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FlexRay is a high-speed serial [Synchronous and Asynchronous] communication system for in-vehicle networks [Control Systems] using Point-to-Point [Star topology] links, at 10Mbps [Fault-Tolerant] over Un-shielded Twisted Pair [UTP] or Shielded Twisted Pair [STP] cable. The FlexRay bus defines the Physical layer [Electrical and Optical] and Protocol. FlexRay is a fault tolerant bus and provides deterministic data transmission at a Baud-Rate of between 500kbps to 10Mbps with a 24 bit CRC. FlexRay is a time-triggered bus; electronic systems communicate continually in pre-defined time slots on a data bus. The Electrical Physical layer uses Non Return to Zero (NRZ) bit encoding for data communication on an Optical bus. The use of NRZ encoding ensures compact messages with a minimum number of transitions and high resilience to external disturbance. FlexRay is an extended protocol version of byteflight. Applications for FlexRay include; steer-by-wire and brake-by-wire.
Fujitso {FlexRay Controllers}
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Electronic Engineering Design Key words: Automotive Buses, Auto Bus types, Motor vehicle Bus Standard, Passenger cars, Interface Standard Data Bus, Specification, Spec, Interface, IC, Physical Interface, Plastic optical fibers [POF], Topology, Description, Physical Interface, X-by-wire, Automotive, Auto, Car, carmaker, Cable Buses, Diagnostics.
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