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MOST150 coax physical standard 1.0 released

Posted: 12 Apr 2011     Print Version  Bookmark and Share

Keywords:coaxial cable  physical layer 

The MOST Cooperation, the standardisation organisation for the Media Oriented Systems Transport (MOST), unveils the MOST150 coaxial cable-based Electrical Physical Layer Sub-Specification Rev. 1.0. Its principal structure is similar to the existing MOST150 optical physical layer specification. Both physical layers are interoperable: MOST150 supports various physical layers and enables various topology options.

"This MOST150 coax physical standard complements the existing MOST150 optical physical layer in the infotainment domain, especially for OEMs who have stringent preferences in the electrical physical layer," stated Wolfgang Bott, Technical Coordinator of the MOST Cooperation. "In addition, this new standard opens the way into other vehicle domains, i.e. it fits into the driver assistance domain, as this physical layer is able to provide bi-directional communication and power supply on the same cable." This specification was derived in a straight forward process from the MOST Physical Layer Basic Specification.

The advantages of the MOST150 optical physical layer are maintained. MOST150 is a multi-channel network (control data, synchronous and packet channel) which allows the parallel usage of all these services through one network. It provides an isochronous channel for video data transmission, among others. It also enables IP data communication, providing the automotive-ready Ethernet channel according to IEEE 802.3 with freely configurable bandwidth from 0 to nearly 150Mbit/s. MOST150 supports the safety layer concept to enable fail-safe application up to SIL level 3 according to IEC 61508 and ASIL C according to ISO 26262. Meeting these requirements, and due to its inherent synchronicity, the MOST standard provides an effective and cost-efficient network solution that is resilient and future-proof.

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