Abstract
FlexRay is a new standard of network communication system which has been developed for future automotive applications. It was devised by automotive manufacturers and semiconductor vendors. FlexRay provides a high speed serial communication, time triggered bus and fault tolerant communication between electronic devices for automotive applications. In this paper, FlexRay system is first designed using SDL (Specification and Description Language). For hardware implementation, FlexRay system is designed using Verilog HDL based on the SDL design result. The disigned system is synthesized using Synopsys Design Compiler with the Hynix 0.18 ?m cell library. For constructing a FlexRay communication network, the active is used since active star systems can provide high speed data transmission up to 10 Mbps. The performance of the active star network is tested using one transmitter node and two receiver nodes.
Highlights
FlexRay system design using SDLSpecification and Description Language (SDL) is a high abstraction level system design language that is standardized as Z.100 by ITU Telecommunication Standardization Sector (ITU-T) (ITU-T Z.100, 1996)
FlexRay communication controller and bus guardian protocols can be realized in Finite State Machine (FSM) diagram form
The designed system requires about 1,587,000 gates and 14 mW power consumption
Summary
Specification and Description Language (SDL) is a high abstraction level system design language that is standardized as Z.100 by ITU Telecommunication Standardization Sector (ITU-T) (ITU-T Z.100, 1996). SDL is used for modeling, simulation and verification of communication protocols Protocol design using this formal language ensures the compatibility between the requirements of the initial design and the final implementation. FlexRay protocol specification does not describe the details of the following functions: prepbitstream, prepCASstream, frameCRC, headerCRC, getpayloadlength, getRF, position, abs, length, sort, append, and member. In this reserch, all of the functions are realyzed by the SDL, and it’s application to the implemented FlexRay system.
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