SAE AS 5643 1-2004 S400 Copper Media Interface Characteristics Over Extended Distances《扩展距离上的S400铜介质界面特性》.pdf

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1、 AEROSPACE STANDARD S400 Copper Media Interface Characteristics Over Extended Distances SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability a

2、nd suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestion

3、s. Copyright 2004 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOC

4、UMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA) Fax: 724-776-0790 Email: custsvcsae.org SAE WEB ADDRESS: http:/www.sae.org Issued 2004-12 AS5643/1 TABLE OF CONTENTS 1. SCOPE 3 1.1 Purpose3 1.2 Application3 1.3 Interpretation3 2. DEFINITIONS AND APPLICABLE DOCUM

5、ENTS.4 2.1 Acronyms and Definitions 4 2.2 Government Documents 5 2.3 Non-Government Documents 5 2.4 Applicable References .5 3. IEEE-1394b REQUIREMENTS, S400 COPPER MEDIA.5 3.1 Cable6 3.1.1 Cable Requirements 6 3.1.2 Cable Termination7 3.1.3 Cable Interconnects .13 3.2 Bus Isolation.13 3.2.1 Link Te

6、rmination.14 3.3 Link Signal Specification 14 FIGURE 1 Connector Pin-out, MIL-DTL-38999 Series 3 Shell Size A (9) .7 FIGURE 2 Connector Pin-out, MIL-DTL-38999 Series 3 Shell Size B (11) .8 FIGURE 3 Connector Pin-out, MIL-DTL-38999 Series 3 Shell Size C (13) .9 FIGURE 4 Example Cable Termination Meth

7、od for MIL-DTL-38999 Series 3 Connector With A (9), B (11), and C (13) Shell Sizes 10 FIGURE 5 Example of ARINC 600 Style Inserts with #8 Contacts11 SAE AS5643/1 - 2 - FIGURE 6 Quadrax PCB Version Installed in ARINC 600 Style Connector 12 FIGURE 7 Example of MIL-DTL-38999 Connector Inserts That Supp

8、ort Quadrax Inserts12 FIGURE 8 Link Measurement Points (Half Connection is Shown) 14 TABLE 1 Cable Requirements.6 TABLE 2 ARINC 600 Series Insert Options for Size 8 Contacts .11 TABLE 3 Quadrax Connector Pin-out13 TABLE 4 Link Signal Transmitter Characteristics (TP2)15 TABLE 5 Link Signal Receiver C

9、haracteristics (TP3)16 SAE AS5643/1 - 3 - 1. SCOPE: This SAE Aerospace Standard (AS) establishes guidelines for the use of IEEE-1394b as a data bus network in military and aerospace vehicles. It encompasses the data bus cable and its interface electronics for a system utilizing S400 over copper medi

10、um over extended lengths. This document contains extensions/restrictions to “off-the-shelf” IEEE-1394 standards, and assumes that the reader already has a working knowledge of IEEE-1394. This document does not identify specific environmental requirements (electromagnetic compatibility, temperature,

11、vibration, etc.); such requirements will be vehicle-specific and even LRU-specific. However, the hardware requirements and examples contained herein do address many of the environmental conditions that military and aerospace vehicles may experience. One should reference the appropriate sections of M

12、IL-STD-461E for their particular LRU, and utilize handbooks such as MIL-HDBK-454A and MIL-HDBK-5400 for guidance. This document is referred to as a “slash sheet” and accompanies the SAE Sxxxx base standard. 1.1 Purpose: The purpose of this document is to define an approach to using IEEE-1394b over e

13、xtended distances in safety-critical/mission-critical applications for military and aerospace vehicles. This document is controlled and maintained by the SAE with technical support from subsystem vendors. 1.2 Application: The information herein may be used to assist the design, fabrication, and main

14、tenance of the subsystems that interface via the vehicles network. 1.3 Interpretation: The following interpretations shall be placed upon these words, unless stated otherwise, where they are used in this document. May: An allowed action. Shall: A mandatory requirement. Should: A recommended action.

15、Will: A declaration of intent. SAE AS5643/1 - 4 - 2. DEFINITIONS AND APPLICABLE DOCUMENTS: 2.1 Acronyms and Definitions: C: Celsius dB: Decibels DC: Direct Current Ft: Feet Link: The point-to-point connection between two ports LRU: Line-Replaceable Unit MBd: Megabaud Mbits: Megabits Mb/s: Megabits P

16、er Second MHz: Megahertz mV: Millivolts N/A: Not Applicable pF: Picofarad ppm: Parts Per Million ps: Picoseconds V: Volts VRMS: Volts Root Mean Square Vp-p: Voltage, Peak-To-Peak : Ohms SAE AS5643/1 - 5 - 2.2 Government Documents: The following government documents form a part of this document to th

17、e extent specified herein. MIL-STD-461E Department of Defense Interface Standard, Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment MIL-HDBK-454A Department of Defense Handbook, General Guidelines for Airborne Electronic Equipment MIL-HDBK-5400

18、Military Handbook, Electronic Equipment, Airborne, General Guidelines 2.3 Non-Government Documents: The following non-government documents form a part of this document to the extent specified herein. IEEE Std 1394-1995 IEEE Standard for a High Performance Serial Bus IEEE Std 1394a-2000 IEEE Standard

19、 for a High Performance Serial Bus, Amendment 1 IEEE Std 1394b-2002 IEEE Standard for a High Performance Serial Bus, High Speed Supplement 2.4 Applicable References: None. 3. IEEE-1394B REQUIREMENTS, S400 COPPER MEDIA: The requirements are based on the IEEE Standard for a High Performance Serial Bus

20、 (IEEE-1394-1995), Amendment One (IEEE-1394a-2000), and High-Speed Supplement (IEEE-1394b-2002). This section delineates the options selected and interprets any ambiguities. SAE AS5643/1 - 6 - 3.1 Cable: 3.1.1 Cable Requirements: Cable shall be of quad construction and contain two differential pair

21、transmission lines (positioned on orthogonal axes) with nominal differential impedance of 110 Ohms. Insulated wires for the two differential pairs in the cable shall be color-coded as follows: pair 1 consists of one Blue wire and one Orange wire (Blue x Orange), and pair 2 consists of one Red wire a

22、nd one Green wire (Red x Green). For the Blue x Orange pair, the blue wire connects to the positive signal and the orange wire connects to the negative of a given port; for the Red x Green pair, the Red wire connects to the positive signal and the green wire connects to the negative of a given port.

23、 When connecting between two 1394b nodes, connect from the transmit (TX) of one port to the receive (RX) of the other. For example, for the Blue x Orange pair, the Blue wire connects to TX+ and the Orange wire connects to TX- on one end of the cable, and the Blue wire connects to RX+ and the Orange

24、wire connects to RX- on the other end of the cable. Cable requirements are summarized in Table 1. TABLE 1 - Cable Requirements Dielectric Withstanding Voltage Conductor/Conductor (Maximum) 1500 VRMS Dielectric Withstanding Voltage Conductor/Shield (Maximum) 1000 VRMS Capacitance (Typical) Between Pa

25、irs, Ground Floating 12 pF/ Ft Differential Impedance (100 to 500 MHz) 110 6 Temperature Range -55 C to +200 C Insertion Loss at 250 MHz (Maximum, With Active Transformer) 6.0 dB Insertion Loss at 250 MHz (Maximum, With Passive Transformer) 2.0 dB Time Delay Skew (Maximum) Within Pairs 200 ps If des

26、ired, two additional wires may be utilized in the same cable in order to power the 1394b circuitry of a LRU; use White wire for positive (power) and Black wire for negative (ground). Wire gauge is dependent upon the LRU power requirements and the cable length. Refer to section 4.2.1B.2.1 of IEEE-139

27、4b-2002 for guidance on 6-wire implementations. SAE AS5643/1 - 7 - 3.1.2 Cable Termination: 3.1.2.1 MIL-DTL-38999 Option: The recommended connector type is MIL-DTL-38999 Series 3; the connector shell size may be A (9), B (11), or C (13), depending on the number of 1394b ports at a given LRU or vehic

28、le bulkhead. The connectors shall use #22D contacts, with pins typically used at the LRU and #22D contact sockets by the vehicle cabling. For each connector shell size described in the following sections, all pin locations designated as “not used” shall remain empty and not be utilized for other pur

29、poses. 3.1.2.1.1 MIL-DTL-38999, Shell Size A: When cabling containing a single 1394b port needs to pass through bulkheads, a MIL-DTL-38999 Series 3 connector, shell size A (9) may be used (insert arrangement 35, with #22D contacts), as depicted in Figure 1. FIGURE 1 - Connector Pin-out, MIL-DTL-3899

30、9 Series 3 Shell Size A (9) 123456Pin Signal Name Description1 Port X1 - TA Port X1 Receive +2 Port X1 - TA* Port X1 Receive -3 Port X1 - TB Port X1 Transmit +4 5 6 Port X1 - TB*Not Used Not UsedPort X1 Transmit N/A N/ASAE AS5643/1 - 8 - 3.1.2.1.2 MIL-DTL-38999, Shell Size B: Typically, LRU connecti

31、ons will use a MIL-DTL-38999 Series 3 Connector shell size B (11), insert arrangement 35, with #22D contacts, as depicted in Figure 2. FIGURE 2 - Connector Pin-out, MIL-DTL-38999 Series 3 Shell Size B (11) Note that the above arrangement utilizes all three ports. It is recommended that all LRUs prov

32、ide access to all three 1394b ports of a node; even if a LRU is initially planned to be a leaf node, having access to all three ports gives the system integrator flexibility to later change the system architecture and/or to provide a connection point for test instrumentation. 1112131234567 8 9 10Por

33、t 0Port 1 Port 2Pin Signal Name Description1 Not Used N/A2 Port 2 - TA Port 2 Receive +3 Port 2 - TA* Port 2 Receive -4 Port 2 - TB Port 2 Transmit +5 Port 2 - TB* Port 2 Transmit -6 Port 1 - TA Port 1 Receive +7 Port 1 - TA* Port 1 Receive -8 Port 1 - TB Port 1 Transmit +9 Port 1 - TB* Port 1 Trans

34、mit -10 Port 0 - TA Port 0 Receive +11 Port 0 - TA* Port 0 Receive -12 Port 0 - TB Port 0 Transmit +13 Port 0 - TB* Port 0 Transmit -SAE AS5643/1 - 9 - 3.1.2.1.3 MIL-DTL-38999, Shell Size C: In applications where up to five 1394b ports must be terminated, a MIL-DTL-38999 Series 3 Connector shell siz

35、e C (13), insert arrangement 35, with #22D contacts may be used, as depicted in Figure 3. 11121312345678910Port X1Port X2141516171819202122Port X3Port X4Pin Signal Name Description1 Port X1 - TA Port X1 Receive +2 Port X1 - TA* Port X1 Receive -3 Port X1 - TB Port X1 Transmit +4 Port X1 - TB* Port X

36、1 Transmit -6 Port X2 - TA Port X2 Receive +7 Port X2 - TA* Port X2 Receive -8 Port X2 - TB Port X2 Transmit +9 Port X2 - TB* Port X2 Transmit -11 Port X3 - TA Port X3 Receive +12 Port X3 - TA* Port X3 Receive -13 Port X3 - TB Port X3 Transmit +14 Port X3 - TB* Port X3 Transmit -17 Port X4 - TA Port

37、 X4 Receive +18 Port X4 - TA* Port X4 Receive -19 Port X4 - TB Port X4 Transmit +22 Port X4 - TB* Port X4 Transmit -16 Port X5 - TA Port X5 Receive +15 Port X5 - TA* Port X5 Receive -21 Port X5 - TB Port X5 Transmit +20 Port X5 - TB* Port X5 Transmit -5,10 Not UsedPort X5FIGURE 3 - Connector Pin-out

38、, MIL-DTL-38999 Series 3 Shell Size C (13) N/A SAE AS5643/1 - 10 - 3.1.2.1.4 MIL-DTL-38999 Cable Termination: Figure 4 depicts an example of a cable termination method for MIL-DTL-38999 Series 3 connectors with A (9), B (11), and C (13) shell sizes and one to five cable assemblies. Quad CableBraid S

39、ock Termination5.7 IN. +/- 0.12.5 IN. +/- 0.5 IN.EMI BandMetal BraidSockThree CableAssembliesStarReceptacleThree Position.5 IN.1.5 IN. +/- 0.1Braid Terminator3.30 IN. MaxBraid TerminatorQuad CableEMI BandMetal BraidSockOne CableAssembly2.5 IN. +/- 0.5 IN.2.5 IN. +/- 0.5 IN.EMI BandMetal BraidSockFou

40、r or FiveCableAssembliesStarReceptacleFour or FivePositionBackshell:D ShellStarReceptacleOne PositionC to DAdapterA to CAdapterBackshell:C ShellBackshell:C ShellB to CAdapterPlugBraid Sock TerminationFIGURE 4 - Example Cable Termination Method for MIL-DTL-38999 Series 3 Connector With A (9), B (11),

41、 and C (13) Shell Sizes SAE AS5643/1 - 11 - 3.1.2.2 Quadrax MIL-DTL-38999 and ARINC 600 High Density Option: MIL-DTL-38999 and ARINC Style connectors provide the ability to increase Input/Output density by providing the option to support multiple and independent 1394b ports within the same connector

42、 insert. The Quadrax insert contains four #24 AWG pin contacts with a 360 shield. Quadrax contacts are available as inserts that mount into standard #8 cavities in ARINC or MIL-DTL-38999 style connectors or as Printed Circuit Board (PCB) contact version that can be soldered directly to a board 3.1.2

43、.2.1 ARINC 600 Quadrax Options: Table 2 and Figure 5 illustrate examples of ARINC 600 style connector inserts that have size #8 contacts and support the use of Quadrax inserts. Figure 6 shows the Quadrax PCB Contact installed into an ARINC 600 connector. TABLE 2 - ARINC 600 Series Insert Options for

44、 Size 8 Contacts ARINC Shell Size Insert Arrangement Quantity of Size 8 Contacts ARINC 600 Shell Size 1 30T2 2 ARINC 600 Shell Size 2/3 120T2 2 ARINC 600 Shell Size 2/3 6Q6 6 ARINC 600 Shell Size 2/3 28Q8 8 ARINC 600 Shell Size 2/3 10Q10 10 ARINC 600 Shell Size 2/3 11Q11 11 FIGURE 5 - Example of ARI

45、NC 600 Style Inserts with #8 Contacts SAE AS5643/1 - 12 - FIGURE 6 - Quadrax PCB Version Installed in ARINC 600 Style Connector 3.1.2.2.2 MIL-DTL-38999 Quadrax Options: Figure 7 illustrates examples of MIL-DTL-38999 style connector inserts that have size #8 contacts and support the use of Quadrax in

46、serts. FIGURE 7 - Example of MIL-DTL-38999 Connector Inserts that Support Quadrax Inserts SAE AS5643/1 - 13 - 3.1.2.2.3 Quadrax Pin Definitions: The Quadrax connector pin-out is defined in Table 3. TABLE 3 - Quadrax Connector Pin-out Pin (Source) Signal Name (Source) Description (Source) Pin (Destin

47、ation) Signal Name (Destination) Description (Destimation) 1 TPA Receive + 2 TPB Transmit + 2 TPB Transmit + 1 TPA Receive + 3 TPA* Receive - 4 TPB* Transmit - 4 TPB* Transmit - 3 TPA* Receive - NOTE: The Quadrax pin-out definition is for a single 1394b port. Each Quadrax insert supports one port su

48、rrounded by a 360 degree shield. The shield is terminated to the ground. For subsystems that require additional node/ports, a separate Quadrax insert is used for each port. All ports must be configured as per the pin-out described in Table 3. 3.1.3 Cable Interconnects: The differential-mode discrete

49、 impedance of the signal pairs within the mated connector section shall be measured by TDR with the connector-only differential test fixture at an 80 ps rise time. The recommended procedure is described in B.2 of IEEE Std 1394a-2000 with the following exception in test condition: evaluate differential impedance over a 625 ps exception window with test points at Connector insertion plane -25 ps Connector insertion plane (reference point, so offset will be 0 ps) Connector insertion plane +100 ps Connector insertion plane +300 ps Connector insertion plane +600 ps The