TJA1085G集成電路（IC）的驅(qū)動(dòng)器接收器收發(fā)器規(guī)格書PDF中文資料

General description

The TJA1085G is a FlexRay active star coupler that can connect up to 4 branches of a

FlexRay network. The TJA1085G is compliant with the FlexRay electrical physical layer

specification V3.0.1/ISO17458-4 (see Ref. 1 and Ref. 2).

Several TJA1085G devices can be connected via their TRXD0/1 interfaces to increase

the number of branches in the network. A dedicated Communication Controller (CC)

interface allows for integration into an ECU. The TJA1085G supports low-power

management by offering bus wake-up capability along with battery supply and voltage

regulator control. The TJA1085G meets industry standards for EMC/ESD performance

and provides enhanced bus error detection, low current consumption and unmatched

asymmetric delay performance.

Features and benefits

General

? Compliant with FlexRay Electrical Physical Layer specification V3.0.1/ISO17458-4

? 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

TJA1085G 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 TJA1085G 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