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| FlexRayTM StaR CoupleR Features y Part of the FlexRayTM electrical, physical layer y Active star coupler connects up to 4 branches (FlexRayTM busses) to nodes or other active stars y Support of data rates up to 10 Mbit/s y Optional support of low power mode for an ECU y Remote wake up via bus line y Enhanced diagnosis capability provided via SPI with interrupt generation y Protection against overload damage by current limitation and overtemperature detection y Bus driver outputs withstand - 27 V / + 40 V DC voltage y Low EME due to balanced differential transmission E910.56 Brief Functional Description The star coupler is part of the electrical, physical layer in a FlexRayTM communication network. The E910.56 provides interfaces to connect up to four branches of twisted pair physical bus lines to other bus drivers or star couplers. It also interfaces with a communication controller (CC) and a C. Via SPI the bus driver (BD) provides status information concerning failure detection on the bus lines (e.g. short circuit, ground loss) and overtemperature condition to a host controller (HOST). An interrupt signal is generated whenever the failure status changes. The device supports normal and standby modes and provides remote wake up capability via bus line. The output (INH) can be used to control an external voltage regulator. applications y Star coupler and additionally usable as transceiver in FlexRayTM nodes (ECUs) ELMOS is member of the FlexRay consortium typical application Blockdiagram SCSN SCK SDI SDO INTN Single_Branch_1 Host Interface (SPI + Interrupt) Bus Failure Detector_1 VBAT BP_1 Transmitter_1 Microcontroller (HOST) Communication Controller TxEN SPI INTN TxD RxD VIO Power Supply ECU 1 BM_1 RxD TxD TxEN Communication Controller Interface Receiver_1 Wake up Detector_1 4 VCC INH TRXD1 TRXD2 VBUF Single_Branch_2 BP_2 BM_2 Local Wakeup LWU BP_1 BM_1 BP_2 Bus Driver E910.56 BM_2 BP_3 BM_3 BP_4 to additional stars .... Central Logic Single_Branch_3 .... BP_3 BM_3 BM_4 Single_Branch_4 .... INH LWU BP_4 BM_4 Inhibit & Wake Star Transmitter & Receiver TRXD1 TRXD2 GND VBAT VCC VIO Power Supply 5V Regulator Undervolt. Monitor Overtemp. Monitor POR Vref VBUF E910.56 GND ELMOS Semiconductor AG October 2007 elMoS Semiconductor aG - Headquarters Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany Phone +49(0)231-7549-0|Fax +49(0)231-7549-149 sales@elmos.de | www.elmos.de elMoS Semiconductor aG - Munich Branch Am Gefluegelhof 12 | 85716 Unterschleissheim | Germany Phone +49(0)89-318370-30|Fax +49(0)89-318370-31 sales@elmos.de | www.elmos.de elMoS Semiconductor aG - Stuttgart Branch Max-Eyth-Str. 35 | 71088 Holzgerlingen | Germany Phone +49(0)7031-631991|Fax +49(0)7031-631997 sales@elmos.de | www.elmos.de MeCHaleSS Systems GmbH | a MeMBeR oF tHe elMoS GRoup Technologiepark Karlsruhe | Albert Nestler Str. 10 | 76131 Karlsruhe | Germany Phone +49-721-62698-00 | Fax +49-721-62698-11 info@mechaless.com elMoS North america, inc. 32255Northwestern Highway Suite45 | Farmington Hills | MI 48334 | USA Phone +1-2488653200|Fax +1-2488653203 sales-int@elmos.de | www.elmos.de elMoS France S.a. 64bis rue Kleber | 92300 Levallois Perret | France Phone +33(0)1-46525959|Fax +33(0)1-42429554 sales-int@elmos.de | www.elmos.de elMoS Representative in Japan - MuSaSHINo Corporation Tohchiku Bldg. | 2-14-18 | Minato-ku | Tokyo 108-0023 | Japan Phone +81-3-3453-3351 | Fax +81-3-3453-3350 info@musashinocorp.com elMoS Distribution line - Channel Microelectronic GmbH Alleenstr. 29/3 | 73730 Esslingen | Germany Phone +49-711-930721-30 | Fax +49-711-930721-40 info@channel-microelectronic.de |
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