
Data Sheet
50
Rev. 1.00
2017-07-31
TLE9262-3BQX
5.4.4
SBC Modes for Selective Wake (SWK)
The SBC mode is selected via the
MODE
bits as described in
Chapter 5.1
.
The mode of the CAN transceiver needs to be selected in SBC Normal Mode. The CAN mode is programed the
bits CAN_0, CAN_1 and CAN_2. In the low-power modes (SBC Stop, SBC Sleep) the CAN mode can not be
changed via SPI.
The detailed SBC state machine diagram including the CAN selective wake feature is shown in
Figure 6
.
The application must now distinguish between the normal CAN operation an the selective wake function:
• WK Mode: This is the normal CAN wake capable mode without the selective wake function
• SWK Mode: This is the CAN wake capable mode with the selective wake function enabled
Figure 14
shows the possible CAN transceiver modes.
Figure 14 CAN SWK State Diagram
5.4.4.1
SBC Normal Mode with SWK
In SBC Normal Mode the CAN Transceiver can be switched into the following CAN Modes
• CAN OFF
• CAN WK Mode (without SWK)
• CAN SWK Mode
• CAN Receive Only (No SWK activated)
• CAN Receive Only Mode with SWK
• CAN Normal Mode (No SWK activated)
• CAN Normal Mode with SWK
In the CAN Normal Mode with SWK the CAN Transceiver works as in SBC Normal Mode, so bus data is received
through RXD, data is transmitted through TXD and sent to the bus. In addition the SWK block is active. It
CAN OFF Mode
CAN WK Mode
CAN Normal Mode
(no SWK)
CAN Normal mode
CAN Normal mode with SWK
Config.
Check
CAN
SWK
SPI CAN_x
CAN RX Only Mode
CAN RX Only Mode with SWK
Config.
Check
Config.
Check
CAN
SWK
CAN Wakable Mode
with SWK
CAN Receive-Only
Mode
OK
OK
OK
CAN WK
CAN
SWK
CAN WK
CAN WK
Not OK
Not OK
Not OK
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