ßßDRIVENßBY E910.55 FlexRay™ Transceiver With Wakeup Features Brief Functional Description ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ The low cost bus driver is a part of the electrical, physical layer in a FlexRay™ communication network. The E910.55 provides an interface between the twisted pair physical bus medium and a communication controller (CC). An SPI interface connects the bus driver (BD) to a host controller (HOST) to provide status information concerning failure detection on the bus lines (e.g. short-circuits, ground loss) and overtemperature condition. 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. Part of the FlexRay™ electrical, physical layer Interface between communication controller and physical medium (twisted pair bus line) Support of data rates up to 10 Mbit/s Support of low power mode for an ECU Remote wake-up via bus line Enhanced diagnosis capability via SPI with interrupt generation Protection against overload damage by current limitation and overtemperature detection Bus driver outputs withstand - 27 V / + 40 V DC voltage Low EME due to balanced differential transmission Applications ÿ Transceiver in FlexRay™ nodes (ECUs) ELMOS is member of the FlexRay consortium Typical Application Blockdiagram SCSN SCK VBAT SDI Microcontroller (HOST) 4 ECU 1 Power Supply SDO Bus Failure Detector Host Interface BP (SPI + Interrupt) Transmitter INTN RxD Communication Controller TxD Communication TxEN Controller Interface Logic INTN Local Wakeup LWU TxD RxD VIO Bus Driver E910.55 VCC INH LWU Inhibit & Wake BP BM VBAT VCC GND Receiver Wake up Detector INH TxEN SPI BM Internal VIO Power Supply 5V Regulator Undervolt. Monitor POR Overtemp. Monitor Vref E910.55 GND ELMOS Semiconductor AG October 2007 ELMOS Semiconductor AG – Headquarters Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany Phone + 49 (0) 231 - 75 49 - 0 | Fax + 49 (0) 231 - 75 49 - 149 [email protected] | www.elmos.de ELMOS Semiconductor AG – Munich Branch Am Gefluegelhof 12 | 85716 Unterschleissheim | Germany Phone + 49 (0) 89 - 318 370 - 30 | Fax + 49 (0) 89 - 318 370 - 31 [email protected] | www.elmos.de ELMOS Semiconductor AG – Stuttgart Branch Max-Eyth-Str. 35 | 71088 Holzgerlingen | Germany Phone + 49 (0) 70 31 - 63 19 91 | Fax + 49 (0) 70 31 - 63 19 97 [email protected] | 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 [email protected] ELMOS North America, inc. 32255 Northwestern Highway Suite 45 | Farmington Hills | MI 48334 | USA Phone + 1 - 248 865 32 00 | Fax + 1 - 248 865 3203 [email protected] | www.elmos.de ELMOS France S.A. 64 bis rue Kléber | 92300 Levallois Perret | France Phone + 33 (0) 1 - 46 52 59 59 | Fax + 33 (0) 1 - 42 42 95 54 [email protected] | www.elmos.de ELMOS Representative in Japan – MUSASHINO Corporation Tohchiku Bldg. | 2-14-18 | Minato-ku | Tokyo 108-0023 | Japan Phone +81 - 3 - 34 53 - 33 51 | Fax +81 - 3 - 34 53 - 33 50 [email protected] ELMOS Distribution Line – Channel Microelectronic GmbH Alleenstr. 29/3 | 73730 Esslingen | Germany Phone +49 - 711 - 930 721 - 30 | Fax +49 - 711 - 930 721 - 40 [email protected]