TJA1085HN中文资料FlexRay active star coupler数据手册恩XP规格书

描述 Description

The TJA1085 is a FlexRay active star coupler that can connect up to 4 branches of a FlexRaynetwork. The TJA1085 is compliant with the FlexRay electrical physical layerspecification V3.0.1/ISO17458-4
Several TJA1085 devices can be connected via their TRXD0/1 interfaces to increase thenumber of branches in the network. A dedicated Communication Controller (CC) interfaceallows for integration into an ECU. The TJA1085 supports low-power management byoffering bus wake-up capability along with battery supply and voltage regulator control.The TJA1085 meets industry standards for EMC/ESD performance and providesenhanced bus error detection, low current consumption and unmatched asymmetric delayperformance.
The TJA1085 also fulfills the JASPAR requirements as defined by the Japanese carindustry.

特性 Features

General
• Fulfills JASPAR requirements
• Automotive product qualification in accordance with AEC-Q100
• Data transfer rates from 2.5 Mbit/s to 10 Mbit/s
• Supports 60 ns minimum bit time at 400 mV differential voltage
• Low-power management for battery-supplied ECUs
• Very low current consumption in AS_Sleep mode
• Leadless HVQFN44 package with improved Automated Optical Inspection (AOI) capability
Functional
• Supports autonomous active star operation independent of the host ensuring the TJA1085 remains active even if the host fails or is switched off
• Branches can be independently configured
• Branch extension via TRXD0/1 inner star interface
• 16-bit bidirectional SPI interface up to 2 Mbit/s for host communication
• Full host control over branch status
• Enhanced wake-up capability:
• Remote wake-up via wake-up pattern and dedicated FlexRay data frames
• Local wake-up via pin LWU
• Wake-up source recognition
• Configurable per branch
• Enhanced supply voltage monitoring on VIO, VCC, VBUF and VBAT
• Auto I/O level adaptation to host controller supply voltage VIO
• Can be used in 14 V, 24 V and 48 V powered systems
• Enhanced bus error detection - detects short-circuit conditions on the bus
• Instant transmitter shut-down interface (BGE pin)
• Selective branch shut-down (partial networking)
Robustness
• Bus pins protected against ±8 kV ESD pulses according to HBM and ±6 kV ESD pulses according to IEC61000-4-2
• All pins protected against ±1000 V ESD according to CDM
• All pins protected against ±200 V ESD according to MM
• No reverse currents from the digital input pins to VIO or VCC when the TJA1085 is not powered up
• Bus pins short-circuit proof to battery voltage (14 V, 24 V or 48 V) and ground
• Overtemperature detection and protection
• Bus pins protected against transients in automotive environment (according to ISO 7637 class C)
Active star functional classes
• Active star - communication controller interface
• Active star - bus guardian interface
• Active star - voltage regulator control
• Active star - logic level adaptation
• Active star - host interface
• Active star - increased voltage amplitude transmitter