FprEN 16603-50-11
(Main)The scope of the SpaceFibre standard is the detailed specification a very high-speed serial link protocol stack reaching from link level Quality layer down to the Physical layer. The higher layers like packet, network and higher level protocols are the same as for SpaceWire and specified in the respective standards ECSS-E-ST-50-12C and ECSS-E-ST-50-51C to 53C.
Raumfahrttechnik - SpaceFibre - Teil 50-11: Sehr schnelle serielle Schnittstelle
Ingénierie spatiale - SpaceFibre - Liaison série très haut débit
SpaceFibre est une technologie de liaison série et de réseau à très haut débit spécialement conçue pour une utilisation à bord des engins spatiaux. Capable de fonctionner sur câble électrique et sur câble à fibre optique, SpaceFibre prend en charge des débits de données allant jusqu'à 5 Gbit/s (débit binaire de 6,25 Gbit/s). Cette technologie complète les capacités de la norme de réseaux embarqués SpaceWire largement utilisée. L'amélioration d'un facteur 10 du débit de données permet de réduire la masse des câbles et d'assurer un isolement galvanique. La technique multivoies augmente le débit de données encore davantage et permet de dépasser les 20 Gbit/s.
SpaceFibre offre un mécanisme de qualité de service cohérent, qui permet de prendre en charge une largeur de bande réservée et programmée, ainsi que des qualités de service basées sur des priorités. Elle améliore considérablement la détection des défauts, les possibilités d'isolement des pannes et de reprise sur panne (FDIR) par rapport à SpaceWire.
SpaceFibre a pour but de prendre en charge les charges utiles à haut débit, comme par exemple les radars à synthèse d'ouverture et les instruments optiques hyperspectraux. Cette technologie assure des communications longue distance robustes pour les applications de type lanceur et prend en charge des applications avioniques avec des contraintes de livraison déterministes, grâce à l'utilisation de canaux virtuels. SpaceFibre permet d'utiliser une infrastructure embarquée commune sur un grand nombre d'applications de mission différentes, entraînant ainsi une réduction des coûts et une possibilité de réutiliser la conception. SpaceFibre utilise un format de paquet identique à celui de SpaceWire, ce qui permet une connexion simple entre les équipements SpaceWire existants et les liaisons et réseaux SpaceFibre à grande vitesse. Les applications développées pour SpaceWire peuvent être directement transposées à SpaceFibre.
La norme SpaceFibre spécifie les interfaces vers l'application utilisateur et vers le support de transmission physique. Les interfaces intermédiaires entre couches de protocole sont également spécifiées. Les fonctions à réaliser par une interface SpaceFibre sont spécifiées. Les caractéristiques des connecteurs et des câbles pour les réalisations optiques et cuivre de SpaceFibre sont également spécifiées.
La présente norme peut être adaptée aux caractéristiques et contraintes spécifiques d’un projet spatial, conformément à l’ECSS-S-ST-00.
Vesoljska tehnika - SpaceFibre - Zelo hitri serijski vmesnik
General Information
Standards Content (sample)
SLOVENSKI STANDARD
oSIST prEN 16603-50-11:2018
01-oktober-2018
Vesoljska tehnika - SpaceFibre - Zelo hitri serijski vmesnik
Space engineernig - SpaceFibre - Very high-speed serial link
Raumfahrttechnik - SpaceFibre - Serielle Verbindung mit sehr hoher Geschwindigkeit
Ingénierie spatiale - SpaceFibre - Liaison série très haut débitTa slovenski standard je istoveten z: prEN 16603-50-11
ICS:
49.140 Vesoljski sistemi in operacije Space systems and
operations
oSIST prEN 16603-50-11:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 16603-50-11:2018
EUROPEAN STANDARD
DRAFT
prEN 16603-50-11
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2018
ICS 49.140
English version
Space engineernig - SpaceFibre - Very high-speed serial
link
Ingénierie spatiale - SpaceFibre - Liaison série très Raumfahrttechnik - SpaceFibre - Serielle Verbindung
haut débit mit sehr hoher GeschwindigkeitThis draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/CLC/JTC 5.If this draft becomes a European Standard, CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal
Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any
alteration.This draft European Standard was established by CEN and CENELEC in three official versions (English, French, German). A
version in any other language made by translation under the responsibility of a CEN and CENELEC member into its own
language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.Recipients of this draft are invited to submit, with their comments, notification
of any relevant patent rights of which they are aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2018 CEN/CENELEC All rights of exploitation in any form and by any means Ref. No. prEN 16603-50-11:2018 E
reserved worldwide for CEN national Members and forCENELEC Members.
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prEN 16603-50-11:2018 (E)
Table of contents
European Foreword ................................................................................................... 9
1 Scope ..................................................................................................................... 10
2 Normative references ........................................................................................... 11
3 Terms, definitions and abbreviated terms .......................................................... 13
3.1 Terms defined in other standards ........................................................................... 13
3.2 Terms specific to the present standard ................................................................... 13
3.3 Abbreviated terms................................................................................................... 26
3.4 Conventions............................................................................................................ 29
3.4.1 Numbers ................................................................................................... 29
3.4.2 Multiplication ............................................................................................. 29
3.4.3 Differential signals ..................................................................................... 29
3.4.4 Order of sending bits in symbols ............................................................... 29
3.4.5 Graphical representation of packets .......................................................... 30
3.4.6 State diagram notation .............................................................................. 30
3.4.7 UML diagram notation ............................................................................... 31
3.4.8 D/K notation for 8B/10B characters ........................................................... 32
4 Principles .............................................................................................................. 34
4.1 SpaceFibre purpose ............................................................................................... 34
4.2 SpaceFibre overview .............................................................................................. 35
5 Requirements ........................................................................................................ 37
5.1 Overview ................................................................................................................ 37
5.2 Protocol stack and interface architecture ................................................................ 37
5.2.1 General ..................................................................................................... 37
5.2.2 Network layer ............................................................................................ 39
5.2.3 Data Link layer .......................................................................................... 39
5.2.4 Multi-Lane layer ........................................................................................ 39
5.2.5 Lane layer ................................................................................................. 40
Document type: European StandardDocument subtype:
Document stage: ENQUIRY
Document language: E
Y:\STD_MGT\STDDEL\PRODUCTION\Standards\JT005\128\41_e_stf.docx
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5.2.6 Physical layer ............................................................................................ 40
5.2.7 Management information base .................................................................. 40
5.3 Formats .................................................................................................................. 41
5.3.1 Control words and encoding/decoding ...................................................... 41
5.3.2 8B/10B encode/decode ............................................................................. 41
5.3.3 Lane control words .................................................................................... 43
5.3.4 Multi-Lane control words ........................................................................... 50
5.3.5 Data Link control words ............................................................................. 51
5.3.6 Receive error indication control word (RXERR) ......................................... 61
5.3.7 Characters ................................................................................................ 62
5.3.8 Frames ...................................................................................................... 64
5.3.9 Packets ..................................................................................................... 68
5.3.10 Control word and frame precedence ......................................................... 69
5.3.11 K-code summary ....................................................................................... 71
5.3.12 Control word symbol summary .................................................................. 71
5.4 Physical layer ......................................................................................................... 73
5.4.1 Physical layer responsibilities .................................................................... 73
5.4.2 Serialisation .............................................................................................. 74
5.4.3 Electrical physical layer ............................................................................. 76
5.4.4 Electrical medium ...................................................................................... 85
5.4.5 Fibre optic physical layer ........................................................................... 93
5.4.6 Fibre optic medium .................................................................................. 100
5.5 Lane layer ............................................................................................................. 109
5.5.1 Lane layer responsibilities ....................................................................... 109
5.5.2 Lane initialisation and standby management ........................................... 111
5.5.3 Data signalling rate compensation .......................................................... 123
5.5.4 IDLE words ............................................................................................. 123
5.5.5 Parallel loopback ..................................................................................... 124
5.5.6 Symbol synchronisation .......................................................................... 124
5.5.7 Word synchronisation .............................................................................. 124
5.5.8 Receive synchronisation state machine .................................................. 125
5.6 Multi-Lane layer .................................................................................................... 128
5.6.1 Multi-Lane layer responsibilities .............................................................. 128
5.6.2 Multi-Lane link ......................................................................................... 129
5.6.3 Multi-Lane bypass ................................................................................... 130
5.6.4 Multi-Lane distribution ............................................................................. 130
5.6.5 Multi-Lane concentration ......................................................................... 134
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5.6.6 Lane Alignment ....................................................................................... 134
5.6.7 Alignment state diagram ......................................................................... 138
5.6.8 Asymmetric links ..................................................................................... 141
5.6.9 Initialisation of unidirectional lanes .......................................................... 142
5.6.10 Hot redundant lanes ................................................................................ 143
5.7 Data Link layer ...................................................................................................... 146
5.7.1 Data Link layer responsibilities ................................................................ 146
5.7.2 Virtual channels ...................................................................................... 148
5.7.3 Flow control............................................................................................. 150
5.7.4 Medium access controller........................................................................ 152
5.7.5 Broadcast flow control ............................................................................. 160
5.7.6 Framing ................................................................................................... 161
5.7.7 Error recovery ......................................................................................... 173
5.7.8 Data word identification state machine .................................................... 180
5.7.9 Link Reset state machine ........................................................................ 185
5.7.10 Link reset ................................................................................................ 188
5.8 Network layer ........................................................................................................ 190
5.8.1 Network layer responsibilities .................................................................. 190
5.8.2 SpaceFibre network ................................................................................ 191
5.8.3 Virtual networks ...................................................................................... 192
5.8.4 Links ....................................................................................................... 195
5.8.5 Packet format .......................................................................................... 195
5.8.6 Sending a packet .................................................................................... 196
5.8.7 Receiving a packet .................................................................................. 196
5.8.8 Routing switch ......................................................................................... 197
5.8.9 Packet addressing................................................................................... 202
5.8.10 Group adaptive routing ............................................................................ 205
5.8.11 Packet multicast ...................................................................................... 205
5.8.12 Broadcast messages ............................................................................... 206
5.8.13 SpaceFibre nodes ................................................................................... 207
5.8.14 SpaceFibre units ..................................................................................... 209
5.9 Management Information Base ............................................................................. 210
5.9.1 Management Information Base responsibilities ....................................... 210
5.9.2 Network management ............................................................................. 210
5.9.3 Configuration parameters ........................................................................ 210
5.9.4 Status parameters ................................................................................... 213
6 Service interfaces ............................................................................................... 216
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6.1 Overview .............................................................................................................. 216
6.2 Network layer service interface ............................................................................. 216
6.2.1 Network layer services ............................................................................ 216
6.2.2 Packet Transfer service .......................................................................... 216
6.2.3 Broadcast message service .................................................................... 217
6.3 Data Link layer service interface ........................................................................... 219
6.3.1 Data Link layer services .......................................................................... 219
6.3.2 Virtual Channel service ........................................................................... 219
6.3.3 Broadcast message service .................................................................... 220
6.3.4 Schedule synchronisation service ........................................................... 221
6.4 Physical layer service interfaces ........................................................................... 222
6.4.1 Physical layer services ............................................................................ 222
6.4.2 Transfer symbols service ........................................................................ 222
6.4.3 Control service ........................................................................................ 223
6.5 Management Information Base service interface .................................................. 224
6.5.1 Management Information Base services ................................................. 224
6.5.2 Link management service ....................................................................... 224
Bibliography ........................................................................................................... 226
FiguresFigure 3-1: Convention for first bit to be sent ........................................................................ 29
Figure 3-2: Graphical packet notation ................................................................................... 30
Figure 3-3: State diagram style ............................................................................................. 30
Figure 3-4: UML notation ...................................................................................................... 31
Figure 3-5: D/K notation for 8B/10B characters .................................................................... 32
Figure 4-1: Overview of SpaceFibre protocol stack .............................................................. 35
Figure 5-1: SpaceFibre protocol stack - single-lane .............................................................. 38
Figure 5-2: SpaceFibre protocol stack - multi-lane ................................................................ 38
Figure 5-3: Fills at the end of packets ................................................................................... 63
Figure 5-4: Fills at the start and end of a packet ................................................................... 64
Figure 5-5: Data frame format for a single lane .................................................................... 65
Figure 5-6: Idle frame format ................................................................................................ 65
Figure 5-7: Broadcast frame format ...................................................................................... 67
Figure 5-8: Interfaces to the Physical layer ........................................................................... 74
Figure 5-9: One direction of electrical Physical layer, showing series capacitors,
discharge resistors, and different grounds .......................................................... 76
Figure 5-10: Serial output signals ......................................................................................... 78
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Figure 5-11: Serial output test circuit .................................................................................... 79
Figure 5-12: Serial eye pattern mask .................................................................................... 79
Figure 5-13: Type-A electrical flight cable assembly ............................................................. 86
Figure 5-14: Type-A electrical flight connector saver ............................................................ 87
Figure 5-15: Type-C electrical EGSE cable assembly .......................................................... 90
Figure 5-16: Type-C electrical EGSE to flight adaptor cable assembly ................................. 91
Figure 5-17: One direction of fibre optic Physical layer, showing fibre optic transmitter,
receiver, connectors and cable ........................................................................... 94
Figure 5-18: One direction of active optical cable type of fibre optic Physical layer ............... 94
Figure 5-19: Electro-optical eye pattern for 1 Gbps to 5 Gbps transmitters ........................... 96
Figure 5-20: Electro-optical eye pattern for 1 Gbps to 10 Gbps transmitters ......................... 97
Figure 5-21: SpaceFibre lane comprising two Type-A fibre optic flight cable assemblies,
one for each direction ....................................................................................... 102
Figure 5-22: Type-B fibre optic flight cable assembly with one lane .................................... 104
Figure 5-23: Type-B fibre optic flight cable assembly with several lanes ............................ 105
Figure 5-24: Type-B fibre optic flight cable assembly for an asymmetric link ...................... 105
Figure 5-25: Type-C flight active optical cable assembly .................................................... 108
Figure 5-26: Interfaces to the Lane layer for a single lane link ............................................ 110
Figure 5-27: Interfaces to the Lane layer for a multi-lane link.............................................. 111
Figure 5-28: Lane initialisation state machine ..................................................................... 112
Figure 5-29: Receive synchronisation state machine .......................................................... 126
Figure 5-30: Interfaces to Multi-Lane layer ......................................................................... 129
Figure 5-31: Multi-Lane link with different number of lanes at each end ............................. 130
Figure 5-32: Words forming a row across a multi-lane link ................................................. 131
Figure 5-33: Spreading data across a multi-lane link .......................................................... 132
Figure 5-34: PAD control words in a multi-lane link ............................................................ 132
Figure 5-35: Row alignment across a multi-lane link ........................................................... 137
Figure 5-36: Alignment state machine ................................................................................ 138
Figure 5-37: Multi-Lane link incorporating some unidirectional lanes .................................. 141
Figure 5-38: Interfaces to the Lane layer for a single lane link ............................................ 147
Figure 5-39: Interfaces to the Lane layer for a multi-lane link.............................................. 147
Figure 5-40: Scrambler / de-scrambler ............................................................................... 161
Figure 5-41: Example of scrambling of a short data frame. ................................................. 163
Figure 5-42: Effect of scrambling on an idle frame .............................................................. 164
Figure 5-43: Examples of CRC calculation for a short data frame ...................................... 168
Figure 5-44: Illustration of bit ordering during 16-bit CRC calculation ................................. 169
Figure 5-45: Examples of CRC calculation for a broadcast frame and FCT ........................ 172
Figure 5-46: Illustration of bit ordering during 8-bit CRC calculation ................................... 172
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Figure 5-47: Receive Error state machine .......................................................................... 178
Figure 5-48: Data Word Identification state machine .......................................................... 181
Figure 5-49: Link Reset state machine ............................................................................... 186
Figure 5-50: Interfaces to the Network layer ....................................................................... 190
Figure 5-51: Components of a SpaceFibre network ............................................................ 191
Figure 5-52: Relationships of a SpaceFibre virtual network ................................................ 193
Figure 5-53: SpaceFibre packet format .............................................................................. 196
Figure 5-54: Components of a SpaceFibre routing switch .................................................. 198
Figure 5-55: Components and specialisations of a SpaceFibre node ................................. 208
Figure 5-56: Components and specialisations of a SpaceFibre unit ................................... 209
TablesTable 5-1: 5B/6B encoding ................................................................................................... 42
Table 5-2: 3B/4B encoding ................................................................................................... 43
Table 5-3: Lane control words .............................................................................................. 43
Table 5-4: Multi-Lane control words...................................................................................... 50
Table 5-5: Data framing control words .................................................................................. 52
Table 5-6: Flow control word ................................................................................................ 57
Table 5-7: Error recovery control words ................................................................................ 58
Table 5-8: Receive error indication control word ................................................................... 61
Table 5-9: SpaceFibre N-Char Symbols ............................................................................... 62
Table 5-10: Fill control character symbol .............................................................................. 63
Table 5-11: Meaning of K-codes ........................................................................................... 71
Table 5-12: Meaning of control word symbols ...................................................................... 72
Table 5-13: Serial output interface ........................................................................................ 76
Table 5-14: Serial eye pattern mask intervals 1 Gbps to 3,125 Gbps ................................... 80
Table 5-15: Serial eye pattern mask intervals above 3,125 Gbps to 6,25 Gbps .................... 80
Table 5-16: Driver characteristics 1 Gbps to 3,125 Gbps ...................................................... 81
Table 5-17 Driver characteristics above 3,125 Gbps to 6,25 Gbps ....................................... 82
Table 5-18 Serial input interface ........................................................................................... 83
Table 5-19: Type-A electrical flight cable assembly connector contact terminations ............. 86
Table 5-20: Type-A electrical flight connector saver connector contact terminations ............ 87
Table 5-21: Type-B electrical flight cable assembly connector contact terminations ............. 89
Table 5-22: Type-C electrical EGSE cable assembly connector contact terminations .......... 90
Table 5-23: Type-C electrical EGSE to flight adaptor cable assembly connector contact
terminations ....................................................................................................... 91
Table 5-24: Type-D electrical EGSE cable assembly connector contact terminations .......... 93
Table 5-25: Electro-optical characteristics for 1 Gbps to 5 Gbps transmitters ....................... 96
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Table 5-26: Electro-optical characteristics for 1 Gbps to 10 Gbps transmitters ..................... 97
Table 5-27: Electro-optical characteristics for 1 Gbps to 5 Gbps receivers ........................... 99
Table 5-28: Electro-optical characteristics for 1 Gbps to 10 Gbps receivers ......................... 99
Table 5-29: Connection of SpaceFibre lane using Type-A flight fibre optic cableassemblies ....................................................................................................... 102
Table 5-30: Type-B flight fibre optic cable assembly connector contact terminations for
each SpaceFibre lane ...................................................................................... 104
Table 5-31: Type-C flight active optical cable connector terminations for eachSpaceFibre lane ............................................................................................... 106
Table 5-32: Type-C flight active optical cable assembly connector contact terminations
for each SpaceFibre lane ................................................................................. 107
Table 5-33: Precedence for different qualities of service .................................................... 154
Table 5-34: Routing switch addresses ................................................................................ 200
Table 5-35: SpaceFibre configuration parameters .............................................................. 211
Table 5-36: SpaceFibre status parameters ......................................................................... 214
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