| Popis: |
This chapter is divided into three sections. The first section gives an overview of the different cables used in automotive communication systems. Although 6 different kind of cables and their corresponding connector systems have been qualified for use in automotive applications (3 electrical cable types and 3 optical cable types), up to now, only three types are commonly used: Unshielded Twisted Pairs (UTP), Coax cable, and 1 mm PMMA POF. GOF and multimode PCS up to now are not used for mass volume production. The second section overviews the optical connectors used in automotive communication systems. The electrical connectors used in LIN and CAN networks. The optical connectors standardized by MOST. In the early phase of MOST implementation, the number of MOST connectors has been large: long pigtails, short pigtails, micro pigtails, and these connectors are combined with electrical connections with a wide range of pin sizes. The number of connectors used in MOST – mainly under cost pressureis now drastically reducing. The third section overviews the different fiber optic transceivers used for MOST. The different packages for MOST25 and MOST150 transceivers are discussed. The most difficult step was the conversion of the fiber optic transceivers to be compatible with reflow SMD processes. This step is now taken. Also the evolution towards higher data rates is shown. |
