TLE9263QX
High Speed CAN Transceiver
10.2.5
TXD Time-out Feature
If the TXD signal is dominant for a time t > tTXD_CAN_TO, in CAN Normal Mode, the TXD time-out function deactivates
the transmission of the signal at the bus. This is implemented to prevent the bus from being blocked permanently
due to an error. The transmitter is disabled and the transceiver is switched to Receive Only Mode. The failure is
stored in the SPI flag CAN_FAIL. The CAN transmitter stage is activated again after the dominant time-out
condition is removed and the transceiver is automatically switched back to CAN Normal Mode.The transceiver
configuration stays unchanged.
10.2.6
Bus Dominant Clamping
If the HS CAN bus signal is dominant for a time t > tBUS_CAN_TO, regardless of the CAN transceiver mode a bus
dominant clamping is detected and the SPI bit CAN_FAIL is set. The transceiver configuration stays unchanged.
10.2.7
Under Voltage Detection
The voltage at the CAN supply pin is monitored in CAN Normal Mode only. In case of VCAN under voltage a
signalization via SPI bit VCAN_UV is triggered and the SBC disables the transmitter stage. If the CAN supply
reaches a higher level than the under voltage detection threshold (VCAN > VCAN_UV), the transceiver is
automatically switched back to CAN Normal Mode. The transceiver configuration stays unchanged.
Data Sheet
68
Rev. 1.1, 2014-09-26
INFINEON [ Infineon ]
