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Doc. No.: UoD-DICE-TN-9201 Issue: D(4)
Contract No. 12693/97/NL/FM
SpaceWire Standard
DRAFT
Date: May 2000
- 1 -
ECSS-E-50-12 Space Engineering
SpaceWire:
SERIAL POINT-TO-POINT LINKS
DRAFT
DOCUMENT NUMBER UoD-DICE-TN-9201
ISSUE ISSUE D
DATE May 2000
ESA CONTRACT NO. 12693/97/NL/FM
ESA TECHNICAL MANAGER J. Rosello
AUTHOR Dr SM Parkes, University of Dundee
CONTRIBUTORS SPACEWIRE WORKING GROUP
Doc. No.: UoD-DICE-TN-9201 Issue: D(4)
Contract No. 12693/97/NL/FM
SpaceWire Standard
DRAFT
Date: May 2000
- 2 -
Document Revision History
Revision Date Responsible Modifications/
Reasons for Change
Draft A Sept. 1999 SM Parkes Initial release
Draft B Oct. 1999 SM Parkes Corrections from initial comments from ESTEC
and Dornier Satellitensysteme on draft A.
Draft C Jan 2000 SM Parkes Corrections following comments received during
SpaceWire Working Group meeting on 27
th
October and Core Group meeting on 8
th
December.
Also reflects comments received by email.
Draft D May 2000 SM Parkes Minor corrections to sections 4, 5 and 6 (physical,
signal and character levels). Major changes to
section 7 (exchange level) following detailed
analysis and simulation exercises. Error handling
added to packet level (section 8). Network level
(section 9) defined and made normative. Error
recovery scheme (section 10) defined.
Conformance criteria (section 11) expanded to
include Routing Switch and Network. Another
difference between IEEE-1355 and SpaceWire
added to Annex C.
Doc. No.: UoD-DICE-TN-9201 Issue: D(4)
Contract No. 12693/97/NL/FM
SpaceWire Standard
DRAFT
Date: May 2000
- 3 -
TABLE OF CONTENTS
ACKNOWLEDGEMENTS 8
1. OVERVIEW 9
1.1 PURPOSE 9
1.2 SCOPE 9
1.3 GUIDE TO THE STANDARD 9
1.4 NORMATIVE REFERENCES 10
1.5 RATIONALE FOR STANDARD 11
1.6 DISCLAIMER – INTELLECTUAL PROPERTY 12
1.7 DOCUMENT NOTATION 12
2. DEFINITIONS 14
2.1 CONFORMANCE GLOSSARY 14
2.2 TECHNICAL GLOSSARY 14
3. OVERALL DESCRIPTION 18
3.1 PHYSICAL LEVEL 18
3.2 SIGNAL LEVEL 19
3.3 CHARACTER LEVEL 21
3.4 EXCHANGE LEVEL 21
3.5 PACKET LEVEL 23
3.6 NETWORK LEVEL 23
3.7 APPLICATION INTERFACE 23
4. PHYSICAL LEVEL 25
4.1 CABLES 25
4.2 CONNECTORS 29
4.3 CABLE ASSEMBLY 31
4.4 PCB/BACKPLANE LINK 32
5. SIGNAL LEVEL 33
5.1 LVDS 33
5.2 FAILSAFE OPERATION OF LVDS 33
5.3 SIGNAL CODING 33
5.4 DIFFERENTIAL DS 34
Doc. No.: UoD-DICE-TN-9201 Issue: D(4)
Contract No. 12693/97/NL/FM
SpaceWire Standard
DRAFT
Date: May 2000
- 4 -
5.5 SPACEWIRE LINK 34
5.6 DATA SIGNALLING RATE 34
6. CHARACTER LEVEL 39
6.1 DATA 39
6.2 CONTROL 39
6.3 PARITY FOR ERROR DETECTION 40
6.4 HOST INTERFACE TO TRANSMITTER AND RECEIVER 41
7. EXCHANGE LEVEL 42
7.1 LINK-CHARACTERS AND NORMAL-CHARACTERS (NORMATIVE) 42
7.2 FLOW CONTROL (NORMATIVE) 42
7.3 ENCODER/DECODER BLOCK DIAGRAM (INFORMATIVE) 43
7.4 STATE MACHINE (NORMATIVE) 45
7.5 AUTOSTART (NORMATIVE) 49
7.6 LINK INITIALISATION (INFORMATIVE) 49
Figure 7-5 Example: Typical Initialisation Sequence 52
7.7 NORMAL OPERATION (INFORMATIVE) 52
7.8 ERROR DETECTION (NORMATIVE) 53
7.9 EXCEPTION CONDITIONS (INFORMATIVE) 54
7.10 LINK TIMING (NORMATIVE) 59
8. PACKET LEVEL 60
8.1 PACKETS 60
9. NETWORK LEVEL 61
9.1 NETWORK AND ROUTING CONCEPTS (INFORMATIVE) 61
9.2 SPACEWIRE ROUTING SWITCHES (NORMATIVE) 66
9.3 SPACEWIRE NODES (NORMATIVE) 68
9.4 SPACEWIRE NETWORK (NORMATIVE) 68
9.5 NETWORK LEVEL ERRORS (NORMATIVE) 69
9.6 EXAMPLE NETWORKS (INFORMATIVE) 70
10. ERROR RECOVERY SCHEME (INFORMATIVE) 74
10.1 EXCHANGE LEVEL ERRORS 74
10.2 NETWORK LEVEL ERRORS 74
10.3 LINK ERROR RECOVERY 75
Doc. No.: UoD-DICE-TN-9201 Issue: D(4)
Contract No. 12693/97/NL/FM
SpaceWire Standard
DRAFT
Date: May 2000
- 5 -
10.4 APPLICATION LEVEL ERROR HANDLING 77
11. CONFORMANCE CRITERIA 78
11.1 CONFORMANCE STATEMENTS 78
11.2 DEFINITION OF SUBSETS 78
ANNEX A (INFORMATIVE) SPACEWIRE REQUIREMENTS 85
A.1 DATA SIGNALLING RATE AND CABLE LENGTH 85
A.2 EMC 85
A.3 ESD 87
A.4 ERROR RATE 87
A.5 RADIATION 87
A.6 POWER CONSUMPTION 88
A.7 FAIL SAFE / FAULT ISOLATION 88
A.8 MASS AND SIZE 89
A.9 MAGNETIC EMISSION 90
A.10 GALVANIC ISOLATION 90
A.11 REQUIREMENTS SUMMARY 90
ANNEX B (NORMATIVE) SPACEWIRE EMC PERFORMANCE 92
ANNEX C (INFORMATIVE) DIFFERENCES BETWEEN SPACEWIRE AND IEEE-1355 95
C.1 PHYSICAL LEVEL 95
C.2 SIGNAL LEVEL 95
C.3 CHARACTER LEVEL 95
C.4 EXCHANGE LEVEL 95
C.5 PACKET LEVEL 96
C.6 NETWORK LEVEL 96
C.7 ERROR RECOVERY SCHEME 96
C.8 OTHER MINOR DIFFERENCES 96
ANNEX D (INFORMATIVE) BIBLIOGRAPHY 98
D.1 REFERENCE DOCUMENTS 98
剩余99页未读,继续阅读
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