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TLE7250GVIO Datasheet(PDF) 6 Page - Infineon Technologies AG |
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TLE7250GVIO Datasheet(HTML) 6 Page - Infineon Technologies AG |
6 / 23 page Data Sheet 6 Rev. 1.0, 2012-03-14 TLE7250GVIO Functional Description 4 Functional Description CAN is a serial bus system that connects microcontrollers, sensors and actuators for real-time control applications. The use of the Control Area Network (abbreviated CAN) within road vehicles is described by the international standard ISO 11898. According to the 7-layer OSI reference model, the physical layer of a CAN bus system specifies the data transmission from one CAN node to all other available CAN nodes within the network. The physical layer specification of a CAN bus system includes all electrical and mechanical specifications of a CAN network. The CAN transceiver is part of the physical layer specification. Several different physical layer standards of CAN networks have been developed in recent years. The TLE7250GVIO is a High Speed CAN transceiver without a dedicated wake-up function. High-speed CAN transceivers without a wake-up function are defined by the international standard ISO 11898-2. 4.1 High Speed CAN Physical Layer Figure 3 High Speed CAN bus signals and logic signals VCC CAN_H CAN_L TxD VIO = Digital supply VCC = High Speed CAN power supply TxD = Input from the microcontroller RxD = Output to the microcontroller CANH = Voltage on the CANH input/output CANL = Voltage on the CANL input/output VDIFF = Differential voltage between CANH and CANL VDIFF = VCANH – VCANL RxD VDIFF “dominant“ “recessive“ VIO VIO t t t t VDIFF = ISO level “dominant“ VDIFF = ISO level “recessive“ |
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