driven by - Elmos Semiconductor AG

driven by
E910.56
Monolithic FlexRay™ Star Coupler
Features
General Description
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The star coupler is part of the electrical, physical layer
in a FlexRay™ 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). Via SPI the bus driver (BD) provides
status information concerning failure detection on
the bus lines (e.g. short circuit, ground loss) and over
temperature condition to a host controller (HOST). An
interrupt signal is generated whenever the failure status changes.
The device supports normal and standby mode 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
Monolithic FlexRay™ active star connects up to 4 branches (FlexRay™ busses) to nodes or other
active stars
Additional CC and host interface
Supports data rates up to 10MBaud
Supports low power mode for ECU
Remote and local wake-up
Fast forwarding of wake-up frames
Enhanced diagnosis capability provided via SPI
with interrupt generation
Protection against overload damage by current limitation and over temperature detection
Bus driver outputs withstand – 27V / + 40V DC
Low EME due to balanced differential transmission
QFN 9x9 44Ld package
Applications
ÿ Star coupler and additionally usable as transceiver in FlexRay™ nodes (ECUs)
Typical Application
ELMOS is a member of the FlexRay consortium
Blockdiagram
SCSN
SCK
SDI
SDO
VBAT
Microcontroller
(HOST)
4
Bus Failure
Detector_1
BP_1
INTN
ECU 1
Power
Supply
RxD
TxD
TxEN
Transmitter_1
Communication
Controller
Interface
SPI
INTN
LWU
TxD
BM_1
Receiver_1
Wake up
Detector_1
Communication
Controller
TxEN
Local
Wakeup
Single_Branch_1
Host Interface
(SPI + Interrupt)
RxD
VIO
Bus Driver
E910.56
VCC
INH
TRXD1
Central
Logic
intra star
interface
TRXD2
VBUF
Single_Branch_2
....
BP_2
Single_Branch_3
....
BP_3
Single_Branch_4
....
BP_4
BP_1 BM_1 BP_2 BM_2 BP_3 BM_3 BP_4 BM_4
INH
LWU
Inhibit & Wake
Star Transmitter &
Receiver
GND
VBAT
VCC
VIO
BM_2
BM_3
BM_4
TRXD1
TRXD2
intra star
interface
Power Undervolt.
Supply Monitor POR
5V
Overtemp.
Regulator Monitor
VBUF
Vref
E910.56
GND
ELMOS Semiconductor AG
Info Sheet
QM-No.: 25IS0005E.00 2009-09-29
ELMOS Semiconductor AG – Headquarters
Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany
Phone + 49 (0) 231 - 75 49 - 100 | Fax + 49 (0) 231 - 75 49 - 149
sales@elmos.de | www.elmos.de
Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any
circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication
has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of
the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications.
Copyright © 2009 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.