ANSI INCITS 296-1997 Information Technology - Single-Byte Command Code Sets Connection (SBCON) Architecture.pdf
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1、I ANSI INCITS 296-1 997 (R2002) (formerly ANSI X3.296-1997) for Information Technology - Single-Byte Command Code Sets CONnection (SBCON) Architecturt ? Developed by Where IT all begins ANSI X3.296-1997 American National Standard for Information Technology - Sngle-Byte Command Code Sets CON nection
2、(SBCON) Architect u re Secretariat Information Technology Industry Council Approved March 12, 1997 American National Standards Institute, Inc. Abstract This standard describes an input/output (/O) and interconnection architecture including specification of fiber optic links, switched point-to-point
3、topology, and /O protocols for high bandwidth, high perfor- mance and long distance information exchange. Approval of an American National Standard requires review by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Cons
4、ensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and o
5、bjections be considered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or u
6、sing products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an inter
7、pretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or
8、 withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American
9、National Standards Institute. American National CAUTION: The developers of this standard have requested that holders of patents that may be required for the implementation of the standard disclose such patents to the publisher. However, neither the developers nor the publisher have undertaken a pate
10、nt search in order to identify which, if any, patents may apply to this standard. As of the date of publication of this standard, following calls for the identification of patents that may be required for the implementation of the standard, notice of one or more such claims has been received. By pub
11、lication of this standard, no position is taken with respect to the validity of this claim or of any rights in connection therewith. The known patent holder(s) has (have), however, filed a statement of willingness to grant a license under these rights on reasonable and nondiscriminatory terms and co
12、nditions to applicants desiring to obtain such a license. Details may be obtained from the publisher. No further patent search is conducted by the developer or publisher in respect to any standard it processes. No representation is made or implied that this is the only license that may be required t
13、o avoid infringement in the use of this standard. Published by American National Standards Institute 11 West 42nd Street, New York, New York 10036 Copyright O1 997 by Information Technology Industry Council (ITI) All rights reserved. No part of this publication may be reproduced in any form, in an e
14、lectronic retrieval system or otherwise, without prior written permission of ITI, 1250 Eye Street NW, Washington, DC 20005. Printed in the United States of America Contents Page Foreword . Introduction . xv 1 Scope . 1 2.1 Approved references . 1 2 Normative references . 1 2.2 Other References 3 3 D
15、efinitions and conventions . 3 3.1 Definitions 3 3.2 Editorial conventions 10 3.2.1 Binary notation 11 3.2.2 Hexadecimal notation 11 Abbreviations, acronyms and symbols 11 3.3.1 Acronyms and other abbreviations 11 3.3.2 Symbols 12 4 I/O interface overview . 13 4.1 Channel-path elements . 13 4.1.1 Ch
16、annel 13 4.1.3 Control unit . 14 4.1.4 Dynamic switch 14 4.1.5 pynamic-switch control unit . 15 4.1.6 Link-level facility 16 4.2 Channel-path configurations 16 4.2.1 Point-to-point configuration . 16 4.2.2 Switched-point-to-point configuration 17 4.2.3 Physical path . 18 4.2.4 Logical path . 18 4.3
17、Information formats . 19 4.4 Protocols 19 4.4.1 Link-level . 20 4.4.2 Device-level . 21 4.4.3 Addressing 21 5 SBCON physical layer definition 23 5.1 Physical interface . 23 5.1.1 Fiber optic information transfer . 23 5.1.2 Data transmission : 24 5.1.3 Link, trunk cable, and jumper cable specificatio
18、ns 24 5.2 Multimode physical layer . 24 5.2.1 Multimode output interface 25 5.2.2 Multimode input interface 25 5.2.3 Multimode link specifications . 25 5.2.4 62.5 prn multimode cable specifications . 25 5.2.4.1 62.5 pm multimode trunk cable optical specifications 25 5.2.4.2 62.5 prn multimode duplex
19、 jumper cable specifications . 27 5.2.5 50 prn multimode trunk cable optical specifications . 27 3.3 4.1.2 Link . 13 i Page 5.2.6 5.2.7 5.3.1 5.3.2 5.3.3 5.3.4 Multimode duplex connector 28 Multimode duplex receptacle . 28 Single-mode physical layer 28 Single-mode output interface . 28 Single-mode i
20、nput interface . 30 Single-mode link specifications 30 Single-mode cable specifications 30 Single-mode trunk cable optical specifications . 30 Single-mode duplex jumper cable specifications 30 5.3.5 Single-mode connector 30 5.3.6 Class 1 laser safety 30 5.4 Bit-error-rate thresholding 30 5.4.1 Types
21、 of link errors caused by bit errors 32 5.4.2 Error bursts 32 5.4.3 Bit-error-rate-thresholding measurement 32 6 Transmission code 33 6.1 Notation conventions 33 6.2 8B/1 OB transmission code 34 6.2.1 Transmission order 34 6.2.2 Valid and invalid transmission characters 34 5.3 5.3.4.1 5.3.4.2 6.2.2.
22、1 6.2.2.2 Generating transmission characters . 35 Checking the validity of received transmission characters 35 6.3 Special character combinations 39 7 Link transmission and reception characteristics . 40 7.1.1 Conditions that cause loss of synchronization . 40 7.1.1.2 Transition to power on . 41 7.1
23、.1.3 7.1.2 Acquisition of synchronization . 41 7.1.3 7.2 Idle character 42 7.4 Sequence transmission and reception . 43 7.4.1 Sequence reception . 43 7.1 Synchronization 40 7.1.1.1 Loss-of-synchronization procedure . 40 Detection of loss of signal . 41 Synchronization state diagram 42 7.3 Ordered-se
24、t reception 42 7.4.2 Not-operational sequence 44 7.4.3 Unconditional-disconnect sequence 44 7.4.4 Unconditional-disconnect-response sequence 44 7.4.5 Offline sequence 44 8 Frame structure . 46 8.1 Link header . 47 8.1.1 Start-of-frame delimiter 47 8.1.2 Destination-address field . 47 8.1.2.1 Destina
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