Data Sheet
69
Rev. 1.00
2017-07-31
TLE9262BQXV33
High Speed CAN Transceiver
10.2.3
CAN Receive Only Mode
In CAN Receive Only Mode (RXD only), the driver stage is de-activated but reception is still operational. This
mode is accessible by an SPI command in Normal Mode and in Stop Mode. The bus biasing is set to VCAN/2.
10.2.4
CAN Wake Capable Mode
This mode can be used in SBC Stop, Sleep, Restart and Normal Mode and it is used to monitor bus activities.
It is automatically accessed in SBC Fail-Safe Mode. Both bus pins CANH/L are connected to GND via the input
resistors.
A wake-up signal on the bus results in a change of behavior of the SBC, as described in
Table 16
. The pins
CANH/L are terminated to typ. 2.5V through the input resistors. As a wake-up signalization to the
microcontroller, the RXD_CAN pin is set LOW and will stay LOW until the CAN transceiver is changed to any
other mode. After a wake-up event, the transceiver can be switched to CAN Normal Mode for communication
via SPI.
As shown in
Figure 29
, a wake-up pattern (WUP) is signaled on the bus by two consecutive dominant bus
levels for at least
t
Wake1
(filter time t >
t
Wake1
) and shorter than
t
Wake2
, each separated by a recessive bus level
of greater than
t
Wake1
and shorter than
t
Wake2
.
