Data Sheet
72
Rev. 1.00
2017-07-31
TLE9262BQXV33
High Speed CAN Transceiver
10.2.5
TXD Time-out Feature
If the TXD signal is dominant for a time
t
>
t
TXD_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
>
t
BUS_CAN_TO
in CAN Normal and Receive Only Mode a bus
dominant clamping is detected and the SPI bit
CAN_FAIL
is set. The transceiver configuration stays
unchanged.
10.2.7
Undervoltage Detection
The voltage at the CAN supply pin is monitored only in CAN Normal and Receive Only Mode for SBC Normal
and Stop Mode . In case of VCAN undervoltage 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 undervoltage detection
threshold (VCAN > V
CAN_UV
), the transceiver is automatically switched back to CAN Normal Mode. The
transceiver configuration stays unchanged.
