TLE9262QXV33 Datasheet, PDF (76/164 Pages) Infineon Technologies AG – Dedicated Data Sheets are available for the different product variants

TLE9262QXV33
LIN Transceiver
11.2
Functional Description
The LIN Bus is a single wire, bi-directional bus, used for in-vehicle networks. The LIN transceivers implemented
inside the TLE9262QXV33 are the interface between the micro controller and the physical LIN Bus. The digital
output data from the micro controller are driven to the LIN bus via the TXD input pin on the TLE9262QXV33. The
transmit data stream on the TXD input is converted to a LIN bus signal with optimized slew rate to minimize the
EME level of the LIN network. The RXD output sends back the information from the LIN bus to the micro controller.
The receiver has an integrated filter network to suppress noise on the LIN Bus and to increase the EMI (Electro
Magnetic Immunity) level of the transceiver.
Two logical states are possible on the LIN Bus according to the LIN Specification 2.2.
Every LIN network consists of a master node and one or more slave nodes. To configure the TLE9262QXV33 for
master node applications, a resistor in the range of 1 kΩ and a reverse diode must be connected between the LIN
bus and the power supply VSHS.
The different transceiver modes can be controlled via the SPI LIN1 bits.
Figure 33 shows the possible transceiver mode transitions when changing the SBC mode.
SBC Mode
LIN Transceiver Mode
SBC Stop Mode
Receive Only Wake Capable Normal Mode
OFF
SBC Normal Mode Receive Only Wake Capable Normal Mode
OFF
SBC Sleep Mode
Wake Capable
OFF
SBC Restart Mode
Woken¹
OFF
SBC Fail-Safe Mode
Wake Capable
1_{after a wake event on LIN Bus}
Behavior after SBC Restart Mode - not coming from SBC Sleep Mode due to a wake up of the respective transceive:r
If the transceivers had been configured to Normal Mode, or Receive Only Mode, then the mode will be changed to Wake
Capable. If it was Wake Capable, then it will remain Wake Capable. If it had been OFF before SBC Restart Mode, then it
will remain OFF.
Behavior in SBC Development Mode:
LIN default value in SBC INIT MODE and entering SBC Normal Mode from SBC Init Mode is ON instead of OFF.
Figure 33 LIN Mode Control Diagram
11.2.1 LIN OFF Mode
The LIN OFF Mode is the default mode after power-up of the SBC. It is available in all SBC Modes and is intended
to completely stop LIN activities or when LIN communication is not needed. In LIN OFF Mode, a wake-up event
on the bus will be ignored.
Data Sheet
76
Rev. 1.1, 2014-10-23