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Space data and information transfer systems - SpaceFibre data bus communication protocol on spacecraft
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GB/T 43670-2024
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Basic data | Standard ID | GB/T 43670-2024 (GB/T43670-2024) | | Description (Translated English) | Space data and information transfer systems - SpaceFibre data bus communication protocol on spacecraft | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | V75 | | Classification of International Standard | 49.140 | | Word Count Estimation | 138,123 | | Date of Issue | 2024-03-15 | | Date of Implementation | 2024-07-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 43670-2024: Space data and information transfer systems - SpaceFibre data bus communication protocol on spacecraft
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ICS 49.140
CCSV75
National Standards of People's Republic of China
Space data and information transmission system
Spacecraft SpaceFibre bus communication protocol
Released on 2024-03-15
2024-07-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Abbreviations 4
5 General Principles 4
5.1 Protocol Stack 4
5.2 Topology 6
6 Business Definition 6
6.1 Business Description 6
6.2 Network layer services 7
6.3 Data Link Layer Services 7
6.4 Physical layer services 8
6.5 Management Information Base Services 8
7 Format Definition 8
7.1 8B/10B Encoding and Decoding 8
7.2 Control Word 11
7.3 Character 23
7.4 Frame Format 24
7.5 Data Packet Format 26
7.6 Control Word and Frame Priority 27
7.7 K code summary table 28
7.8 Summary table of control characters 28
8 Physical Layer Protocol 29
8.1 Physical layer functions 29
8.2 Serialization 30
9 Data Link Layer Protocol 31
9.1 Channel Sublayer Protocol 31
9.2 Multichannel Sublayer Protocol 44
9.3 Link Control Sublayer Protocol 55
10 Network Layer Protocol 79
10.1 Network Layer Functions 79
10.2 SpaceFibre Network 80
10.3 Virtual Network 81
10.4 Link 83
10.5 Sending Data Packets 83
10.6 Receiving Data Packets 83
10.7 Routing Switch 84
10.8 Packet Addressing 87
10.9 Group Adaptive Routing 89
10.10 Packet Multicast 89
10.11 Broadcast Message 89
10.12 SpaceFibre Node 90
10.13 SpaceFibre Unit 91
11 Management Information Base92
11.1 Management Information Base Function 92
11.2 Network Management 92
11.3 Configuration Parameters 92
11.4 Status parameters 95
12 Reliability Design 96
12.1 Service Quality Assurance Mechanism 96
12.2 FDIR Mechanism 97
Appendix A (Informative) SpaceFibre bus physical layer design reference 98
Appendix B (Normative) SpaceFibre Bus Communication Protocol Business Interface 120
Appendix C (Informative) SpaceFibre bus communication protocol CRC check code calculation 129
References 131
Figure 1 Schematic diagram of SpaceFibre bus protocol stack 5
Figure 2 SpaceFibre bus simplest network diagram 6
Figure 3 Schematic diagram of SpaceFibre bus complex network 6
Figure 4 Schematic diagram of D/K character representation of 8B/10B coding symbols 9
Figure 5 Padding character 24 at the end of the packet
Figure 6 Padding characters 24 at the beginning and end of a packet
Figure 7 Single channel data frame structure 25
Figure 8 Idle frame structure 26
Figure 9 Broadcast frame structure 26
Figure 10 SpaceFibre data packet format 27
Figure 11 Physical layer interface 30
Figure 12 Channel sublayer interface 32 of a single channel link
Figure 13 Connection interface between multi-channel and channel sublayer 33
Figure 14 Channel initialization state machine 34
Figure 15 Receive synchronization state machine 43
Figure 16 Multi-channel sublayer interface 45
Figure 17 Multi-channel link with different number of channels at both ends 45
Figure 18 Words forming row 46 on a multi-channel link
Figure 19.Data expansion on a multi-channel link 47
Figure 20 PAD control word padding in multi-channel links 47
Figure 21 Row alignment of multi-channel links 49
Figure 22 Alignment state machine 51
Figure 23 Multi-channel link with unidirectional channels 53
Figure 24 Link Control Sublayer Interface 56
Figure 25 Scrambler/Descrambler 64
Figure 26 Scrambling example of a short data frame 64
Figure 27 Idle frame scrambling effect 65
Figure 28 Bit order in 16-bit CRC calculation 67
Figure 29 Bit order in 8-bit CRC calculation 68
Figure 30 Receive Error State Machine 72
Figure 31 Data word recognition state machine 74
Figure 32 Link reset state machine 77
Figure 33 Network layer interface relationship 80
Figure 34 SpaceFibre network composition 81
Figure 35 Relationship of virtual networks 83
Figure 36 Composition of SpaceFibre routing switch 85
Figure 37 SpaceFibre node components and node instantiation 91
Figure 38 Components and instantiations of a SpaceFibre unit 92
Figure A.1 Schematic diagram of the electrical physical layer unidirectional structure 98
Figure A.2 Serial output signal 101
Figure A.3 Serial output test circuit 102
Figure A.4 Serial Eye Diagram Template 102
Figure A.5 Serial input signal 103
Figure A.6 Schematic diagram of a single channel of a flight cable assembly 106
Figure A.7 Flight connector adapter protector 107
Figure A.8 Schematic diagram of single channel connection of EGSE cable assembly 109
Figure A.9 Schematic diagram of EGSE to flight adapter cable assembly 110
Figure A.10 Unidirectional optical fiber physical layer structure composition 110
Figure A.11 Unidirectional optical fiber physical layer structure using active optical fiber 111
Figure A.12 Electrical-optical eye diagram template for 1Gbit/s~5Gbit/s transmitter 112
Figure A.13 Electrical-optical eye diagram template for 1Gbit/s~10Gbit/s transmitter 113
Figure A.14 A flying optical cable assembly comprising one channel 116
Figure A.15 Flying cable assembly containing multiple channels 117
Figure A.16 Flying cable assembly for asymmetric links 117
Figure A.17 Active optical cable assembly for flight 119
Figure C.1 CRC checksum calculation example for data frame 129
Figure C.2 Calculation example of CRC checksum for broadcast frame and FCT 130
Table 1 5B/6B encoding table (lower 5 bits encoding of 8-bit data) 10
Table 2 3B/4B encoding table (high 3 bits encoding of 8-bit data) 11
Table 3 Channel control word 11
Table 4 Multi-channel control word 16
Table 5 Data frame control word 17
Table 6 Flow Control Word 20
Table 7 Error recovery control word 21
Table 8 Receive error indication control word 23
Table 9 SpaceFibre standard character 23
Table 10 Fill control character 24
Table 11 K code summary table 28
Table 12 Summary of control character symbols 28
Table 13 Priority values of different QoS types60
Table 14 Routing switch address 85
Table 15 SpaceFibre configuration parameters 93
Table 16 SpaceFibre status parameters 95
Table A.1 Summary of control characters 99
Table A.2 1Gbit/s~3.125Gbit/s serial eye diagram template spacing 99
Table A.3 3.125Gbit/s~6.25Gbit/s serial eye diagram template spacing 100
Table A.4 Driver and receiver characteristics for 1 Gbit/s to 3.125 Gbit/s 100
Table A.5 Driver and receiver characteristics for 3.125 Gbit/s to 6.25 Gbit/s 101
Table A.6 Flight cable assembly connector contact terminal connection relationship 106
Table A.7 Flight connector adapter protector connector contact termination 107
Table A.8 EGSE cable assembly connector contact terminal connection relationship 109
Table A.9 EGSE to flight adapter cable assembly connector contact terminal connection relationship 109
Table A.10 Electro-optical characteristics of 1Gbit/s~5Gbit/s transmitter 112
Table A.11 Electro-optical characteristics of 1Gbit/s~10Gbit/s transmitter 113
Table A.12 Electro-optical characteristics of 1Gbit/s~5Gbit/s receiver 114
Table A.13 Electro-optical characteristics of 1Gbit/s~10Gbit/s receiver 115
Table A.14 Connector contact connection relationship for each SpaceFibre channel in the flying cable assembly 116
Table A.15 Signals per SpaceFibre channel in the Flying Active Optical Cable Assembly connector 118
Table A.16 Connector contact relationship for each SpaceFibre channel in a flying active optical cable assembly 119
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed and coordinated by the National Technical Committee for Standardization of Aerospace Technology and Its Applications (SAC/TC425).
This document was drafted by. Beijing Space Vehicle General Design Department, China Academy of Space Technology, Beijing Institute of Microelectronics Technology, China
Aerospace Standardization Research Institute, Xiamen Panchi Technology Research Institute Co., Ltd., State Grid Siji Location Services Co., Ltd., Zhejiang Huilong Chip Technology Co., Ltd.
Limited company.
The main drafters of this document are. Niu Yuehua, Wang Luyuan, Xu Zhihong, Li Xin, Liu Weiwei, Pang Yalong, Zhao Wenyan, Guo Hehe, Zhan Panpan,
Tian Miaomiao, Wu Wei, Li Ke, Wang Wenping, Fei Haidong, Xu Dongyan, Wang Dan, Feng Guoping, Jiang Shuai, Zhang Yi, Guo Jiaxin, Xu Jieli, Zhao Guang, Gu Pilin.
Space data and information transmission system
Spacecraft SpaceFibre bus communication protocol
1 Scope
This document specifies the spacecraft SpaceFibre bus communication protocol business, data format, physical layer protocol, data link layer protocol,
Network layer protocols, management information base, and reliability design.
This document applies to the development and use of the SpaceFibre bus and its related equipment in spacecraft.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 42041 Aerospace terminology Space data and information transmission
3 Terms and definitions
The terms and definitions defined in GB/T 42041 and the following apply to this document.
3.1
Active Lane
An active one-way channel or a two-way channel.
3.2
asymmetric link
A link containing multiple channels in which one or more channels are unidirectional channels.
3.3
Available bandwidth availablebandwidth
The number of data words and control words sent by all virtual channels in the link since the last update of bandwidth credits.
3.4
bandwidth utilization
The percentage of bandwidth allocated to a virtual channel that has been used in the recent period.
Note. When the bandwidth credit of a virtual channel reaches the upper or lower threshold, there is no need to calculate bandwidth utilization for a short period of time.
3.5
Bidirectional channel bi-directionallane
An active channel for bidirectional information transmission on a link.
3.6
broadcastmessage
8 bytes of application data sent to each node on the network, and an 8-bit broadcast type identifier that indicates the meaning of the application data.
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