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TJA1080 Datasheet

FlexRay transceiver

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TJA1080
FlexRay transceiver
Rev. 02 — 12 July 2007
Product data sheet
1. General description
The TJA1080 is a FlexRay transceiver, which is in line with the FlexRay electrical physical
layer specification V2.1 Rev. A (see Ref. 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 TJA1080 can be configured to be used as an active star transceiver or as a node
transceiver.
The TJA1080 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 TJA1080 actively monitors the system performance using dedicated error and status
information (readable by any microcontroller), as well as internal voltage and temperature
monitoring.
The TJA1080 supports the mode control as used in NXP Semiconductors TJA1054
(see Ref. 2) and TJA1041 (see Ref. 3) CAN transceivers.
2. Features
2.1 Optimized for time triggered communication systems
I Data transfer up to 10 Mbit/s
I Usable for 14 V and 42 V powered systems
I Very low ElectroMagnetic Emission (EME) to support unshielded cable
I Differential receiver with high common-mode range for ElectroMagnetic Immunity
(EMI)
I Transceiver can be used for linear passive bus topologies as well as active star
topologies
I Auto I/O level adaptation to host controller supply voltage VIO
I Bus guardian interface included
I Automotive product qualification in accordance with AEC-Q100


NXP Semiconductors Electronic Components Datasheet

TJA1080 Datasheet

FlexRay transceiver

No Preview Available !

NXP Semiconductors
TJA1080
FlexRay transceiver
2.2 Low power management
I Low power management including two inhibit switches
I Very low current in Sleep and Standby mode
I Wake-up via wake-up symbol on the bus lines (remote), negative edge on pin WAKE
(local), and a positive edge on pin STBN if VIO is present
I Wake-up source recognition
I Automatic power-down (in Star-sleep mode) in star configuration
2.3 Diagnosis (detection and signalling)
I Overtemperature detection
I Short-circuit on bus lines
I VBAT power-on flag (first battery connection and cold start)
I Pin TXEN and pin BGE clamping
I Undervoltage detection on pins VBAT, VCC and VIO
I Wake source indication
2.4 Protections
I Bus pins protected against 8 kV HBM ESD pulses
I Bus pins protected against transients in automotive environment (ISO 7637 class C
compliant)
I Bus pins short-circuit proof to battery voltage (14 V and 42 V) and ground
I Fail-safe mode in case of an undervoltage on pins VBAT, VCC or VIO
I Passive behavior of bus lines in the event that transceiver is not powered
3. Quick reference data
Table 1.
Symbol
VBAT
Quick reference data
Parameter
supply voltage on pin VBAT
VCC supply voltage
VBUF
supply voltage on pin VBUF
VIO supply voltage on pin VIO
VTRXD0
VTRXD1
VBP
VBM
IBAT
voltage on pin TRXD0
voltage on pin TRXD1
voltage on pin BP
voltage on pin BM
supply current on pin VBAT
Conditions
no time limit
operating range
no time limit
operating range
no time limit
operating range
no time limit
operating range
low power modes in
node configuration
normal power modes
Min Typ
0.3 -
6.5 -
0.3 -
4.75 -
0.3 -
4.75 -
0.3 -
2.2 -
0.3 -
0.3 -
60 -
60 -
--
--
Max
+60
60
+5.5
5.25
+5.5
5.25
+5.5
5.25
+5.5
+5.5
+60
+60
50
1
Unit
V
V
V
V
V
V
V
V
V
V
V
V
µA
mA
TJA1080_2
Product data sheet
Rev. 02 — 12 July 2007
© NXP B.V. 2007. All rights reserved.
2 of 48


Part Number TJA1080
Description FlexRay transceiver
Maker NXP
Total Page 30 Pages
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