E910.54B37AB ELMOS Semiconductor, E910.54B37AB Datasheet - Page 11

• Manufacturer Part Number: E910.54B37AB
• Description: Interface - Specialized FlexRay Transceiver
• Manufacturer: ELMOS Semiconductor

Specifications of E910.54B37AB

• Rohs: yes
• Product Type: FlexRay Transceiver
• Operating Supply Voltage: 5 V
• Supply Current: 50 mA
• Maximum Power Dissipation: 150 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-14
• Minimum Operating Temperature: - 40 C

4.1.2 node configuration
Figure 5: The E910.54 in a FlexRay node
An ECU (node) (Fig. 5) includes the host controller with its specific application (sensors, actuators), the communica-
tion part (the communication controller CC and the bus driver BD) and the local power supply (5V, 3.3V). The supply
voltages are derived from the alternator voltage VBAT by means of linear or buck regulators. The main function of
the bus driver is to transmit and to receive data to/from the bus lines. The communication controller CC sends the
data to TxD if TxEN is active low. Received data from the bus are transferred to the CC at RxD.
Furthermore there is a Serial Parallel Interface (SPI) between the bus driver BD and the host. The function is to
transmit the failure messages about the BD, the supplies and the transmission lines to the host. In addition the
operation mode of the transceiver can be changed.
4.1.3 Operation modes
4.1.3.1 normal and low-power operation modes
The basic bus driver BD supports 2 operation modes: BD_Normal and BD_Standby (low power mode).
BD_Normal mode
The bus driver is able to send and receive signals to and from the FlexRay bus.
The bus wires are biased to uBias via receiver input resistance.
BD_Standby mode
The BD_Standby mode is a low power mode. The BD enters the state BD_Standby after VCC and VIO power on.
The BD is not able to send or receive data signals from the bus.
The power consumption is reduced compared to BD_Normal.
The bus wires are terminated to GND via receiver input resistance.
ELMOS Semiconductor AG
4
Sensor
SPI
INTN
TxEN
Communication
Microcontroller
Controller
(HOST)
TxD
Actuator
RxD
E910.54
Data sheet
GND
11/28
VIO
5V/3.3V
Supply
Power
VBAT
VCC
BM
BP
ECU
QM-No.: 25DS0004.00 2010-02-03
E910.54