1、American National StandardDeveloped byfor Information Technology Serial Attached SCSI - 2.1(SAS-2.1)INCITS 478-2011INCITS 478-2011Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,
2、-Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-INCITS 478-2011American National Standardfor Information Technology Serial Attached SCSI - 2.1(SAS-2.1)SecretariatInformation Te
3、chnology Industry CouncilApproved November 30, 2011American National Standards Institute, Inc.AbstractThis standard specifies the functional requirements for the Serial Attached SCSI (SAS) physical interconnect, which is compatible with the Serial ATA physical interconnect. The SAS Protocol Layer (S
4、PL) standard documents the SAS protocol layer corresponding to the Serial Attached SCSI - 2.1 (SAS-2.1) and beyond. Prior to this standard, the protocol layer was included with the physical layer. This standard is intended to be used in conjunction with SCSI and ATA command set standards.Copyright A
5、merican National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Approval of an American National Standard requires review by ANSI that therequirements for due process, consensus, and other criteria for ap
6、proval havebeen met by the standards developer.Consensus is established when, in the judgement of the ANSI Board ofStandards Review, substantial agreement has been reached by directly andmaterially affected interests. Substantial agreement means much more thana simple majority, but not necessarily u
7、nanimity. Consensus requires that allviews and objections be considered, and that a concerted effort be madetowards their resolution.The use of American National Standards is completely voluntary; theirexistence does not in any respect preclude anyone, whether he has approvedthe standards or not, fr
8、om manufacturing, marketing, purchasing, or usingproducts, processes, or procedures not conforming to the standards.The American National Standards Institute does not develop standards andwill in no circumstances give an interpretation of any American NationalStandard. Moreover, no person shall have
9、 the right or authority to issue aninterpretation of an American National Standard in the name of the AmericanNational Standards Institute. Requests for interpretations should beaddressed to the secretariat or sponsor whose name appears on the titlepage of this standard.CAUTION NOTICE: This American
10、 National Standard may be revised orwithdrawn at any time. The procedures of the American National StandardsInstitute require that action be taken periodically to reaffirm, revise, orwithdraw this standard. Purchasers of American National Standards mayreceive current information on all standards by
11、calling or writing the AmericanNational Standards Institute.American National StandardPublished byAmerican National Standards Institute, Inc.25 West 43rd Street, New York, NY 10036Copyright 2011 by Information Technology Industry Council (ITI)All rights reserved.No part of this publication may be re
12、produced in anyform, in an electronic retrieval system or otherwise,without prior written permission of ITI, 1101 K Street NW, Suite 610, Washington, DC 20005. Printed in the United States of AmericaCAUTION: The developers of this standard have requested that holders of patents that may be re-quired
13、 for the implementation of the standard disclose such patents to the publisher. However, nei-ther the developers nor the publisher have undertaken a patent search in order to identify which, ifany, patents may apply to this standard. As of the date of publication of this standard, followingcalls for
14、 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 publication of this standard, no positionis taken with respect to the validity of this claim or of any rights in connection therewith. The knownpatent ho
15、lder(s) has (have), however, filed a statement of willingness to grant a license underthese rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to ob-tain such a license. Details may be obtained from the publisher. No further patent search is con-ducted by the deve
16、loper or publisher in respect to any standard it processes. No representation ismade or implied that this is the only license that may be required to avoid infringement in the use ofthis standard.Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo
17、 reproduction or networking permitted without license from IHS-,-,-iContentsPage1 Scope. 12 Normative references. 32.1 Normative references . 32.2 Approved references 32.3 References under development . 42.4 Other references. 43 Definitions, symbols, abbreviations, keywords, and conventions 63.1 Def
18、initions. 63.2 Symbols and abbreviations 123.3 Keywords 163.4 Editorial conventions 164 General 184.1 Physical links and phys 184.2 Phy test functions . 185 Physical layer. 195.1 Physical layer overview 195.2 Conventions for defining maximum limits for S-parameters . 195.3 Compliance points 205.4 In
19、terconnects 295.4.1 SATA connectors and cable assemblies 295.4.2 SAS connectors and cables 305.4.3 Connectors 345.4.3.1 Connectors overview. 345.4.3.2 Connector categories 365.4.3.3 SAS internal connectors 365.4.3.3.1 SAS Drive connectors 365.4.3.3.1.1 SAS Drive plug connector . 365.4.3.3.1.2 SAS Dr
20、ive cable receptacle connector 365.4.3.3.1.3 SAS Drive backplane receptacle connector 375.4.3.3.1.4 SAS Drive connector pin assignments 385.4.3.3.1.5 Micro SAS plug connector. 405.4.3.3.1.6 Micro SAS receptacle connector. 405.4.3.3.1.7 Micro SAS connector pin assignments . 415.4.3.3.2 SAS 4i connect
21、ors . 425.4.3.3.2.1 SAS 4i cable receptacle connector . 425.4.3.3.2.2 SAS 4i plug connector. 425.4.3.3.2.3 SAS 4i connector pin assignments . 435.4.3.3.3 Mini SAS 4i connectors 445.4.3.3.3.1 Mini SAS 4i cable plug connector . 445.4.3.3.3.2 Mini SAS 4i receptacle connector . 455.4.3.3.3.3 Mini SAS 4i
22、 connector pin assignments 465.4.3.3.4 Mini SAS HD internal connectors 485.4.3.3.4.1 Mini SAS HD 4i cable plug connector . 485.4.3.3.4.2 Mini SAS HD 8i cable plug connector . 495.4.3.3.4.3 Mini SAS HD 4i receptacle connector . 505.4.3.3.4.4 Mini SAS HD 8i receptacle connector . 515.4.3.3.4.5 Mini SA
23、S HD 4i connector pin assignments 525.4.3.4 SAS external connectors. 545.4.3.4.1 Mini SAS 4x connectors. 545.4.3.4.1.1 Mini SAS 4x cable plug connector 54Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted with
24、out license from IHS-,-,-ii5.4.3.4.1.2 Mini SAS 4x receptacle connector 615.4.3.4.1.3 Mini SAS 4x connector pin assignments. 675.4.3.4.1.4 Mini SAS 4x active connector pin assignments 685.4.3.4.1.5 Mini SAS 4x active cable power requirements 695.4.3.4.2 Mini SAS HD external connectors . 705.4.3.4.2.
25、1 Mini SAS HD 4x cable plug connector 705.4.3.4.2.2 Mini SAS HD 8x cable plug connector 715.4.3.4.2.3 Mini SAS HD 4x receptacle connector 725.4.3.4.2.4 Mini SAS HD 8x receptacle connector 735.4.3.4.2.5 Mini SAS HD 16x receptacle connector 735.4.3.4.2.6 Mini SAS HD 4x connector pin assignments. 755.4
26、.3.4.2.7 Mini SAS HD external connector management interface 765.4.3.4.2.8 Mini SAS HD external connector memory map. 765.4.3.4.3 QSFP+ connectors 775.4.3.4.3.1 QSFP+ cable plug. 775.4.3.4.3.2 QSFP+ receptacle. 785.4.3.4.3.3 QSFP+ connector pin assignments. 795.4.3.4.3.4 QSFP+ memory map 805.4.4 Cab
27、le assemblies 815.4.4.1 SAS internal cable assemblies 815.4.4.1.1 SAS Drive cable assemblies 815.4.4.1.2 SAS internal symmetric cable assemblies. 825.4.4.1.2.1 SAS internal symmetric cable assemblies overview . 825.4.4.1.2.2 SAS internal symmetric cable assembly - SAS 4i. 835.4.4.1.2.3 SAS internal
28、symmetric cable assembly - Mini SAS 4i . 845.4.4.1.2.4 SAS internal symmetric cable assembly - Mini SAS HD 4i . 855.4.4.1.2.5 SAS internal symmetric cable assembly - Mini SAS HD 8i . 865.4.4.1.2.6 SAS internal symmetric cable assembly - SAS 4i to Mini SAS 4i with vendor specific sidebands 875.4.4.1.
29、2.7 SAS internal symmetric cable assembly - SAS 4i controller to Mini SAS 4i backplane with SGPIO 885.4.4.1.2.8 SAS internal symmetric cable assembly - Mini SAS 4i controller to SAS 4i backplane with SGPIO 895.4.4.1.2.9 SAS internal symmetric cable assembly - Mini SAS 4i to Mini SAS HD 4i . 905.4.4.
30、1.3 SAS internal fanout cable assemblies . 915.4.4.1.3.1 SAS internal fanout cable assemblies overview . 915.4.4.1.3.2 SAS internal controller-based fanout cable assemblies 925.4.4.1.3.3 SAS internal backplane-based fanout cable assemblies 955.4.4.2 SAS external cable assemblies. 975.4.4.2.1 SAS ext
31、ernal cable assemblies overview 975.4.4.2.2 SAS external cable assembly - Mini SAS 4x . 985.4.4.2.3 SAS external cable assembly - Mini SAS HD 4x . 1015.4.4.2.4 SAS external cable assembly - Mini SAS HD 8x . 1035.4.4.2.5 SAS external cable assembly - Mini SAS HD 4x to Mini SAS 4x 1055.4.4.2.6 SAS ext
32、ernal cable assembly - QSFP+. 1055.4.5 Backplanes . 1055.5 TxRx connection characteristics. 1065.5.1 TxRx connection characteristics overview 1065.5.2 TxRx connection general characteristics 1075.5.3 Passive TxRx connection S-parameter limits . 1085.5.4 Passive TxRx connection characteristics for un
33、trained 1.5 Gbps, 3 Gbps, and 6 Gbps. 1095.5.5 Passive TxRx connection characteristics for trained 1.5 Gbps, 3 Gbps, and 6 Gbps. 1105.5.6 TxRx connection characteristics for active cable assemblies . 1115.5.6.1 Active cable assembly electrical characteristics overview 1115.5.6.2 Active cable assembl
34、y output electrical characteristics for trained 6 Gbps. 1115.5.6.3 Active cable assembly S-parameter limits. 1115.6 Test loads. 113Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-
35、,-iii5.6.1 Test loads overview 1135.6.2 Zero-length test load . 1145.6.3 TCTF test load 1165.6.4 Low-loss TCTF test load . 1205.6.5 Reference transmitter test load. 1225.7 Transmitter device and receiver device electrical characteristics. 1265.7.1 General electrical characteristics 1265.7.2 Transmit
36、ter device and receiver device transients 1265.7.3 Eye masks and the jitter transfer function (JTF) . 1275.7.3.1 Eye masks overview 1275.7.3.2 Jitter transfer function (JTF) 1275.7.3.3 Transmitter device eye mask for untrained 1.5 Gbps and 3 Gbps 1295.7.3.4 Receiver device eye mask for untrained 1.5
37、 Gbps and 3 Gbps 1295.7.3.5 Receiver device jitter tolerance eye mask for untrained 1.5 Gbps and 3 Gbps 1305.7.4 Transmitter device characteristics 1315.7.4.1 Transmitter device characteristics overview 1315.7.4.2 Transmitter device A.C. coupling requirements 1315.7.4.3 Transmitter device general el
38、ectrical characteristics. 1315.7.4.4 Transmitter device signal output characteristics for untrained 1.5 Gbps and 3 Gbps as measured with the zero-length test load . 1325.7.4.5 Transmitter device signal output characteristics for untrained 1.5 Gbps and 3 Gbps as measured with each test load 1335.7.4.
39、6 Transmitter device signal output characteristics for trained 1.5 Gbps, 3 Gbps, and 6 Gbps 1355.7.4.6.1 Transmitter device signal output characteristics for trained 1.5 Gbps, 3 Gbps, and 6 Gbps overview 1355.7.4.6.2 Transmitter device test procedure . 1365.7.4.6.3 Transmitter device S-parameter lim
40、its . 1375.7.4.6.4 Recommended transmitter device settings for interoperability 1385.7.4.6.5 Reference transmitter device characteristics. 1385.7.4.6.6 Transmitter equalization, VMA, and VP-Pmeasurement . 1405.7.4.7 Transmitter device signal output characteristics for OOB signals . 1415.7.5 Receiver
41、 device characteristics 1425.7.5.1 Receiver device characteristics overview 1425.7.5.2 Receiver device A.C. coupling requirements 1435.7.5.3 Receiver device general electrical characteristics. 1435.7.5.4 Delivered signal characteristics for untrained 1.5 Gbps and 3 Gbps 1445.7.5.5 Maximum delivered
42、jitter for untrained 1.5 Gbps and 3 Gbps . 1465.7.5.6 Receiver device jitter tolerance for untrained 1.5 Gbps and 3 Gbps. 1475.7.5.7 Receiver device and delivered signal characteristics for trained 1.5 Gbps, 3 Gbps, and 6 Gbps. 1485.7.5.7.1 Delivered signal characteristics for trained 1.5 Gbps, 3 Gb
43、ps, and 6 Gbps 1485.7.5.7.2 Receiver device S-parameter limits . 1485.7.5.7.3 Reference receiver device characteristics . 1495.7.5.7.4 Stressed receiver device jitter tolerance test . 1515.7.5.7.4.1 Stressed receiver device jitter tolerance test overview . 1515.7.5.7.4.2 Stressed receiver device jit
44、ter tolerance test procedure . 1545.7.5.7.4.3 Test equipment and ISI generator calibration . 1555.7.5.7.4.4 Crosstalk source calibration 1555.7.5.7.4.5 Applied SJ . 1565.7.5.8 Delivered signal characteristics for OOB signals 1575.7.6 Spread spectrum clocking (SSC) 1575.7.6.1 SSC overview 1575.7.6.2
45、Transmitter SSC modulation . 1595.7.6.3 Receiver SSC modulation tolerance . 1605.7.6.4 Expander device center-spreading tolerance buffer 1605.7.7 Non-tracking clock architecture. 1615.8 READY LED signal electrical characteristics 161Copyright American National Standards Institute Provided by IHS und
46、er license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-iv5.9 Out of band (OOB) signals . 1635.9.1 OOB signals overview. 1635.9.2 Transmitting OOB signals . 1645.9.3 Receiving OOB signals . 1665.9.4 Transmitting the SATA port selection signal . 167Anne
47、x A Jitter tolerance pattern (JTPAT) . 168Annex B SASWDP 170B.1 SASWDP introduction 170B.2 SASWDP.m 170B.3 SASWDP_testcase.m 177Annex C StatEye. 179C.1 StatEye introduction. 179C.2 analysis.py . 179C.3 cdr.py . 180C.4 extractJitter.py 181C.5 penrose.py . 183C.6 portalocker.py 185C.7 stateye.py. 189C
48、.8 touchstone.py. 203C.9 testcase.py. 212C.10 testall.py. 217C.11 File StatEye_readme.pdf . 219Annex D Signal performance measurements . 221D.1 Signal performance measurements overview 221D.2 Glossary. 221D.3 Simple physical link 221D.3.1 Simple physical link overview. 221D.3.2 Assumptions for the s
49、tructure of the transmitter device and the receiver device . 222D.3.3 Definition of receiver sensitivity and receiver device sensitivity . 223D.4 Signal measurement architecture 224D.4.1 General. 224D.4.2 Relationship between signal compliance measurements at interoperability points and operation in systems 224D.5 De-embedding connectors in test fixtures 225D.6 Measurement con
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