公开(公告)号：EP4451623A1

公开(公告)日：2024-10-23

申请号：EP23168569.4

申请日：2023-04-18

申请人： NXP B.V.

发明人： Elend, Bernd Uwe Gerhard ,  Muth, Matthias Berthold

IPC分类号： H04L12/417

摘要： The invention relates to a CAN controller module. The CAN controller module is configured to detect transmission errors during transmissions of bits of a CAN frame via a CAN but and to handle these transmission errors robustly such that a high transmission rate is possible even if the transmission errors occur. The invention also relates to a method for the CAN controller module.

公开(公告)号：EP4300897A1

公开(公告)日：2024-01-03

申请号：EP22182026.9

申请日：2022-06-29

申请人： NXP B.V.

发明人： de Haas, Clemens Gerhardus Johannes ,  Muth, Matthias Berthold ,  Kwakernaat, Gerald ,  van Dijk, Lucas Pieter Lodewijk

IPC分类号： H04L12/40

摘要： The present invention relates to a CAN node being configured to predict, based on the at least one response message and a reference response, a fault of the CAN network and to determine a fault location of the predicted fault of the CAN network. The present disclosure also relates to a CAN system and a method for the CAN node.

公开(公告)号：EP4451624A1

公开(公告)日：2024-10-23

申请号：EP23168573.6

申请日：2023-04-18

申请人： NXP B.V.

发明人： Elend, Bernd Uwe Gerhard ,  Muth, Matthias Berthold

IPC分类号： H04L12/417

摘要： The invention relates to a delay module for a CAN device. The delay module is configured to delay only a single signal change of an RXD signal, wherein the single signal change forms the end of an idle state. Use of the delay module allows a second RXD signal to be generated. The invention further relates to a CAN device comprising two CAN controllers. Each of the two CAN controllers may be provided with one of the two RXD signals. The CAN device may further be configured to detect possible errors based on the decoded bits of the RXD signals. As a result, the CAN device can communicate error-free with both distantly located further CAN devices and closely located further CAN devices, while ensuring a high data rate. The invention also relates to a method for the delay module.

公开(公告)号：EP4387176A1

公开(公告)日：2024-06-19

申请号：EP22212837.3

申请日：2022-12-12

申请人： NXP B.V.

发明人： Elend, Bernd Uwe Gerhard ,  Muth, Matthias Berthold

IPC分类号： H04L12/40

CPC分类号： H04L12/40026 ,  H04L2012/4021520130101

摘要： The present disclosure relates to a controller area network, CAN, device, comprising: an input interface, a processing unit, and a CAN controller, wherein the CAN controller comprising a transmit data, TXD, interface and a receive data, RXD, interface; wherein the CAN device is configured to a) receive an input message via the input interface, b) generate a TXD frame based on the input message such that the TXD frame represents the input message, c) determine a bus idle state of a CAN Bus by detecting a predetermined number of at least eleven consecutive recessive bits, referred to as termination bits, received via the RXD interface, d) determine a release state by detecting that no dominant bit is received via the RXD interface within a predefined or predetermined waiting time directly after the bus idle state, and e) start sending the TXD frame via the TXD interface at or after the release state. The present disclosure also relates to a method for the CAN device.

公开(公告)号：EP4164185A3

公开(公告)日：2023-06-28

申请号：EP22197154.2

申请日：2022-09-22

申请人： NXP B.V.

发明人： Muth, Matthias Berthold ,  de Haas, Clemens Gerhardus Johannes ,  Engelhard, Axel

IPC分类号： H04L12/40

摘要： A Controller Area Network (CAN) transceiver determines a voltage differential signal from analog signaling and provides a digital output signal at a receiver output to a CAN controller based on the voltage differential signal. The analog signaling received from the CAN bus can operate with a first voltage level scheme of a first CAN protocol and a second voltage level scheme for a second CAN protocol. A first comparator compares the voltage differential signal to a first threshold which is set to a value which differentiates between a logic low bit and logic high bit in accordance with the second CAN protocol. Filtering circuitry selectively filters an output of the first comparator based on detection of noise on the CAN bus to provide a first digital signal indicative of activity on the CAN bus according to the second CAN protocol.

公开(公告)号：EP3869742A1

公开(公告)日：2021-08-25

申请号：EP20158554.4

申请日：2020-02-20

申请人： NXP B.V.

发明人： Elend, Bernd Uwe Gerhard ,  Muth, Matthias Berthold ,  Mueller, Steffen

IPC分类号： H04L12/40

摘要： A network node for coupling to a communication bus, the node comprising:
a receiver configured to receive messages from the communication bus; and a transmitter configured to transmit first messages having a first message format and configured to transmit diagnosis messages having a second message format on the communication bus for use in determination of communication errors, wherein said transmitter is configured to send said one or more diagnosis messages having one or more of:
(i) a predetermined pattern of symbols;
(ii) a predetermined sending schedule;
(iii) a predetermined line encoding method;
(iv) a predetermined bit rate;
(v) a predetermined position in one or more of the first messages;
(vi) a predetermined signalling frequency that is out of a frequency band used for transmission of the first messages; and
(vii) a predetermined signal strength different from the signal strength used to send the first messages.

公开(公告)号：EP3852314A1

公开(公告)日：2021-07-21

申请号：EP20152539.1

申请日：2020-01-17

申请人： NXP B.V.

发明人： Muth, Matthias Berthold

IPC分类号： H04L12/40

摘要： The disclosure relates to a controller area network, CAN, transceiver and a CAN controller. The CAN transceiver is configured to: compare a signal from the CAN bus with a negative threshold level; and provide a wake-up indication to the CAN controller based on the signal matching a predetermined pattern of one or more periods in which the signal is less than the negative threshold level. The CAN controller is configured to provide instructions to transmit a wake-up indication on the CAN bus.

公开(公告)号：EP3745656A3

公开(公告)日：2021-03-17

申请号：EP20156840.9

申请日：2020-02-12

申请人： NXP B.V.

发明人： Muth, Matthias Berthold

IPC分类号： H04L12/417

摘要： A Controller Area Network, CAN, transceiver comprising a receiver arrangement for coupling to a CAN bus and configured to determine a differential signal from analog signalling received from the CAN bus; and a receive output for coupling to a CAN controller and wherein the receiver arrangement provides a digital output signal to the receive output based on the differential signal; wherein the receiver arrangement operates in at least a first mode in which it is configured to provide the digital output signal comprising logic 0 when the differential signal is greater than a first receiver threshold and provide the digital output signal comprising logic 1 when the differential signal is less than said first receiver threshold unless said differential signal satisfies a condition, whereupon the receiver arrangement is configured to provide the digital output signal comprising logic 0, wherein the condition comprises the differential signal being below an activity-voltage threshold.

公开(公告)号：EP3691198A1

公开(公告)日：2020-08-05

申请号：EP19155260.3

申请日：2019-02-04

申请人： NXP B.V.

发明人： de Haas, Clemens Gerhardus Johannes ,  Muth, Matthias Berthold

IPC分类号： H04L12/40

摘要： A Controller Area Network, CAN, device, (400) is described that includes: a CAN transmitter (430) connected to two CAN bus terminals (401, 402) of the CAN device (400); a receiver circuit (450) operably coupled to the two CAN bus terminals (401, 402) of the CAN device (400); and a controller (432) connected to the CAN transmitter (430). The controller (432) is configured to: determine whether the CAN device (400) is operating as a transmitter node or a receiver node; detect a transition of the CAN device (400) from a dominant state to a recessive state; and in response to detecting both a transition of the CAN device (400) from the dominant state to the recessive state, and the determination of whether the CAN device (400) is operating as a transmitter node or a receiver node, control an output impedance of the CAN transmitter (430) to be within an impedance value range whilst a differential driver voltage on a CAN bus (104, 304, 404) connected to the CAN device (400) decreases to a predefined voltage.

公开(公告)号：EP3148154B1

公开(公告)日：2018-03-07

申请号：EP16190655.7

申请日：2016-09-26

申请人： NXP B.V.

发明人： Elend, Bernd Uwe Gerhard ,  Buehring, Peter Michael ,  Muth, Matthias Berthold

IPC分类号： H04L12/40 ,  H04L29/06

CPC分类号： H04L43/08 ,  H04L12/40169 ,  H04L63/1416 ,  H04L67/12

摘要： Embodiments of a device and method are disclosed. A controller area network (CAN) device includes a compare module configured to interface with a CAN transceiver, the compare module having a receive data (RXD) interface configured to receive data from the CAN transceiver, a CAN decoder configured to decode an identifier of a CAN message received from the RXD interface, and an identifier memory configured to store an entry that corresponds to at least one identifier, and compare logic configured to compare a received identifier from a CAN message to the entry that is stored in the identifier memory and to output a match signal when the comparison indicates that the received identifier of the CAN message matches the entry that is stored at the CAN device. The CAN device also includes a signal generator configured to output, in response to the match signal, a signal to invalidate the CAN message.