E910.54 Datasheet, PDF (1/2 Pages) ELMOS Semiconductor AG – FlexRay™ Transceiver

ßßDRIVENßBY
FlexRay™ Transceiver
E910.54
Features
Brief Functional Description
ÿ Part of the FlexRay™ electrical, physical layer
ÿ Interface between the communication controller
and the transfer medium (twisted pair bus line)
ÿ Support of data rates up to 10 Mbit/s
ÿ Enhanced diagnosis capability provided via SPI
with interrupt generation
ÿ Protection against overload damage by current
limitation and overtemperature detection
ÿ Bus driver outputs withstand - 27 V / + 40 V DC
voltage
ÿ Low EME due to balanced differential transmission
The low cost basic FlexRay™ transceiver is part of the
electrical, physical layer in a FlexRay™ communication
network. The E910.54 provides an interface between
the twisted pair physical bus medium and a commu-
nication 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 overtem-
perature condition. An interrupt signal is generated
whenever the failure status changes.
Applications
ÿ Transceiver in FlexRay™ nodes (ECUs)
Typical Application
ELMOS is member of the FlexRay consortium
Blockdiagram
Microcontroller
(HOST)
4 ^{Communication}
Controller
TxEN
SPI
INTN
TxD RxD
Bus Driver
E910.54
Power
Supply
ECU 1
VIO VCC
BP
BM
GND
SCSN
SCK
SDI
SDO
INTN
RxD
TxD
TxEN
VCC
VIO
Host Interface
(SPI + Interrupt)
Internal
Logic
Communication
Controller Interface
Power
Supply
Undervolt.
POR
Monitor
Overtemp.
Vref
Monitor
GND
Bus Failure
Detector
BP
Transmitter
BM
Receiver
E910.54
ELMOS Semiconductor AG
October 2007