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公开(公告)号：US10824583B2
公开(公告)日：2020-11-03
申请号：US16775170
申请日：2020-01-28
Applicant: NXP B.V.
Abstract: The present disclosure relates to a bus device and a corresponding bus system. Furthermore, the present disclosure relates to a corresponding method of operating a bus device.In accordance with a first aspect of the present disclosure there is provided a bus device comprising a bus protocol controller with a transmit data output and a bus transceiver with a transmit data input coupled to the transmit data output of the bus protocol controller, wherein the bus protocol controller is configured to provide a serial bit stream designated for transmission through a bus via the transmit data output of the bus controller and via the transmit data input to the bus transceiver and to provide a switching signal within the serial bit stream, and wherein the bus transceiver is configured to switch between different operating modes in response to the switching signal.
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公开(公告)号：US20200250127A1
公开(公告)日：2020-08-06
申请号：US16775170
申请日：2020-01-28
Applicant: NXP B.V.
Abstract: The present disclosure relates to a bus device and a corresponding bus system. Furthermore, the present disclosure relates to a corresponding method of operating a bus device.In accordance with a first aspect of the present disclosure there is provided a bus device comprising a bus protocol controller with a transmit data output and a bus transceiver with a transmit data input coupled to the transmit data output of the bus protocol controller, wherein the bus protocol controller is configured to provide a serial bit stream designated for transmission through a bus via the transmit data output of the bus controller and via the transmit data input to the bus transceiver and to provide a switching signal within the serial bit stream, and wherein the bus transceiver is configured to switch between different operating modes in response to the switching signal.
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公开(公告)号：US10439840B1
公开(公告)日：2019-10-08
申请号：US16048159
申请日：2018-07-27
Applicant: NXP B.V.
Inventor： Bernd Uwe Gerhard Elend , Matthias Berthold Muth , Steffen Mueller
IPC: H04L12/413 , G06F13/376 , H04L5/00 , G06F13/374 , H04L12/40
Abstract: Embodiments of a device and method are disclosed. In an embodiment, a method for communicating data frames on a bus that operates according to a multi-master bus protocol is disclosed. The method involves beginning transmission of a data frame from a node on the bus when the node gains control of the bus, wherein the multi-master bus protocol specifies a frame format that includes a start portion, a payload portion, and an end portion, during transmission of the payload portion of the data frame, inserting an in-payload arbitration field into the transmission, continuing transmission of the data frame if the node maintains control of the bus after insertion of the in-payload arbitration field, and halting transmission of the data frame before transmission of the data frame is complete if the node losses control of the bus after insertion of the in-payload arbitration field.
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24.发明申请公开(公告)号：US20190182074A1
公开(公告)日：2019-06-13
申请号：US16205778
申请日：2018-11-30
Applicant: NXP B.V.
Inventor： Matthias Berthold Muth , Georg Olma
IPC: H04L12/40 , H04L12/413 , H04B3/46 , H04L29/06
Abstract: The present application relates to a node for conducting measurements and signal analyses on a bus supporting multi-master access of a plurality of nodes or a transceiver of the node. The transceiver is configured to detect bus signals and to convert the detected bus signals into a bit stream. A protocol engine is arranged to receive the bit stream. The protocol engine transitions between states, which are indicative of at least an exclusive access phase, during which only one of the plurality of nodes is allowed to assert signals on the bus. A detector is configured to assert an enable indication for a period of time on detecting that the protocol engine is in a state indicative of the exclusive access phase. A diagnosis module is configured to conduct measurements in response to the asserted enable indication.
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公开(公告)号：US20190058614A1
公开(公告)日：2019-02-21
申请号：US15681363
申请日：2017-08-19
Applicant: NXP B.V.
IPC: H04L12/40 , H04L12/417 , H04L29/06 , H04L12/933
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.
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Patent Agency Ranking
26.发明申请CONTROLLER AREA NETWORK (CAN) DEVICE AND METHOD FOR OPERATING A CAN DEVICE 有权控制器区域网络（CAN）装置和用于操作CAN设备的方法公开(公告)号：US20160344703A1
公开(公告)日：2016-11-24
申请号：US14812909
申请日：2015-07-29
Applicant: NXP B.V.
Inventor： Vibhu Sharma , Matthias Berthold Muth
CPC classification number: H04L63/0428 , G06F13/4282 , G06F21/567 , G06F21/602 , G06F21/606 , G06F21/85 , H04L12/40006 , H04L12/40032 , H04L63/1408 , H04L63/168 , H04L2012/40215 , H04L2012/40273
Abstract: Embodiments of a device and method are disclosed. In an embodiment, a Controller Area Network (CAN) device includes a security module connected between a CAN bus interface of a CAN transceiver and a microcontroller communications interface of the CAN transceiver and a shield device connected between the CAN bus interface and the microcontroller communications interface. The security module is configured to perform a security function on data traffic received from the CAN bus interface or from a Serial Peripheral Interface (SPI) interface of the microcontroller communications interface. The shield device is configured to direct CAN Flexible Data-rate (FD) traffic received from the CAN bus interface to the security module.
Abstract translation: 公开了一种装置和方法的实施例。 在一个实施例中，控制器局域网（CAN）设备包括连接在CAN收发器的CAN总线接口和CAN收发器的微控制器通信接口之间的安全模块以及连接在CAN总线接口和微控制器通信接口之间的屏蔽设备 。 安全模块被配置为对从CAN总线接口或从微控制器通信接口的串行外设接口（SPI）接口接收的数据业务执行安全功能。 屏蔽设备被配置为将从CAN总线接口接收到的CAN灵活数据速率（FD）业务指向安全模块。
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27.发明公开公开(公告)号：US20240356773A1
公开(公告)日：2024-10-24
申请号：US18638086
申请日：2024-04-17
Applicant: NXP B.V.
Inventor： Bernd Uwe Gerhard Elend , Matthias Berthold Muth
CPC classification number: H04L12/40013 , G06F11/0745 , H04L2012/40215
Abstract: 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.
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公开(公告)号：US11789886B2
公开(公告)日：2023-10-17
申请号：US17657069
申请日：2022-03-29
Applicant: NXP B.V.
CPC classification number: G06F13/4068 , H04L12/40 , H04L2012/40215
Abstract: A Controller Area Network, CAN, device comprising: a compare module configured to interface with a CAN transceiver, a CAN decoder configured to decode an identifier of a CAN message received from the RXD input interface; an identifier memory configured to store an entry that corresponds to at least one identifier; 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 upon a match; a signal generator configured to output, in response to the match signal, a signal to invalidate the CAN message, wherein the signal is output from the TXD output interface to the CAN transceiver; and wherein the signal generated by the signal generator provides for one or more dominant bits that are timed so that at a bit immediately following a FDF field or the FDF field bit is made dominant.
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公开(公告)号：US11722327B2
公开(公告)日：2023-08-08
申请号：US17302730
申请日：2021-05-11
Applicant: NXP B.V.
Inventor： Matthias Berthold Muth
CPC classification number: H04L12/12 , H04L12/40 , H04L2012/40215
Abstract: A Controller Area Network, CAN, transceiver comprising: two terminals for coupling to a CAN bus; a transmitter arrangement configured to transmit signalling on the bus based on transmit data, the transmitter arrangement configured to drive the bus to a dominant state or recessive state based on the transmit signal; an impedance control device; a signalling detector to determine the length of time the transmit data comprises a logic zero prior to a transition to a logic one state and: based on the length of time being longer than a predetermined threshold, provide for control of an output impedance by the impedance control device in accordance with a first scheme; and based on the length of time being shorter than said predetermined threshold, provide for one of: control of said output impedance in accordance with a second scheme; and no control of the output impedance by the impedance control device.
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公开(公告)号：US11588663B1
公开(公告)日：2023-02-21
申请号：US17450191
申请日：2021-10-07
Applicant: NXP B.V.
IPC: H04L12/40 , H03K19/08 , G06F13/374
Abstract: 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.
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