31:0, D63:0, and DP signals . 274.9 SIZ2:0 signals. 284.10 RD signal 2
34、84.11 ACK2:0* signals 294.12 LERR* signal 314.13 INT7:1* signals . 325 SBus cycle definitions 335.1 Arbitration Phase 335.2 Translation Phase. 345.3 Extended Transfer Information Phase . 365.4 Transfer Phase . 405.5 Dual function SBus Devices 585.6 Exception conditions. 595.7 Extended Transfer locki
35、ng protocol. 60ISO/IEC 15205:2000(E) 3 IEEE Std 1496, 1993 EditionCopyright 1993 IEEE. All rights reserved.Clause Page6 SBus electrical requirements 626.1 Power . 626.2 Electronic characteristics 636.3 Electronic timing requirements 666.4 Compliance requirements . 697 Environmental requirements. 697
36、.1 Operating range 698 Mechanical requirements . 708.1 SBus Slot Connector. 708.2 SBus Card 748.3 Panel installation 889 SBus program interface . 899.1 Introduction. 899.2 Program format and interpretation 899.3 Required FCode attributes 909.4 FCode language . 909.5 Special functions of Word 0 90Ann
37、ex A (informative) Compliance checklist 92Annex B (informative) Known implementation variations 97Bibliography 101Index . 102 4 ISO/IEC 15205:2000(E)IEEE Std 1496, 1993 EditionCopyright 1993 IEEE. All rights reserved.SBus CHIP AND MODULE INTERCONNECT BUSFOREWORD1) ISO (the International Organization
38、 for Standardization) and IEC (the International ElectrotechnicalCommission) form the specialized system for worldwide standardization. National bodies that are members ofISO or IEC participate in the development of International Standards through technical committees establishedby the respective or
39、ganization to deal with particular fields of technical activity. ISO and IEC technicalcommittees collaborate in fields of mutual interestOther international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work.2) In the field of information techno
40、logy, ISO and IEC have established a joint technical committee, ISO/IECJTC 1. Draft International Standards adopted by the joint technical committee are circulated to national bodiesfor voting. Publication as an International Standard requires approval by at least 75 % of the national bodiescasting
41、a vote.3) Attention is drawn to the possibility that some of the elements of this International Standard may be thesubject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.International Standard ISO/IEC 15205 was prepared by subcommittee 26: M
42、icroprocessorsystems, of ISO/IEC joint technical committee 1: Information technology.International Standards are drafted in accordance with ISO/IEC Directives, Part 3.Annexes A and B are for information only.This standard must be used in conjunction with the latest edition of the following standard:
43、IEEE Std 1275.International Electrotechnical Commission 3, rue de Varemb, PO Box 131,CH-1211-Geneva 20, Switzerland Telephone: +41 22 919 0211 Telefax: +41 22 919 0300 e-mail: inmailiec.ch URL: http:/www.iec.chISO/IEC 15205:2000(E) 5 IEEE Std 1496, 1993 EditionCopyright 1993 IEEE. All rights reserve
44、d.INTRODUCTION(This introduction is not a normative part of ISO/IEC 15205:2000, but is included forinformation only.)This IEEE standard documents the implementation of the popular SBus interface. The SBus,originally developed and documented by Sun Microsystems as an I/O expansion bus, uses astandard
45、 form factor SBus Card that is a suitable size for the use of VLSI circuits in smallcomputers. It has a high bandwidth and is capable of data transfer 8, 16, 32, or 64 bits inwidth. This standard includes the set of functionality originally documented by the SBusSpecification B.0 (Sun Microsystems P
46、art #800.5922-10, Revision A, December 1990) andclarifies, corrects, and extends that functionality as required. The IEEE P1275 Working Groupis developing a standard for boot firmware, which will define and document the initializationand boot interface for SBus Cards.Special thanks are due to Bob Sn
47、ively (P1496 Working Group draft technical editor) for themany hours spent in converting this document from the original SBus Specification B.0 andediting it into its final form. Also deserving of thanks are Jim Lyle (P1496 Working Group viceChair), Barbara Vance (P1496 Working Group former Secretar
48、y), Bob Gianni (P1496 WorkingGroup Secretary), and Steve Hix (P1496 draft document editor) for their support in theCommittee work and the generation of this document.The following people were members of the P1496 Working Group that approved the draft forsubmission to IEEE for sponsor ballot:Wayne Fi
49、scher, ChairJames Lyle, Co-ChairRobert Gianni, SecretaryRobert Snively, Draft Technical EditorSanjay Adkar Steve Golson Elwood ParsonsSteven W. Aiken Anthony A. Goodloe Heinz PiorunneckRay S. Alderman James N. Hardage, Jr. Jack RegulaRavi Anantharaman Hans Heilborn Eayne RickardJames Antonellis Kai Holz Michael SaariTom Armbruster Timothy Hu Siamak SalimpourJon K. Bennett Mohammad Issa Gary SloaneC.J. Beynon Shinkyo Kaku Martin SodosPaul Borrill Kuljeet Kalkat Richard SprattMike Chastain Thomas Kappler Mike S
