Controller area network (can) device and method for operating a can device
AssigneeNXP B.V.
InventorsClemens Gerhardus Johannes de Haas, Matthias Berthold Muth
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Abstract
Embodiments of a method, a device and a computer-readable storage medium are disclosed. In an embodiment, a method for operating a Controller Area Network (CAN) device involves detecting a transition of a CAN transceiver of the CAN device from a dominant state to a recessive state and in response to detecting a transition of the CAN transceiver from the dominant state to the recessive state, controlling an output impedance of the CAN transceiver to be within a predefined range of an impedance value at the dominant state while a differential driver voltage on a CAN bus connected to the CAN transceiver decreases to a predefined voltage.
Claims20
A method for operating a Controller Area Network (CAN) device, the method comprising:
- detecting a transition of a CAN transceiver of the CAN device from a dominant state to a recessive state;
- and
- in response to detecting a transition of the CAN transceiver from the dominant state to the recessive state, controlling an output impedance of the CAN transceiver to be within a predefined range of an impedance value at the dominant state while a differential driver voltage on a CAN bus connected to the CAN transceiver decreases to a predefined voltage.
A Controller Area Network (CAN) device, the CAN device comprising:
- an impedance bridge connected to two CAN bus terminals of the CAN device;
- and
- an impedance controller connected to the impedance bridge, wherein the impedance controller is configured to:
- detect a transition of a CAN transceiver of the CAN device from a dominant state to a recessive state;
- and
- in response to detecting a transition of the CAN transceiver from the dominant state to the recessive state, control an output impedance of the impedance bridge to be within a predefined range of an impedance value at the dominant state while a differential driver voltage on a CAN bus connected to the CAN transceiver decreases to a predefined voltage.
A non-transitory computer-readable storage medium storing program instructions for operating a Controller Area Network (CAN) device, wherein execution of the program instructions by one or more processors of a computer system causes the one or more processors to perform steps comprising:
- detecting a transition of a CAN transceiver of the CAN device from a dominant state to a recessive state;
- and
- in response to detecting a transition of the CAN transceiver from the dominant state to the recessive state, controlling an output impedance of the CAN transceiver to be within a predefined range of an impedance value at the dominant state while a differential driver voltage on a CAN bus connected to the CAN transceiver decreases to a predefined voltage.
Dependencies are inferred from the claim text.