What is ISO 21111‑3 about?
ISO 21111‑3 is part three of the multi-series standard that provides supplemental specifications to a physical layer capable of transmitting 1 Gbit/s over plastic optical fibre compliant with ISO/IEC/IEEE 8802-3:2017/Amd 9:2018, with specific application to communications inside road vehicles.
Additionally, there is a test plan specified for conformance testing. The test plan includes test cases to assure compliance of an IUT with the functionality specified in ISO 21111‑3.
ISO/IEC/IEEE 8802-3:2017/Amd 9:2018 is considered indispensable for the application of ISO 21111‑3.
The supplemental specifications include wake-up and synchronised link sleep functionality.
The specification includes the sublayers, service interfaces, and state diagrams that support the functionality. The supplemental specifications are collected in protocol implementation conformance statement (PICS).
The requirements specified in ISO/IEC/IEEE 8802-3:2017/Amd 9:2018 and in ISO 21111‑3 constitute the complete PICS that specifies the GEPOF physical entity functionality.
Note-
The optical component requirements and test methods for optical 1-Gbit/s transmission of in-vehicle Ethernet are not within the scope of this document.
Who is ISO 21111‑3 for?
ISO 21111‑3 on optical 1-Gbit/s physical entity requirements and conformance test plan is useful for:
- Vehicle manufacturers
- In-vehicle ethernet providers
- Telecom network providers
- Vehicle testing facilities
Why should you use ISO 21111‑3?
As the use of the internet has increased devices are becoming smarter. Cars too are now connected to the internet with in-vehicle ethernet. The ISO 21111 series includes in-vehicle Ethernet requirements and test plans that are disseminated in other International Standards and complement them with additional test methods and requirements.
ISO 21111‑3 specifies supplemental requirements to a physical layer capable of transmitting 1-Gbit/s over plastic optical fibre compliant with ISO/IEC/IEEE 8802-3, with specific application to communications inside road vehicles, and a test plan for physical entity conformance testing.
ISO 21111‑3 provides the service primitives provided by the IEEE 802.3bv physical layer and used by the FFME sublayer. ISO 21111‑3 shows the service primitives of the 802-3bv service interface and the relationship with the GEPOF entity sublayers.
ISO 21111‑3 gives a test case that verifies the IUT that enters into LPI mode continues the normal reception of GMII transactions when normal operation is resumed. Moreover, this test case checks that the assert LPI transactions are transparently transmitted independently of the value of the remote EEE ability bit located in bit 2 of the MDIO register 3.519.
