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Microchip's MOST INICs enable Audi sedan cockpit infotainment

Posted: 17 Dec 2015     Print Version  Bookmark and Share

Keywords:Microchip Technology  Audi  MOST  infotainment  interface controller 

Microchip Technology Inc. has revealed that Audi is using MOST technology to network the high-end Audi virtual cockpit system in the latest model year of its A4 sedans, which follows a similar deployment in its Q7 SUV and TT Coupe models. In particular, Audi is using Microchip's OS81110 and OS81118 MOST150 intelligent network interface controllers (INICs) that deliver 150Mb/s performance and support all MOST network data types. The OS81118 also includes a High Speed USB 2.0 interface (PHY/HSIC) to seamlessly connect with the virtual cockpit's SoC processor.

To date, nearly 200 million MOST interface controllers have been installed in 194 car models since 2001. Audi and all major carmakers have for many years successfully implemented MOST technology in their multi-node infotainment networking systems, as it provides a field-proven, low-risk, whole-system solution. The MOST150 standard also provides Ethernet or Internet-protocol networking capabilities.


This latest version of MOST technology continues to predictably and efficiently transport video, audio, packet and control data throughout the vehicle without time-synchronisation protocols, using dedicated channels for minimal processor overhead in the main infotainment control unit processors.

MOST150 also provides 150Mb/s performance and proven electromagnetic-compatibility (EMC) behaviour. All MOST INICs boast industry-standard hardware interfaces to processor and peripheral devices for the efficient routing of streaming, packet and control data, which greatly simplifies module designs. End users can immediately access the vehicle's infotainment system, due to the MOST INIC's ultra-fast network startup behaviour, noted the company.

MOST150 technology block diagram

MOST150 technology block diagram

The MOST Cooperation standards enable automotive OEMs and their Tier 1 suppliers with a proven and well-supported methodology for defining and implementing high-bandwidth infotainment and advanced driver assistance systems (ADAS), including a standard physical layer and a robust method for system management and control with superior reliability and Quality of Service (QoS). Using MOST technology also reduces weight for easier compliance with environmental regulations.

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