TLE9261-3QX Datasheet, PDF (47/186 Pages) Infineon Technologies AG – Dedicated Data Sheets are available for the different product variants

TLE9261-3QX
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.
Table 9 CAN Modes selected via SPI in SBC Normal Mode
CAN Mode
CAN OFF
CAN WK Mode (no SWK)
CAN Receive Only (no SWK)
CAN Normal Mode (no SWK)
CAN OFF
CAN SWK Mode
CAN Receive Only with SWK
CAN Normal Mode with SWK
CAN_2
0
0
0
0
1
1
1
1
CAN_1
0
0
1
1
0
0
1
1
CAN_0
0
1
0x
1
0
1
0
1
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)
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 10 CAN Modes change when switching from SBC Normal Mode to SBC Stop Mode
Programmed CAN Mode in SBC CAN_x SYSERR CAN Mode in SBC Stop Mode
Normal Mode
bits
bit
CAN OFF
000
0
CAN OFF
CAN WK Mode (no SWK)
001
0
CAN WK Mode (no SWK)
CAN Receive Only (no SWK)
010
0
CAN Receive Only (no SWK)
CAN Normal Mode (no SWK)
011
0
CAN WK Mode (no SWK)
CAN OFF
100
0
CAN OFF
CAN SWK Mode
101
0
CAN SWK Mode
CAN_x
bits
000
001
010
011
100
101
Data Sheet
47
Rev. 1.1, 2014-09-26