E910.55 Datasheet, PDF (1/2 Pages) ELMOS Semiconductor AG – FlexRay™ Transceiver With Wakeup

ßßDRIVENßBY
FlexRay™ Transceiver With Wakeup
E910.55
Features
Brief Functional Description
ÿ Part of the FlexRay™ electrical, physical layer
ÿ Interface between communication controller
and physical medium (twisted pair bus line)
ÿ Support of data rates up to 10 Mbit/s
ÿ Support of low power mode for an ECU
ÿ Remote wake-up via bus line
ÿ Enhanced diagnosis capability 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 bus driver is a part of the electrical, phy-
sical 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 informati-
on concerning failure detection on the bus lines (e.g.
short-circuits, ground loss) and overtemperature con-
dition. 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 vol-
tage regulator.
Applications
ÿ Transceiver in FlexRay™ nodes (ECUs)
ELMOS is member of the FlexRay consortium
Typical Application
Blockdiagram
Microcontroller
(HOST)
VBAT
Power
Supply
ECU 1
4 ^{Communication}
Controller
Local
Wakeup
TxEN TxD RxD
SPI
Bus Driver
INTN
E910.55
LWU
GND
VIO VCC INH
BP
BM
SCSN
SCK
SDI
SDO
INTN
RxD
TxD
TxEN
INH
LWU
Host Interface
(SPI + Interrupt)
Communication
Controller Interface
Inhibit & Wake
Internal
Logic
VBAT
VCC
VIO
Power
Supply
Undervolt.
POR
Monitor
5V
Overtemp.
Vref
Regulator
Monitor
GND
Bus Failure
Detector
BP
Transmitter
BM
Receiver
Wake up
Detector
E910.55
ELMOS Semiconductor AG
October 2007