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TLE9271QX 데이터시트(PDF) 62 Page - Infineon Technologies AG |
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TLE9271QX 데이터시트(HTML) 62 Page - Infineon Technologies AG |
62 / 126 page TLE9271QX LIN Transceiver Datasheet 62 Rev.1.5 2019-09-27 failure. The failure is stored in the SPI flag LIN1_FAIL, LIN2_FAIL on BUS_STAT_1 and BUS_STAT_2 registers. The LIN transmitter stage is activated again after the dominant time-out condition is removed. The TXDLIN Time-Out feature can be disabled with SPI bit LIN_TXD_ TO for all LINs at the same time. Figure 26 TXDLIN Time-Out Function 9.2.6 Bus Dominant Clamping If the LIN bus signal is dominant for a time t > tBUS_LIN_TO in LIN Normal or Receieve Only Mode, then a bus dominant clamping is detected and the SPI bits LIN1_FAIL, LIN2_FAIL and are set. The transceiver configuration stays unchanged. 9.2.7 Undervoltage Detection In case the supply voltage VLIN is dropping below the VLIN undervoltage detection threshold (VLIN < VLIN,UVD), the TLE9271QX will set the LINx in Receive Only Mode (the transmitter is disabled). The receiver stage is active. If the power supply VLIN reaches a higher level than the VLIN undervoltage detection threshold (VLIN > VLIN,UVD), the TLE9271QX continues with normal operation. 9.2.8 Slope Selection The LIN transceiver offers a LIN Low-Slope Mode for 10.4kBaud communication and a LIN Normal-Slope Mode for 20kBaud 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. TXDLIN LIN ttorec ttimeout Normal Communication Normal Communication TXDLIN Time-Out due to microcontroller error Release after TXDLIN Time-out Recovery of the microcontroller error t t |
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