What is ISO 21806‑12 about?
ISO 21806‑12 is part 12 of the multi-series standard that specifies the 50-Mbit/s balanced media physical layer for MOST (MOST50 bPHY), a synchronous time-division-multiplexing network.
ISO 21806‑12 specifies the applicable constraints and defines interfaces and parameters, suitable for the development of products based on MOST50 bPHY. Such products include electrical interconnects, integrated receivers, transmitters, electrical to balanced media converters, and balanced media to electrical converters.
Who is ISO 21806‑12 for?
ISO 21806‑12 on 50-Mbit/s balanced media physical layer for MOST is applicable to:
- Vehicle manufacturers
- Car infotainment manufacturers and developers
- Vehicle data services providers
- Developers of multimedia and infotainment systems
Why should you use ISO 21806‑12?
MOST enables the transport of high-quality service (QoS) audio and video together with packet data and real-time control to support modern automotive multimedia and similar applications. MOST is a function-oriented communication technology to network a variety of multimedia devices comprising one or more MOST nodes.
MOST is a synchronous time-division-multiplexing (TDM) network that transports different data types on separate channels at low latency. MOST supports different bit rates and physical layers. The network clock is provided with a continuous data signal.
MOST specifies mechanisms for sending anisochronous, packet-based data in addition to control data and streaming data. The transmission of packet-based data is separated from the transmission of control data and streaming data. None of them interfere with each other. MOST is a network that has mechanisms to transport the various signals and data streams that occur in multimedia and infotainment systems.
ISO 21806 series helps you implement the MOST communication technology into multimedia devices. It provides conformance test plans for implementing related test tools and test procedures.
ISO 21806‑12 establishes basic measurement techniques and actual parameter values for 50-Mbit/s balanced media physical layer.
The specified parameters in ISO 21806‑12 are minimum values so that you can ensure the functionality of the MOST network in a wide range of environmental conditions.
ISO 21806‑12 defines requirements covering the stability of the MOST network. A few of the examples are requirements regarding jitter transfer through MOST devices, jitter accumulation through the MOST network, and power state transitions. This will ensure that your MOST network is stable.
