OPTIREG™ SBC TLE9274QXV33
LIN transceiver
9.2.8
Slope selection
The LIN transceiver offers a LIN Low-Slope mode for 10.4 kBaud communication and a LIN Normal-Slope
mode for 20 kBaud communication. The only difference is the behavior of the transmitter. In LIN Low-Slope
mode, the transmitter uses a lower slew rate to further reduce the EME compared to Normal-Slope mode. This
complies with SAE J2602 requirements.
By default, the device works in LIN Normal-Slope mode. The selection of LIN Low-Slope mode is done by an
SPI bit LIN_LSM and will become effective as soon as CSN goes HIGH for all LINx. Only the LIN slope is changed.
The selection is accessible in SBC Normal mode only.
9.2.9
Flash programming via LIN
The device allows LIN flash programming, e.g. of another LIN slave with a communication of up to 115 kbps.
This feature is enabled by de-activating the slope control mechanism via a SPI command (bit LIN_FLASH) and
will become effective as soon as CSN goes HIGH’ for all LINx. The SPI bit can be set in SBC Normal mode.
Note: It is recommended to perform flash programming only at nominal supply voltage VS = 13.5 V to ensure
stable data communication.
Datasheet
66
Rev.2.0
2022-05-06
INFINEON [ Infineon ]
