TJA1086 Datasheet, PDF (1/62 Pages) NXP Semiconductors – FlexRay active star coupler

TJA1086
FlexRay active star coupler
Rev. 1 — 18 April 2013
Product data sheet
1. General description
The TJA1086 is a FlexRay active star coupler that connects two branches of a FlexRay
network. The TJA1086 is compliant with the FlexRay electrical physical layer specification
V3.0.1 (see Ref. 1).
Several TJA1085 and TJA1086 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 TJA1086 supports low-power
management by offering bus wake-up capability along with battery supply and voltage
regulator control. The TJA1086 meets industry standards for EMC/ESD performance and
provides enhanced bus error detection, low current consumption and unmatched
asymmetric delay performance.
The TJA1086 also fulfills the JASPAR requirements as defined by the Japanese car
industry.
2. Features and benefits
2.1 General
 Compliant with FlexRay Electrical Physical Layer specification V3.0.1.
 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
2.2 Functional
 Supports autonomous active star operation independent of the host ensuring the
TJA1086 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