《IEEE Std 1394-1998 P1394a Draft Standard for a High Performance Serial Bus.pdf》由会员分享，可在线阅读，更多相关《IEEE Std 1394-1998 P1394a Draft Standard for a High Performance Serial Bus.pdf（172页珍藏版）》请在三一文库上搜索。
1、P1394a Draft 2.0 March 15, 1998 P1394a Draft Standard for a High Performance Serial Bus (Supplement) Sponsor Microprocessor and Microcomputer Standards Committee of the IEEE Computer Society Not yet Approved by IEEE Standards Board Not yet Approved by American National Standards Institute Abstract:
2、Supplemental information for a high-speed serial bus that integrates well with most IEEE standard 32-bit and 64-bit parallel buses is specified. It is intended to extend the usefulness of a low-cost interconnect between external peripherals, IEEE Std 1394-1995. This standard follows the ISO/IEC 1321
3、3:1994 Command and Status Register (CSR) architecture. Keywords: bus, computers, high-speed serial bus, interconnect The Institute of Electrical And Electronics Engineers, Inc. 345 East 47th Street, New York, NY 10017-2394, USA Copyright 1997, 1998 by the Institute of Electrical And Electronics Engi
4、neers, Inc. All rights reserved. Published 1997. Printed in the United States of America. ISBN x-xxxxx-xxx-x This is an unapproved IEEE Standards Draft, subject to change. Permission is hereby granted for IEEE Standards Committee participants to reproduce this document for purposes of IEEE standardi
5、zation activities, including balloting and coordination. If this document is to be submitted to ISO or IEC, notification shall be given to the IEEE Copyright Administrator. Permission is also granted for member bodies and technical committees of ISO and IEC to reproduce this document for purposes of
6、 developing a national position. Other entities seeking permission to reproduce this document for these or other uses must contact the IEEE Standards Department for the appropriate license. Use of the information contained in this unapproved draft is at your own risk. iiThis is an unapproved standar
7、ds draft, subject to change 1997, 1998 IEEE IEEE Standards documents are developed within the IEEE Societies and the Standards Coordinating Committees of the IEEE Standards Board. Members of the committees serve voluntarily and without compensation. They are not necessarily members of the Institute.
8、 The standards developed within IEEE represent a consensus of the broad expertise on the subject within the Institute as well as those activities outside of IEEE that have expressed an interest in participating in the develop- ment of the standard. Use of an IEEE Standard is wholly voluntary. The ex
9、istence of an IEEE Standard does not imply that there are no other ways to produce, test, measure, purchase, market, or provide other goods and services related to the scope of the IEEE Standard. Furthermore, the viewpoint expressed at the time a standard is approved and issued is subject to change
10、brought about through developments in the state of the art and comments received from users of the standard. Every IEEE Standard is subjected to review at least every five years for revision or reaffirmation. When a document is more than five years old and has not been reaffirmed, it is reasonable t
11、o conclude that its contents, although still of some value, do not wholly reflect the present state of the art. Users are cautioned to check to determine that they have the latest edition of any IEEE Standard. Comments for revision of IEEE Standards are welcome from any interested party, regardless
12、of membership affiliation with IEEE. Suggestions for changes in documents should be in the form of a proposed change of text, together with appropriate supporting comments. Interpretations: Occasionally questions may arise regarding the meaning of portions of standards as they relate to specific app
13、lications. When the need for interpretations is brought to the attention of IEEE, the Institute will initiate action to prepare appropriate responses. Since IEEE Standards represent a consensus of all concerned interests, it is important to ensure that any interpretation has also received the concur
14、rence of a balance of interests. For this reason, IEEE and the members of its societ- ies and Standards Coordinating Committees are not able to provide an instant response to interpretation requests except in those cases where the matter has previously received formal consideration. Comments on stan
15、dards and requests for interpretations should be addressed to: Secretary, IEEE Standards Board 445 Hoes Lane P.O. Box 1331 Piscataway, NJ 08855-1331 USA Authorization to photocopy portions of any individual standard for internal or personal use is granted by the Institute of Elec- trical and Electro
16、nics Engineers, Inc., provided that the appropriate fee is paid to Copyright Clearance Center. To arrange for payment of licensing fee, please contact Copyright Clearance Center, Customer Service, 222 Rosewood Drive, Danvers, MA 01923 USA; (508) 750-8400. Permission to photocopy portions of any indi
17、vidual standard for educational classroom use can also be obtained through the Copyright Clearance Center. Note: Attention is called to the possibility that implementation of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is tak
18、en with respect to the existence or validity of any patent rights in connection therewith. The IEEE shall not be responsible for identifying all patents for which a license may be required by an IEEE standard or for conducting inquiries into the legal validity or scope of those patents that are brou
19、ght to its attention. 1997, 1998 IEEEThis is an unapproved standards draft, subject to changeiii Patent notice Note: Attention is called to the possibility that implementation of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is
20、 taken with respect to the existence or validity of any patent rights in connection therewith. The IEEE shall not be responsible for identifying all patents for which a license may be required by an IEEE standard or for conducting inquiries into the legal validity or scope of those patents that are
21、brought to its attention. The patent holder has, however, filed a statement of assurance that it will grant a license under these rights without com- pensation or under reasonable rates and nondiscriminatory, reasonable terms and conditions to all applicants desiring to obtain such a license. The IE
22、EE makes no representation as to the reasonableness of rates and/or terms and conditions of the license agreement offered by the patent holder. Contact information may be obtained from the IEEE Standards Depart- ment. Committee membership The following is a list of voting members of the IEEE P1394a
23、working group at the time of publication. Peter Johansson, Chair and Editor Prashant Kanhere, Secretary The following is a list of other major participants in the IEEE P1394a working group (those that attended at least 3 work- ing group meetings since its inception). The following persons served on
24、the ballot response committee: Richard Baker Steven Bard Max Bassler Joe Bennett Vilas Bhade Brad Bickford Charles Brill Mike Brown David Brunker Richard Churchill Dan Colegrove Claude Cruz Bill Duckwall Firooz Farhoomand Steve Finch Bill Frank John Fuller Eric Hannah Yasumasa Hasegawa Jerry Hauck J
25、ohn Hill Jack Hollins David Johnson Tom Jones Marcus Kellerman Al Kelley Mark Knecht David LaFollette Steven Larky Thang Le Robert Liu Hirokazu Mamezaki Takashi Matsui Keiji Miura Bill Northey Farrell Ostler James Piccione Bill Prouty David Scott John Smolka John Ta Ju-ching Tang Motoyasu Tsunoda Re
26、nard Ulrey Sushant Verman Colin Whitby-Strevens Paul Wiener David Wooten Roy Yasoshima Phil Young Michael Zarreii Peng Zhang Kazuyuki Abe Eric Anderson Oleg Awsienko Jim Busse Ed Butler Carissa Cheung Alistair Coles David Doman Jim Doyle Sagar Edara Mike Eneboe Lou Fasano Taka Fujimori James Gay Sre
27、ekanth Godey John Grant Shinichi Hatae Keith Heilman Burke Henehan Joe Herbst David Instone Diana Klashman Farrukh Latif Paul S. Levy Cyrus Momeni Neil Morrow Ganesh Murthy Karl Nakamura Takayuki Nyu Kugao Ouchi Bill Russell Bradley Saunders Hisato Shima James Skidmore Michael Sorna Peter Teng C. Br
28、endan Traw Tom Trodden Kent Waterson Lee Wilson Calto Wong Takao Yasuda Patrick Yu ivThis is an unapproved standards draft, subject to change 1997, 1998 IEEE The following persons were members of the balloting group: 1997, 1998 IEEEThis is an unapproved standards draft, subject to changev Contents 1
29、. Overview1 1.1 Scope1 1.2 Purpose.1 1.3 References 1 1.4 Document organization.2 1.5 Service model.2 1.6 Document notation3 2. Definitions and abbreviations.11 2.1 Conformance glossary 11 2.2 Technical glossary 11 3. New features (informative) 17 3.1 Connection debounce17 3.2 Cable arbitration enha
30、ncements17 3.3 Performance optimization via PHY “pinging”20 3.4 Priority arbitration21 3.5 Port disable, suspend and resume .22 4. Alternative cable media attachment specification25 4.1 Connectors25 4.2 Cables.31 4.3 Connector and cable assembly performance criteria.32 4.4 Signal propagation perform
31、ance criteria.40 5. PHY/Link interface specification.43 5.1 Initialization and reset 45 5.2 Link-on indication 48 5.3 Operation48 5.4 Link requests 49 5.5 Status55 5.6 Transmit56 5.7 Cancel.58 5.8 Receive.59 5.9 Electrical characteristics.60 6. PHY register map.69 6.1 PHY register map (cable environ
32、ment).69 6.2 PHY register map (backplane environment).74 6.3 Integrated link and PHY.75 7. Cable physical layer performance enhancement specifications77 7.1 Cable topology77 7.2 Port interface 78 7.3 Cable power and ground.79 7.4 Data signal rise and fall times.81 viThis is an unapproved standards d
33、raft, subject to change 1997, 1998 IEEE 7.5 Cable PHY packets.81 7.6 Cable PHY line states.88 7.7 Cable interface timing constants.89 7.8 Node variables92 7.9 Port variables93 7.10 Cable physical layer operation93 8. Asynchronous streams .129 8.1 Asynchronous stream packet format.130 8.2 Loose vs. s
34、trict isochronous131 9. Clarifications and corrigenda.133 9.1 Cycle start.133 9.2 Read response for data block133 9.3 Maximum isochronous data payload 134 9.4 Transaction codes (tcode).134 9.5 Response codes (rcode) 135 9.6 Tag136 9.7 Acknowledge codes (ack_code) .137 9.8 Priority arbitration for PH
35、Y packets and response packets.138 9.9 Transaction layer services.138 9.10 Serial Bus control request (SB_CONTROL.request)140 9.11 Serial Bus event indication (SB_EVENT.indication)140 9.12 NODE_IDS register140 9.13 SPLIT_TIMEOUT register.141 9.14 Command reset effects142 9.15 PRIORITY_BUDGET registe
36、r.142 9.16 NETWORK_CHANNELS register.144 9.17 Unit registers 144 9.18 Configuration ROM Bus_Info_Block.145 9.19 Node_Unique_ID146 9.20 Determination of the bus manager146 9.21 Gap count optimization.146 9.22 Automatic activation of the cycle master147 9.23 Abdication by the bus manager.147 9.24 Inte
37、rnal device physical interface .149 9.25 Transaction integrity safeguards.149 标准分享网 w w w .b z f x w .c o m 免费下载 1997, 1998 IEEEThis is an unapproved standards draft, subject to change1 P1394a Draft Standard for a High Performance Serial Bus (Supplement) 1. Overview 1.1 Scope This is a full-use stan
38、dard whose scope is to provide a supplement to IEEE Std 1394-1995 that defines or clarifies features and mechanisms that facilitate management of Serial Bus resources, at reconfiguration or during normal operation, and that defines alternate cables and connectors that may be needed for specialized a
39、pplications. The following are included in this supplement: a)Cables and connectors for a 4-pin variant (from the 6-pin already standardized); b)Standardization of the PHY/link interface, which at present is an informative annex to the existing standard; c)Performance enhancements to the PHY layer t
40、hat are interoperable with the existing standard, e.g., a method to shorten the arbitration delay when the last observed Serial Bus activity is an acknowledge packet; d)A redefinition of the isochronous data packet, transaction code A16, to permit its use in either the asynchronous or isochronous pe
41、riods; e)More stringent requirements on the power to be supplied by a cable power source and a clarification of electrical isolation requirements; f)Miscellaneous corrigenda to the existing standard. The preceding are arranged in no particular order. 1.2 Purpose Experience with Serial Bus has reveal
42、ed some areas in which additional features or improvements may result in better performance or usability. This supplement to IEEE Std 1394-1995 reflects their consideration by a variety of users and their refinement into generally useful facilities or features. 1.3 References This standard shall be
43、used in conjunction with the following publications. When the following publications are super- seded by an approved revision, the revision shall apply. ANSI/EIA-364-B-90, Electrical Connector Test Procedures Including Environmental Classifications.1 2This is an unapproved standards draft, subject t
44、o change 1997, 1998 IEEE High Performance Serial Bus (Supplement)P1394a Draft 2.0 March 15, 1998 IEEE Std 1394-1995, Standard for a High Performance Serial Bus ISO/IEC 9899: 1990, Programming languagesC.2 ISO/IEC 13213: 1994 ANSI/IEEE Std 1212, 1994 Edition, Information technologyMicroprocessor syst
45、emsControl and Status Registers (CSR) Architecture for microcomputer buses. This standard shall also be used in conjunction with the following publications under development. When approved as a standard, the approved version shall apply. IEEE P1394b, Draft Standard for a High Performance Serial Bus
46、(Supplement) IEC 61883/FDIS, Digital Interface for Consumer Electronic AV Equipment 1.4 Document organization This standard contains this overview, a list of definitions, an informative summary description, sections of technical spec- ification and application annexes. The new reader should read the
47、 informative summary and the sections that precede it before the remainder of the document. 1.5 Service model IEEE Std 1394-1995 and this supplement both use a protocol model with multiple layers. Each layer provides services to the next higher layer and to Serial Bus management. These services are
48、abstractions of a possible implementation; an actual implementation may be significantly different and still meet all the requirements. The method by which these services are communicated between the layers is not defined by this standard. Four types of service are defined by this standard: a)Reques
49、t service. A request service is a communication from a layer to an adjacent layer to request some action. A request may also communicate parameters that may or may not be associated with an action. A request may or may not be confirmed. A data transfer request usually triggers a corresponding indication on peer node(s). (Since broadcast addressing is supported on the Serial Bus, it is possible for the request to trigger a corresponding indication on multiple nodes.) b)Indication service. An indication service is a communication from a layer to an adjacent layer to indicate a c