1. General description
The TJA1082 FlexRay node transceiver is compliant with the FlexRay electrical physical
layer specification V2.1 Rev. B (see Ref. 1
). In addition, it incorporates features and
parameters included in V3.0.1 (see Ref. 2
and Section 14). It is primarily intended for
communication systems operating at between 2.5 Mbit/s and 10 Mbit/s, and provides an
advanced interface between the protocol controller and the physical bus in a FlexRay
network. The TJA1082 offers an optimized solution for Electronic Control Unit (ECU)
applications that do not need enhanced power management and are typically switched by
the ignition or activated by a dedicated wake-up line.
The TJA1082 provides a differential transmit capability to the network and a differential
receive capability to the FlexRay controller. It offers excellent ElectroMagnetic
Compatibility (EMC) performance as well as high ElectroStatic Discharge (ESD)
protection.
The TJA1082 actively monitors system performance using dedicated error and status
information (readable by any microcontroller), as well as internal voltage and temperature
monitoring.
2. Features and benefits
2.1 Optimized for time triggered communication systems
Compliant with Electrical Physical Layer specification 2.1 Rev. B
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Data transfer at 2.5 Mbit/s, 5 Mbit/s and 10 Mbit/s
Supports 60 ns minimum bit time at 400 mV differential voltage
Very low ElectroMagnetic Emission (EME) to support unshielded cable
Differential receiver with high common-mode range for excellent ElectroMagnetic
Immunity (EMI)
Auto I/O level adaptation to host controller supply voltage V
IO
Can be used in 14 V and 42 V powered systems
Instant shut-down interface (via BGE pin)
2.2 Low power management
Very low current consumption in Standby mode
Remote wake-up via a wake-up pattern or dedicated FlexRay data frames on the bus
lines
TJA1082
FlexRay node transceiver
Rev. 6 — 28 November 2012 Product data sheet
