TJA1080ATS/2/T,112
FlexRay收发器
Overview
The TJA1080A is a FlexRay transceiver that is fully compliant with the FlexRay electrical physical layer specification V2.1 Rev. A. In addition, it incorporates features and parameters included in V3.0.1. It is primarily intended for communication systems from 1 Mbit/s to 10 Mbit/s, and provides an advanced interface between the protocol controller and the physical bus in a FlexRay network.
The TJA1080A can be configured to be used as an active star transceiver or as a node transceiver.
The TJA1080A provides differential transmit capability to the network and differential receive capability to the FlexRay controller. It offers excellent EMC performance as well as high ESD protection.
The TJA1080A actively monitors the system performance using dedicated error and status information readable by any microcontroller, as well as internal voltage and temperature monitoring.
The TJA1080A supports the mode control as used in Semiconductors TJA1054 and TJA1041 CAN transceivers.
The TJA1080A is the next step up from the TJA1080 FlexRay transceiver. Being fully pin compatible and offering the same excellent ESD protection, the TJA1080A also features:
* Improved power-on reset concept
* Improved ElectroMagnetic Emission EME
* Support of 60 ns minimum bit time
* Improved bus error detection functionality
This makes the TJA1080A an excellent choice in any kind of FlexRay node.
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## Features
### Optimized for time triggered communication systems
* Compliant with FlexRay electrical physical layer specification V2.1 Rev. A
* Automotive product qualification in accordance with AEC-Q100
* Data transfer up to 10 Mbit/s
* Very low EME to support unshielded cable
* Differential receiver with high common-mode range for ElectroMagnetic Immunity EMI
* Auto I/O level adaptation to host controller supply voltage VIO
* Can be used in 14 V and 42 V powered systems
* Instant shut-down interface via BGE pin
* Independent power supply ramp-up for VBAT, VCC and VIO
* Transceiver can be used for linear passive bus topologies as well as active star topologies
### Low power management
* Low power management including two inhibit switches
* Very low current in Sleep and Standby modes
* Local and remote wake-up
* Supports remote wake-up via dedicated data frames
* Wake-up source recognition
* Automatic power-down in Star-sleep mode in star configuration
### Diagnosis detection and signalling
* Overtemperature detection
* Short-circuit on bus lines
* VBAT power-on flag first battery connection and cold start
* Pin TXEN and pin BGE clamping
* Undervoltage detection on pins VBAT, VCC and VIO
* Wake source indication
### Protection
* Bus pins protected against 8 kV HBM ESD pulses
* Bus pins protected against transients in automotive environment according to ISO 7637 class C
* Bus pins short-circuit proof to battery voltage 14 V and 42 V and ground
* Fail-silent behavior in case of an undervoltage on pins VBAT, VCC or VIO
* Passive behavior of bus lines in the event that transceiver is not powered
### Functional classes according to FlexRay electrical physical layer specification
* Bus driver voltage regulator control
* Bus driver - bus guardian control interface
* Bus driver logic level adaptation
* Active star - communication controller interface
* Active star - bus guardian interface
* Active star - voltage regulator control
## Features
