1、 Information technology Small computer system interface (SCSI) Part 115: Parallel Interface-5 (SPI-5) Reference number ISO/IEC 14776-115:2004(E) National Standard of CanadaCAN/CSA-ISO/IEC 14776-115:05(ISO/IEC 14776-115:2004)International Standard ISO/IEC 14776-115:2004 (first edition, 2004-11) has b
2、een adopted withoutmodification (IDT) as CSA Standard CAN/CSA-ISO/IEC 14776-115:05, which has been approved as aNational Standard of Canada by the Standards Council of Canada.ISBN 1-55397-957-5 October 2005The Canadian Standards Association (CSA), under whose auspices this National Standard has been
3、 produced, was chartered in 1919 and accredited by the Standards Council of Canada to the National Standards system in 1973. It is a not-for-profit, nonstatutory, voluntary membership association engaged in standards development and certification activities. CSA standards reflect a national consensu
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10、 Suite 100Mississauga, Ontario, L4W 5N6CanadaThe Standards Council of Canada is the coordinating body of the National Standards system, a federation of independent, autonomous organizations working towards the further development and improvement of voluntary standardization in the national interest.
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16、approving National Standards of Canada rests with theStandards Council of Canada270 Albert Street, Suite 200Ottawa, Ontario, K1P 6N7CanadaAlthough 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
17、 its suitability for their particular purpose.Registered trade-mark of Canadian Standards AssociationCette norme est offerte en anglais seulement pour le moment. La CSA publiera la version enfranais ds quelle sera produite par lorganisme rdacteur.CAN/CSA-ISO/IEC 14776-115:05Information technology Sm
18、all computer systeminterface (SCSI) Part 115: Parallel Interface-5 (SPI-5)October 2005 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 14776-115:05Information technology Small computer system interface (SCSI) Part 115: Parallel Interface-5 (SPI-5)CSA PrefaceStandards development within the Infor
19、mation Technology sector is harmonized with international standards 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 on Information Technology (ISO/IEC JTC1) for the Stan
20、dards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T).At the time o
21、f publication, ISO/IEC 14776-115:2004 is available from ISO and IEC in English only. CSA will publish the French version when it becomes available from ISO and IEC.This International Standard was reviewed by the CSA TCIT under the jurisdiction of the Strategic Steering Committee on Information Techn
22、ology and deemed acceptable for use in Canada. (A committee 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 will review these documents for approval and publication. For a listing, refer to the CSA I
23、nformation Products catalogue or CSA Info Update or contact a CSA Sales representative. This Standard has been formally approved, without modification, by the Technical Committee and has been approved as a National Standard of Canada by the Standards Council of Canada.October 2005 Canadian Standards
24、 Association 2005All rights reserved. No part of this publication may be 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 the text, they should be interpreted as “thi
25、s National Standard of Canada”.Inquiries regarding this National Standard of Canada should be addressed toCanadian Standards Association5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4044www.csa.caINTERNATIONAL STANDARD ISO/IEC14776-115First edition2004-11In
26、formation technology Small computer system interface (SCSI) Part 115: Parallel Interface-5 (SPI-5) Reference number ISO/IEC 14776-115:2004(E) ISO/IEC 14776-115 3ContentsPageForeword .19Introduction.201 Scope .212 Normative references .222.1 Normative references 222.2 Approved references .222.3 Refer
27、ences under development 232.4 Other references .233 Definitions, symbols, abbreviations, and conventions 233.1 Definitions .233.2 Symbols and abbreviations .323.3 Keywords 333.4 Conventions 343.5 Notation for Procedures and Functions .354 SCSI parallel interface model .364.1 SCSI parallel interface
28、model overview 364.2 Cables, connectors, signals, transceivers .364.3 Physical architecture of bus segment .364.4 Driver-receiver connections 374.5 Physical topology details and definitions .374.6 Bus segment loading .394.7 Termination requirements .394.8 SCSI device Addressing .394.9 Clocking metho
29、ds for data transfers .404.10 Paced transfer on a SCSI bus .424.11 Data transfers 444.11.1 Data transfer modes .444.11.1.1 Asynchronous transfers 444.11.1.2 Synchronous transfers 444.11.1.3 Paced transfers .444.11.2 ST DATA phase parallel transfers 444.11.3 DT DATA phase parallel transfers .454.11.3
30、.1 DT DATA phase parallel transfers format .454.11.3.2 Data group transfers .454.11.3.3 Information unit transfers 454.12 Negotiation 464.12.1 Negotiation introduction .464.12.2 Negotiation algorithm .464.12.3 When to negotiate 474.12.4 Negotiable fields .484.12.4.1 Negotiable fields introduction 48
31、4.12.4.2 Transfer agreements .494.12.4.3 Transfer period factor 494.12.4.4 REQ/ACK offset 514.12.4.5 Transfer width exponent 524.12.4.6 Protocol options 524.12.4.6.1 Protocol options introduction 524.12.4.6.2 IU_REQ 534.12.4.6.3 DT_REQ .5414776-115 ISO/IEC:2004(E) 34 ISO/IEC 14776-1154.12.4.6.4 QAS_
32、REQ 544.12.4.6.5 HOLD_MCS .544.12.4.6.6 WR_FLOW .554.12.4.6.7 RD_STRM 554.12.4.6.8 RTI .554.12.4.6.9 PCOMP_EN .554.12.5 Negotiable field combinations 564.12.6 Message restrictions 574.12.7 Negotiation message sequences .584.12.7.1 Negotiation message sequences overview .584.12.7.2 SCSI initiator por
33、t originated PPR negotiation 594.12.7.3 SCSI initiator port originated WDTR negotiation .604.12.7.4 SCSI initiator port originated SDTR negotiation 624.12.7.5 SCSI target port originated WDTR negotiation .644.12.7.6 SCSI target port originated SDTR negotiation 674.13 Protocol .685 SCSI parallel inte
34、rface connectors .715.1 SCSI parallel interface connectors overview .715.2 Non-shielded connector 715.2.1 Non-shielded connector alternative 1 - A cable .715.2.2 Non-shielded connector alternative 2 - A cable .715.2.3 Non-shielded connector alternative 3 - P cable .725.2.4 Non-shielded connector alt
35、ernative 4 .725.3 Shielded connector .785.3.1 Shielded connector overview .785.3.2 Shielded connector alternative 1 - A cable .785.3.3 Shielded connector alternative 2 - A cable .785.3.4 Shielded connector alternative 3 - P cable .785.3.5 Shielded connector alternative 4 - P cable .785.4 Connector c
36、ontact assignments 865.4.1 Connector contact assignments overview 865.4.2 Differential connector contact assignments .876 SCSI bus segment interconnect .906.1 SCSI bus segment interconnect overview 906.2 SCSI bus segment cables .906.3 Interconnect characteristics for signals .916.3.1 SCSI bulk cable
37、 916.3.2 Minimum conductor size for signals .926.3.3 Local transmission line impedance 926.3.4 Extended distance transmission line impedance .926.3.5 Capacitance .926.3.6 Differential propagation time and propagation time skew 926.3.7 Differential attenuation .926.3.8 Crosstalk 936.4 Decoupling char
38、acteristics for TERMPWR lines .936.5 Connection requirements for RESERVED lines 946.6 Cables used with LVD transceivers 946.7 LVD stub length and spacing 957 SCSI parallel interface electrical characteristics .967.1 SCSI parallel interface electrical characteristics overview 967.2 LVD termination .9
39、67.2.1 LVD termination overview 967.2.2 LVD driver characteristics 1017.2.3 LVD receiver characteristics 1044 14776-115 ISO/IEC:2004(E)ISO/IEC 14776-115 57.2.4 LVD capacitive loads 1057.2.4.1 Management of LVD release glitches .1077.2.5 SE/HVD transmission mode detection .1097.2.5.1 SE/HVD transmiss
40、ion mode detection overview .1097.2.5.2 LVD DIFFSENS driver 1097.2.5.3 LVD DIFFSENS receiver .1107.3 Terminator power 1128 SCSI bus signals 1148.1 SCSI bus signals overview 1148.2 Signal descriptions 1148.3 LVD Signal states 1178.4 OR-tied signals 1188.5 Signal sources .1189 SCSI parallel bus timing
41、 .1209.1 SCSI parallel bus timing values 1209.2 Timing description .1269.2.1 Arbitration delay .1269.2.2 ATN transmit setup time .1279.2.3 ATN receive setup time 1279.2.4 Bus clear delay .1279.2.5 Bus free delay 1279.2.6 Bus set delay 1279.2.7 Bus settle delay 1289.2.8 Cable skew .1289.2.9 Chip nois
42、e in receiver .1289.2.10 Clock jitter 1289.2.11 Crosstalk time shift .1289.2.12 Flow control receive hold time 1289.2.13 Flow control receive setup time 1289.2.14 Flow control transmit hold time 1289.2.15 Flow control transmit setup time 1289.2.16 Offset induced time asymmetry 1299.2.17 pCRC receive
43、 hold time .1299.2.18 pCRC receive setup time .1299.2.19 pCRC transmit hold time 1299.2.20 pCRC transmit setup time 1299.2.21 Data release delay .1299.2.22 DIFFSENS voltage filter time .1299.2.23 Physical disconnection delay .1299.2.24 Power on to selection .1299.2.25 QAS arbitration delay .1309.2.2
44、6 QAS assertion delay 1309.2.27 QAS release delay .1309.2.28 QAS non-DATA phase REQ(ACK) period .1309.2.29 Receive assertion period 1309.2.30 Receive hold time .1309.2.31 Receive internal hold time 1309.2.32 Receive internal setup time 1309.2.33 Receive negation period 1319.2.34 Receive setup time .
45、1319.2.35 Receive REQ(ACK) period tolerance .1319.2.36 Receive REQ assertion period with P_CRCA transitioning .1319.2.37 Receive REQ negation period with P_CRCA transitioning 1319.2.38 Receive Skew Compensation 1319.2.39 Receiver amplitude time skew .13114776-115 ISO/IEC:2004(E) 56 ISO/IEC 14776-115
46、9.2.40 Receiver de-skewed data valid window .1319.2.41 REQ(ACK) period .1329.2.42 Reset delay 1329.2.43 Reset hold time 1329.2.44 Reset to selection .1329.2.45 Residual skew error .1339.2.46 Selection abort time .1339.2.47 Selection time-out delay .1339.2.48 Signal timing skew .1339.2.49 Skew correc
47、tion range .1339.2.50 Strobe offset tolerance .1349.2.51 System deskew delay 1349.2.52 System noise at launch 1349.2.53 System noise at receiver 1349.2.54 Time asymmetry .1349.2.55 Transmit assertion period .1349.2.56 Transmit hold time 1359.2.57 Transmit ISI Compensation 1359.2.58 Transmit negation
48、 period .1359.2.59 Transmit setup time 1359.2.60 Transmit REQ(ACK) period tolerance 1359.2.61 Transmit REQ assertion period with P_CRCA transitioning 1359.2.62 Transmit REQ negation period with P_CRCA transitioning .1359.2.63 Transmitter skew 1359.2.64 Transmitter time asymmetry .1369.3 Measurement
49、points 1369.3.1 Measurement points overview .1369.3.2 LVD measurement points .1379.4 Receiver Masks .1399.4.1 Synchronous transfers and for fast-160 paced transfer clocking signals .1399.4.2 Paced transfers with precompensation enabled on fast-160 .1409.4.3 Paced transfers with precompensation disabled on fast-160 and fast-320 1429.5 Timing parameters 1489.6 Setup and hold timings 1489.6.1 ST data transfer calculations 1489.6.2 DT data transfer calculations .14910 SCSI bus phases 15110.1 SCSI bus phases overview .15110.2 BUS FREE phase .15110.3 E
