Can controller, can device and method for the can controller

A Controller Area Network, CAN, controller, comprising:

• an input interface,
• a transmit data, TXD, interface, and
• a processing unit,
• wherein the input interface is coupled to the processing unit,
• wherein the processing unit is configured to receive via the input interface a data packet comprising a packet priority field, a packet payload field,
• wherein the processing unit is configured to generate a first CAN frame based on the data packet, such that
• a first payload field of the first CAN frame represents at least the packet payload field and
• a first identifier field of the first CAN frame comprises a first identifier part and a second identifier part,
• wherein the first identifier part represents predefined data for identifying the CAN controller, and
• wherein the second identifier part represents the packet priority field and/or comprises a queue field representing a queue priority for the first CAN frame,
• wherein the processing unit is coupled to the TXD interface, and
• wherein the processing unit is configured to send the first CAN frame via the TXD interface.

A method for a CAN controller comprising an input interface, a transmit data, TXD, interface, and a processing unit, wherein the input interface is coupled to the processing unit, wherein the processing unit is coupled to the TXD interface, and wherein the method comprising the steps of:

• S1) Receiving a data packet at the processing unit via the input interface, the data packet comprising a packet priority field, a packet payload field;
• S2) Generating a first CAN frame based on the data packet at the processing unit, such that a first payload field of the first CAN frame represents at least the packet payload field and a first identifier field of the first CAN frame comprises a first identifier part and a second identifier part, wherein the first identifier part represents predefined data for identifying the CAN controller, and wherein the second identifier part represents the packet priority field and/or comprises a queue field representing a queue priority for the first CAN frame;
• and
• S3) Sending the first CAN frame via the TXD interface.