公开(公告)号：EP4199437A1

公开(公告)日：2023-06-21

申请号：EP21215663.2

申请日：2021-12-17

申请人： NXP B.V.

发明人： van de Burgt, Rolf ,  Elend, Bernd Uwe Gerhard ,  Walrant, Thierry G.C.

IPC分类号： H04L12/417

摘要： An apparatus for a Controller Area Network, CAN, transceiver, the apparatus comprising: a first input for receiving transmit-data, the transmit-data comprising data generated by a CAN controller to cause a CAN transceiver to transmit signalling that represents said transmit-data on the CAN bus; a second input for receiving receive-data, the receive-data indicative of signalling from the CAN bus; and wherein the apparatus is configured to: detect, in said receive-data, one or more fields of a CAN frame; and prevent transmission, by said CAN transceiver, of said signalling that represents said transmit-data at times corresponding to said detected one or more fields of the CAN frame to at least prevent an error frame in said transmit-data being transmitted.

公开(公告)号：EP4199435A1

公开(公告)日：2023-06-21

申请号：EP21215665.7

申请日：2021-12-17

申请人： NXP B.V.

发明人： Elend, Bernd Uwe Gerhard ,  van de Burgt, Rolf ,  Walrant, Thierry G.C.

IPC分类号： H04L12/40

摘要： An apparatus for a controller area network, CAN, node, the node comprising a CAN controller and a CAN transceiver that is configured to couple to a CAN bus, the apparatus comprising a CAN protocol decoder and circuitry, the apparatus configured to:
receive an RX-bitstream generated by the CAN transceiver for the CAN controller;
receive a TX-bitstream generated by the CAN controller for receipt by the CAN transceiver;
wherein the CAN protocol decoder is configured to receive a bitstream based on the TX-bitstream for decoding CAN frames therein for monitoring of the CAN controller; and wherein the circuitry is configured to:
detect an idle state;
based on the detection of the idle state, modify the bitstream received by the CAN protocol decoder such that it includes a Start-of-Frame bit further based on detection of a Start-of-frame bit in the RX-bitstream.