Overview
IEC 62228-7:2026 is an international standard developed by the International Electrotechnical Commission (IEC) for the electromagnetic compatibility (EMC) evaluation of CXPI transceiver integrated circuits (ICs). Targeting both standalone CXPI transceivers and ICs with embedded CXPI transceivers, this standard specifies test and measurement methods under network application conditions. It defines the following aspects to ensure comprehensive EMC validation:
- Test configurations and setups
- Test conditions and signals
- Failure criteria and evaluation procedures
- Test boards for CXPI transceivers
This document is highly relevant for engineers, design and quality assurance professionals, and manufacturers engaged in developing or certifying automotive electronics, particularly those using CXPI (Clock Extension Peripheral Interface) communications.
Key Topics
EMC Evaluation Scope
IEC 62228-7:2026 covers EMC performance for CXPI transceivers in several critical areas:
- Emission of RF Disturbances: How much undesirable radio frequency energy is emitted by the IC, potentially impacting nearby circuits.
- Immunity to RF Disturbances: The ability of the IC to operate correctly in the presence of external RF noise.
- Immunity to Impulses: Resistance to transient electrical disturbances.
- Immunity to Electrostatic Discharge (ESD): The ability to withstand and operate reliably after exposure to ESD events.
Test Methods and Conditions
- Modes of Operation: Tests are conducted in various power and network conditions relevant to automotive CXPI applications.
- Test Configurations: Includes both powered (functional) and unpowered (passive, for ESD) test modes, using representative evaluation test boards.
- Test Signals: Defined signals and scenarios to ensure repeatable and comprehensive assessment.
- Failure Criteria: Clear, standardized outcomes for pass/fail determinations enhance reliability and comparability.
Technical Updates in 2026 Edition
- Updated terminology: "Commander" replaces "Master"; "Responder" replaces "Slave."
- Improved test configuration for embedded transceivers and clarified associated diagrams.
- Revised test signal definitions for specific transceiver types.
- New example test limits for real-world automotive scenarios.
Applications
IEC 62228-7:2026 is especially practical for:
- Automotive Electronics: Ensuring EMC robustness in vehicles using CXPI networks for body electronics, control units, and sensor communications.
- IC Design and Manufacturing: Providing guidelines to test, evaluate, and certify CXPI ICs during development and production.
- Compliance and Certification: Supporting regulatory approval processes for automotive electronics by providing standardized EMC testing procedures.
- System Integration: Assisting OEMs and system integrators in verifying the EMC performance of complete vehicle networks.
Following IEC 62228-7:2026 ensures automotive systems are less susceptible to electromagnetic interference, reducing the risk of unexpected malfunctions and supporting reliability in safety-critical applications.
Related Standards
IEC 62228-7:2026 references and aligns with a suite of international standards that detail EMC testing methods, CXPI protocol specifications, and component requirements for automotive applications. Key related standards include:
- IEC 61967 series: Methods for measuring electromagnetic emissions from integrated circuits.
- IEC 62132 series: Methods for measuring electromagnetic immunity of integrated circuits.
- IEC 62215 series: Methods for testing immunity to electrical impulses.
- IEC 62228-1: General conditions and definitions for EMC evaluation of transceivers.
- ISO 7637-2: Road vehicle conducted electrical transient emissions.
- ISO 10605: Methods for assessing electrostatic discharge (ESD) effects in road vehicles.
- ISO 20794-4 and ISO 20794-7: Specifications and testing for the CXPI protocol’s physical and data link layers.
By following IEC 62228-7:2026 alongside these related standards, stakeholders ensure a robust, harmonized approach to EMC compliance for CXPI-based automotive systems.