公开(公告)号：US20220318178A1

公开(公告)日：2022-10-06

申请号：US17657069

申请日：2022-03-29

Applicant: NXP B.V.

Inventor： Bernd Uwe Gerhard Elend ,  Matthias Berthold Muth ,  Thierry G. C. Walrant

IPC: G06F13/40 ,  H04L12/40

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.

公开(公告)号：US20210389972A1

公开(公告)日：2021-12-16

申请号：US17302752

申请日：2021-05-11

Applicant: NXP B.V.

Inventor： Matthias Berthold Muth

IPC: G06F9/46 ,  G06F9/38 ,  H04L12/40

Abstract: A Controller Area Network, CAN, bit stream sampling apparatus for a CAN controller, the apparatus configured to receive a bit stream from a CAN transceiver, the apparatus configured to: detect rising edges in said bit stream; detect, separately, falling edges in said bit stream; and generate a restored non-return-to-zero coded bit stream based at least on said detected falling edges and said detected rising edges.

公开(公告)号：US20190288870A1

公开(公告)日：2019-09-19

申请号：US15920606

申请日：2018-03-14

Applicant: NXP B.V.

Inventor： Clemens Gerhardus Johannes de Haas ,  Matthias Berthold Muth

IPC: H04L12/40 ,  H04L25/02 ,  H04L25/06 ,  H04B3/46

Abstract: Embodiments in accordance with present disclosure are directed to methods, devices, and apparatuses. An example embodiments include an apparatus comprising a differential data bus and a transceiver circuit. The transceiver circuit includes a differential driver and differential receiver that operate and communicate in the first communication mode and the second communication mode. The transceiver circuit is configured to switch to the second communication mode in response detecting a signal edge of a signal input received at the differential driver by at least one of: the differential driver being configured and arranged to drive a differential driver voltage on the differential data bus to a voltage that overrides a predefined voltage; and pre-conditioning the differential receiver for the transition to the second communication mode.

公开(公告)号：US10361934B2

公开(公告)日：2019-07-23

申请号：US14868223

申请日：2015-09-28

Applicant: NXP B.V.

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

IPC: H04L12/26 ,  H04L29/08 ,  H04L12/40 ,  H04L29/06

Abstract: 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.

公开(公告)号：US10277385B1

公开(公告)日：2019-04-30

申请号：US15990676

申请日：2018-05-27

Applicant: NXP B.V.

Inventor： Swaminatha Vijayaraj Anandan ,  Matthias Berthold Muth

IPC: H04L7/02 ,  H04L12/40 ,  H04L29/08

Abstract: A CAN bus system that permits a slave node to be connected to the CAN bus. The slave node uses a preamble of a data frame transmitted by the master node on the bus to generate an internal CAN sampling clock. The slave node over-samples frames transmitted over the bus, and monitors the sampled data for a predetermined pattern, which is used to generate the slave node CAN sampling clock. Thus, the slave node does not require or include an external crystal for generating its CAN sampling clock.