The FlexRay™ protocol serves as a communication infrastructure for next-generation high-speed control applications in vehicles. It provides the following capabilities:
FlexRay Version 2.1 Features
Depending on the application needs, the FlexRay communication cycle is divided into static and dynamic segments. The static data transmission enables time triggered communication to meet the requirement of dependable systems. The dynamic transmission allows each node to use the full bandwidth for event driven communications.
FlexRay's static data transmission is deterministic with a minimum message latency and message jitter guaranteed. FlexRay supports redundancy and fault-tolerant distributed clock synchronization for a global time base, thus keeping the schedule of all network nodes within a tight, predefined precision window.
FlexRay supports both optical and electrical physical layers to enable the user to implement a wiring scheme that best suits their needs. A FlexRay system is highly scalable, ranging from a single channel bus to dual channel multi-star topologies with full redundancy. It even allows the mixture of dual and single channel nodes in one system to provide more cost-effective solutions.