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Data Sheet
51
Rev. 1.00
2017-07-31
TLE9262-3BQX
monitors the data on the CAN bus, updates the error counter and sets the
CANSIL
flag if there is no
communication on the bus.
It will generate an CAN Wake interrupt in case a WUF is detected (RXD is not pulled to LOW in this
configuration).
In CAN Receive Only Mode with SWK, CAN data can be received on RXD and SWK is active, no data can be sent
to the bus.
The bit
SYSERR
= ‘0’ indicates that the SWK function is enabled, and no frame error counter overflow is
detected.
When reading back CAN_x the programmed mode is shown in SBC Normal Mode. To read the real CAN mode
the bits
SYSERR
,
SWK_SET
and
CAN
have to be evaluated. A change out of SBC Normal Mode can change the
CAN_0 and CAN_1 bits.
5.4.4.2
SBC Stop Mode with SWK
In SBC Stop Mode the CAN Transceiver can be operated with the following CAN Modes
• CAN OFF
• CAN WK Mode (no SWK)
• CAN SWK Mode
• CAN Receive Only (no SWK)
• CAN Receive Only with SWK
• CAN Normal Mode (no SWK)
• CAN Normal Mode with SWK
To enable CAN SWK Mode the CAN has to be switched to “CAN Normal Mode with SWK”, “CAN Receive Only
Mode with SWK” or to “CAN SWK Mode” in SBC Normal Mode before sending the SBC to SBC Stop Mode. The
bit SYSERR = ‘0’ indicates that the SWK function is enabled. The table shows the change of CAN Mode when
switching from SBC Normal Mode to SBC Stop Mode.
Note:
CAN Receive Only Mode in SBC Stop Mode is implemented to also enable pretended networking
(Partial networking done in the microcontroller).
Table 9
CAN Modes selected via SPI in SBC Normal Mode
CAN Mode
CAN_2
CAN_1
CAN_0
CAN OFF
0
0
0
CAN WK Mode (no SWK)
0
0
1
CAN Receive Only (no SWK)
0
1
0x
CAN Normal Mode (no SWK)
0
1
1
CAN OFF
1
0
0
CAN SWK Mode
1
0
1
CAN Receive Only with SWK
1
1
0
CAN Normal Mode with SWK
1
1
1
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