Zlg's Comprehensive ISO11898 Protocol Suite (Expert Recommendation) - User Guide (1)
Summary
This industry standard defines the technical specifications for High-Speed Medium Access Units (HS-MAU) used in automotive Controller Area Network (CAN) systems. This essential guide covers the functional description, electrical mandates, and rigorous conformance testing required for reliable CAN bus communication in vehicles. It is vital reference material for engineers, manufacturers, and designers creating or validating robust, high-speed vehicle networking components.
Page 1 Text Content
INTERNATIONAL ISO STANDARD 11898-2
First edition 2003-12-01
Road vehicles — Controller area network (CAN) — Part 2: High-speed medium access unit Véhicules routiers — Gestionnaire de réseau de communication (CAN) — Partie 2: Unité d'accès au support à grande vitesse
Reference number ISO 11898-2:2003(E)
© ISO 2003
Copyright International Organization for Standardization
Provided by IHS under license with ISO
Not for Resale No reproduction or networking permitted without license from IHS
Page Summary Contents For Zlg's Comprehensive ISO11898 Protocol Suite (Expert Recommendation) - User Guide (1)
Page 1
INTERNATIONAL ISO STANDARD 11898-2 First edition 2003-12-01 Road vehicles — Controller area network (CAN) — Part 2: High-speed medium access unit Véhicules routiers — Gestionnaire de réseau de communi...
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ISO 11898-2:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the type...
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ISO 11898-2:2003(E) Contents Page Foreword............................................................................................................................................................ i...
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ISO 11898-2:2003(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International St...
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INTERNATIONAL STANDARD ISO 11898-2:2003(E) Road vehicles — Controller area network (CAN) — Part 2: High-speed medium access unit 1 Scope This part of ISO 11898 specifies the high-speed (transmission r...
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ISO 11898-2:2003(E) 3.3 differential internal capacitance (of a CAN node) Cdiff capacitance seen between CAN_L and CAN_H during the recessive state when the CAN node is disconnected from the bus 3.4 d...
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ISO 11898-2:2003(E) 4 Abbreviated terms CAN controller area network ECU electronic control unit HS-MAU high-speed medium access unit IC integrated circuit MAU medium access unit MDI medium dependent i...
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ISO 11898-2:2003(E) A dominant bit is sent to the bus if the bus drivers of at least one unit are switched on. This induces a current flow through the terminating resistors and, consequently, a differ...
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ISO 11898-2:2003(E) Key L bus length l cable stub length d node distance Figure 3 — Wiring network topology 6 Conformance tests 6.1 General The conformance of the MAU shall be tested in accordance wit...
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ISO 11898-2:2003(E) 6.3 Dominant output of CAN node 6.3.1 General The dominant output voltages VCAN_H and VCAN_L shall be taken as shown in Figure 5; they are measured while the CAN node is transmitti...
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ISO 11898-2:2003(E) 6.4 Dominant input threshold of CAN node The testing of the input threshold of a CAN node to detect a dominant bit shall be undertaken as shown in Figure 7 with the node set to cyc...
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ISO 11898-2:2003(E) Key 1 CAN node with termination network 2 Ground Figure 8 — Measurement of Rin while CAN node protocol IC is set to bus idle 6.5.2 Internal differential resistor The measurements o...
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ISO 11898-2:2003(E) Figure 10 — Measurement of input capacitance, Cbusin, during the recessive state Figure 11 — Measurement of input capacitance, Cin, of a CAN node at the recessive state During the ...
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ISO 11898-2:2003(E) 6.7 Measurement of the internal delay time The measurement of the internal delay time tnode shall be undertaken by applying a dominant bit at the CAN bus inputs of an error active ...
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ISO 11898-2:2003(E) Values in volts Figure 13 — Synchronization by overwriting recessive bits by dominant bit of test unit 7 Electrical specification of HS-MAU 7.1 General The following electrical spe...
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ISO 11898-2:2003(E) Table 1 — Bus voltage parameters for recessive state Value Parameter Notation Unit Condition min. nom. max. VCAN_H V 2,5 7,0 Measured with respect to the individual ground of Commo...
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ISO 11898-2:2003(E) Table 4 — DC parameters for recessive output of CAN node Value Parameter Notation Unit Condition min. nom. max. VCAN_H V 2,0 2,5 3,0 Output bus voltage no load VCAN_L V 2,0 2,5 3,0...
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ISO 11898-2:2003(E) 7.3 CAN node 7.3.1 General The parameters given in Table 3 shall be tested at the CAN_L and CAN_H pins of each CAN node, with the CAN node disconnected from the bus (see 6.2 and 6....
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ISO 11898-2:2003(E) Key ts Random time. a Actual range of VCAN_H of the bus line. b Range of VCAN_H for reception. Figure 16 — Valid voltage range of VCAN_H for monitoring recessive bus state, and for...
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ISO 11898-2:2003(E) Key ts Random time. a Range of VCAN_H. Figure 17 — Valid voltage range of VCAN_H during dominant state of CAN node disconnected from bus if VCAN_L varies from min. to max. voltage ...
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ISO 11898-2:2003(E) Key ts Random time. a Actual range of VCAN_H of the bus line. b Range of VCAN_H for reception. Figure 18 — Valid voltage range of VCAN_H for monitoring dominant bus state, and for ...
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ISO 11898-2:2003(E) The test voltages UST are specified in Table 7. Table 7 — Test voltages Test voltage UST Parameter Unit 1st voltage 2nd voltage UL V 5 0 UH V 0 5 7.4 MDI specification, connector p...
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ISO 11898-2:2003(E) Table 9 — Physical media parameters of a pair of wires (shielded or unshielded) Value Parameter Notation Unit Condition min. nom. max. Impedance Z Ω 95 120 140 Measured between two...
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ISO 11898-2:2003(E) Table 12 — Bus failure detection Description of bus failure Behaviour of network a Quality of specification b One node becomes disconnected from the bus The remaining nodes continu...
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ISO 11898-2:2003(E) Figure 19 — Possible failures of bus lines Copyright International Organization for Standardization © ISO 2003 — All rights reserved 21 Provided by IHS under license with ISO Not f...
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ISO 11898-2:2003(E) ICS 43.040.15 Price based on 21 pages Copyright International Organization for Standardization © ISO 2003 — All rights reserved Provided by IHS under license with ISO Not for Resal...
Manual Details
| Brand | Comprehensive |
|---|---|
| Pages | 26 |
| File Size | 586.17 KB |
| Published | May 18, 2026 |
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Frequently Asked Questions
What does iso 11898-2 cover?
It is an international standard for the Controller Area Network (CAN) – Part 2: High-speed medium access unit.
Where can I find information on MAU functionality?
Details are provided in Section 5, titled 'Functional description of MAU'.
What testing data is available regarding CAN nodes?
The manual includes sections for conformance tests, covering recessive and dominant output of CAN nodes.
How is the physical connection specified?
Section 5.4 details the 'Physical medium specification,' while section 5.3 covers the MDI (Medium Dependent Interface) specification.
What are the electrical specifications for HS-MAU?
The document provides specific details for the Electrical specification of HS-MAU in Section 7.