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Q67006-A9584 Datasheet(PDF) 7 Page - Infineon Technologies AG |
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Q67006-A9584 Datasheet(HTML) 7 Page - Infineon Technologies AG |
7 / 25 page TLE 6254-3 G Data Sheet 7 Rev. 2.0, 2005-03-24 Circuit Description The CAN transceiver TLE 6254-3 G works as the interface between the CAN protocol controller and the physical CAN bus-lines. Figure 3 shows the principle configuration of a CAN network. The TLE 6254-3 G is optimized for low-speed data transmission (up to 125 kBaud) in automotive and industrial applications. In normal operation mode a differential signal is transmitted/received. When bus wiring failures are detected the device automatically switches in a dedicated single-wire mode to maintain communication. While no data is transferred, the power consumption can be minimized by multiple low power operation modes. Further a receive-only mode is implemented. To reduce radiated electromagnetic emission (EME) the dynamic slopes of the CANL and CANH signals are both limited and symmetric. This allows the use of an unshielded twisted or parallel pair of wires for the bus. During single-wire transmission (one of the bus lines is affected by a bus line failure) the EME performance of the system is degraded from the differential mode. In case the transmission data input TxD is permanently dominant, both, the CANH and CANL transmitting stage are disabled after a certain delay time. This is necessary to prevent the bus from being blocked by a defective protocol unit or short to GND at the TxD input. Figure 3 CAN Network Example Controller 1 RxD TxD Transceiver 1 1 1 Local Area 1 Transceiver 2 Local Area 2 Controller 2 Bus Line AES02410 TxD 2 RxD2 |
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