The new intelligent network interface controller using MOST® technology supports daisy-chain communication in automotive applications.

Microchip Technology Inc. today announced the release of its latest MOST150 Intelligent Network Interface Controller (INIC). In addition to ring topology, this device supports full-duplex communication in a daisy-chain configuration for Media-Oriented Systems Transport (MOST®) networks at the coaxial physical layer for automakers and Tier 1 suppliers. Using a full-duplex daisy-chain network, a single cable is sufficient to connect two adjacent devices in the network, reducing the number of cables and connectors on each network's back-end path and eliminating the need for the return line used to connect the last node to the first. This reduces wiring and component count, thereby lowering system costs and vehicle weight, which can impact Corporate Average Fuel Economy (CAFE) targets and other fuel efficiency compliance requirements.

Using Microchip's OS81119 INIC, customers can simplify the network architecture of automotive infotainment systems by using integrated coaxial physical layer (cPHY), optical physical layer (oPHY), daisy-chain topology, or innovative hybrid combinations. Customers currently using the MOST150 system can quickly migrate to new topologies or daisy-chains with minimal hardware and software redesign.

"This is the first time a customer has used a daisy-chain configuration to build a MOST150 network," said Dan Termer, vice president of Microchip's Automotive Information Systems business unit. "The MOST network is a proven standard used in more than 200 vehicle models from all major OEMs. As this new device demonstrates, continuous innovation now makes MOST even more cost-effective."

The OS81119 INIC not only integrates the cPHY but also supports a USB 2.0 high-speed user interface. This integration further reduces the number of system components and lowers overall costs. Using the USB standard and the corresponding standardized MOST Linux® drivers further shortens time-to-market. Furthermore, leveraging the open-source Linux operating system and OS81119 drivers helps customers reduce costs. By using the standard application programming interface (API), customers can minimize the risks associated with application problems.

MOST technology is the choice of many automakers and Tier 1 suppliers for in-vehicle networks. It is specifically designed for infotainment and telematics applications such as smart antennas, front-end units, amplifiers, digital trunking, rear-seat entertainment, advanced driver assistance systems (ADAS), driver/passenger information systems, and public transportation infotainment and information systems. For more information on this device, please see: www.microchip.com/OS81119.

Development Support

The following tools and software support OS81119:

• MOST NetServices V3.2.x

• MOST Linux Drivers

• Microchip Unified Centralized Network Protocol Stack (UNICENS)

• K2L OS81119 USB Application Board

• MOST150 Lightweight Circuit Board Series

• K2L OptoLyzer® MOCCA Compact 150c and 150o

• K2L INIC Explorer and Microchip Automotive Target Manager (MATM), including OS81119 profiles and software

• K2LMediaLB® Bus Analyzer

Supply

The OS81119 is packaged in a QFN88 package. This device is currently in mass production and available in quantities starting from 10,000 units. For more information, please contact a Microchip sales representative or an authorized distributor worldwide. To purchase the products mentioned, visit the easy-to-use microchipDIRECT online store or contact an authorized Microchip distributor.