ISO 17458-4-2013 PDF
Name in English:
St ISO 17458-4-2013
Name in Russian:
Ст ISO 17458-4-2013
Original standard ISO 17458-4-2013 in PDF full version. Additional info + preview on request
Full title and description
ISO 17458-4:2013 — Road vehicles — FlexRay communications system — Part 4: Electrical physical layer specification. This part of ISO 17458 specifies the electrical physical layer for FlexRay networks used to connect automotive electronic control units (ECUs), including electrical characteristics, signalling principles and basic behaviour of bus driver and active star devices.
Abstract
ISO 17458-4:2013 defines the electrical physical layer for time-triggered FlexRay networks with data rates up to 10 Mbit/s using a dual‑wire differential medium. It covers signalling, permissible topologies (point‑to‑point, linear passive bus, passive star and active star), electrical transmission characteristics and basic functionality of Bus Driver (BD) and Active Star (AS) components.
General information
- Status: Published (confirmed during ISO periodic review).
- Publication date: February 2013 (Edition 1, 2013).
- Publisher: International Organization for Standardization (ISO).
- ICS / categories: 43.040.15 (Road vehicles — vehicle components and electronic data processing).
- Edition / version: Edition 1 (2013).
- Number of pages: 200 pages (official ISO metadata).
Scope
This standard specifies the electrical physical layer of the FlexRay communications system for road vehicles: differential signalling over dual wires, electrical interface characteristics for transceivers and active stars, timing and signalling constraints for reliable time‑triggered communication up to 10 Mbit/s, and topology variants supported (point‑to‑point, linear bus, passive/active star). It documents required electrical limits and basic behaviour of Bus Driver (BD) and Active Star (AS) devices to ensure interoperability within FlexRay systems.
Key topics and requirements
- Definition of the electrical physical layer for FlexRay (differential dual‑wire signalling, voltage and timing characteristics).
- Supported topologies: point‑to‑point, linear passive bus, passive star and active star.
- Maximum nominal data rate support and timing constraints for time‑triggered communication (up to 10 Mbit/s).
- Electrical interface requirements and parameters for Bus Driver (BD) and Active Star (AS) devices, including conformance-relevant characteristics.
- Requirements intended to enable interoperability of transceivers and active star components from different suppliers.
Typical use and users
Primary users: automotive OEMs, ECU and transceiver manufacturers, silicon vendors, test laboratories, vehicle integration engineers and suppliers implementing or validating FlexRay physical interfaces. Typical uses include design and verification of transceiver hardware, active star devices, cabling/topology planning, and as the normative electrical reference for conformance testing and interoperability.
Related standards
ISO 17458 is a multi‑part series for the FlexRay communications system. Related parts include: ISO 17458-1 (general information and use cases), ISO 17458-2 (data link layer specification), ISO 17458-3 (data link layer conformance test specification) and ISO 17458-5 (electrical physical layer conformance test specification). These parts together define protocol, conformance tests and physical requirements for FlexRay implementations.
Keywords
FlexRay, electrical physical layer, road vehicles, ECU, bus driver, active star, differential signalling, time‑triggered network, automotive network, conformance testing.
FAQ
Q: What is this standard?
A: ISO 17458-4:2013 is the ISO specification that defines the electrical physical (layer 1) requirements for FlexRay communications used in road vehicles, including signalling, electrical parameters and device behaviour for bus drivers and active stars.
Q: What does it cover?
A: It covers differential dual‑wire signalling, voltage and timing characteristics, supported network topologies (point‑to‑point, linear bus, passive/active star), and the electrical behaviour of Bus Driver (BD) and Active Star (AS) devices necessary for reliable FlexRay operation up to 10 Mbit/s.
Q: Who typically uses it?
A: Automotive OEMs, ECU and transceiver suppliers, semiconductor vendors, integration and test engineers, and conformance/test laboratories use this standard when designing, validating or testing the electrical interfaces of FlexRay systems.
Q: Is it current or superseded?
A: ISO 17458-4 was published in 2013 (Edition 1) and, according to ISO lifecycle metadata, has been maintained/confirmed in subsequent reviews; as of the latest ISO metadata it remains the published edition for Part 4. For procurement or compliance decisions always verify the ISO catalogue entry or national standards body for the most recent review status before relying on the text.
Q: Is it part of a series?
A: Yes — ISO 17458 is a multipart series for the FlexRay communications system (Part 1: general information/use cases; Part 2: data link layer; Part 3: data link conformance tests; Part 4: electrical physical layer; Part 5: electrical physical layer conformance tests).
Q: What are the key keywords?
A: FlexRay, physical layer, bus driver, active star, differential signalling, automotive network, ECU, conformance, time‑triggered, 10 Mbit/s.