Abstract: Systems and methods for protocol-tolerant communications in a Controller Area Network (CAN) are described. In some embodiments, a method may include receiving a frame at a network node; identifying, by the network node, a bit in a selected field of the frame; and determining, by the network node, that the frame follows a second format despite the bit indicating that the frame follows a first format. In other embodiments, a CAN controller includes message processing circuitry; and a memory coupled to the message processing circuitry, the memory having program instructions that configure the message processing circuit to: receive a frame; identify a bit in a selected field of the frame; and determine that the frame follows a Classical CAN format despite the bit indicating that the frame follows a flexible data-rate CAN (CAN FD) format.

Abstract: Systems and methods for protocol-tolerant communications in a Controller Area Network (CAN) are described. In some embodiments, a method may include receiving a frame at a network node; identifying, by the network node, a bit in a selected field of the frame; and determining, by the network node, that the frame follows a second format despite the bit indicating that the frame follows a first format. In other embodiments, a CAN controller includes message processing circuitry; and a memory coupled to the message processing circuitry, the memory having program instructions that configure the message processing circuit to: receive a frame; identify a bit in a selected field of the frame; and determine that the frame follows a Classical CAN format despite the bit indicating that the frame follows a flexible data-rate CAN (CAN FD) format.

Abstract: Systems and methods for multi-frame and frame streaming in a Controller Area Network (CAN) with Flexible Data-Rate (FD). In some embodiments, a method may include creating, by a device coupled to a CAN network configured to support a CAN Flexible Data-Rate (FD) protocol, a data frame comprising a field that indicates a multi-frame or streaming transmission, and transmitting the data frame in the multi-frame or streaming transmission. A CAN node may include message processing circuitry configured to receive a data frame comprising a Data Length Code (DLC) field configured to indicate multi-frame operation or streaming operation. The message processing circuitry may be further configured to receive another data frame in the absence of an arbitration process between the data frames.

Abstract: Systems and methods for indicating internal transmitter errors in a Controller Area Network (CAN). In some embodiments, a method may include initiating, by a device coupled to a CAN, transmission of a message via the CAN; detecting an error by the device during the transmission; and continuing, by the device after having detected the error, the transmission of the message without causing or indicating a bus error condition. In other embodiments, a CAN node may include message processing circuitry configured to receive a frame from a transmitter, the frame comprising a cyclic redundancy check (CRC) field, the message processing circuitry further configured to identify an internal error of the transmitter based upon the CRC field.

Abstract: Systems and methods for indicating internal transmitter errors in a Controller Area Network (CAN). In some embodiments, a method may include initiating, by a device coupled to a CAN, transmission of a message via the CAN; detecting an error by the device during the transmission; and continuing, by the device after having detected the error, the transmission of the message without causing or indicating a bus error condition. In other embodiments, a CAN node may include message processing circuitry configured to receive a frame from a transmitter, the frame comprising a cyclic redundancy check (CRC) field, the message processing circuitry further configured to identify an internal error of the transmitter based upon the CRC field.

Abstract: Systems and methods for multi-frame and frame streaming in a Controller Area Network (CAN) with Flexible Data-Rate (FD). In some embodiments, a method may include creating, by a device coupled to a CAN network configured to support a CAN Flexible Data-Rate (FD) protocol, a data frame comprising a field that indicates a multi-frame or streaming transmission, and transmitting the data frame in the multi-frame or streaming transmission. A CAN node may include message processing circuitry configured to receive a data frame comprising a Data Length Code (DLC) field configured to indicate multi-frame operation or streaming operation. The message processing circuitry may be further configured to receive another data frame in the absence of an arbitration process between the data frames.

Abstract: Systems and methods for handling wake-up messages in a Controller Area Network (CAN) are described. In some embodiments, a method may include operating a CAN controller in a selected one of a plurality of operating modes in response to the detection of an event or activity on a CAN bus. The method may also include handling, by the CAN controller, a CAN message using a message handling protocol associated with the selected one of the plurality of operating modes, for example, while a host processor operates in a low power mode. In various implementations, each of the plurality of operating modes may correspond to a different amount of power consumption by the CAN controller. The method may further include transmitting a selected one of a plurality of response messages by the CAN controller over the CAN bus, in some cases, without waking up the processor from the low power mode.

Abstract: Systems and methods for handling wake-up messages in a Controller Area Network (CAN) are described. In some embodiments, a method may include operating a CAN controller in a selected one of a plurality of operating modes in response to the detection of an event or activity on a CAN bus. The method may also include handling, by the CAN controller, a CAN message using a message handling protocol associated with the selected one of the plurality of operating modes, for example, while a host processor operates in a low power mode. In various implementations, each of the plurality of operating modes may correspond to a different amount of power consumption by the CAN controller. The method may further include transmitting a selected one of a plurality of response messages by the CAN controller over the CAN bus, in some cases, without waking up the processor from the low power mode.

Abstract: A mask-configurable smart power integrated circuit includes arrays of associated NMOS FETs that perform functions such as control, amplification and sampling of output variables. The arrays include NMOS basic cells using FET arrangements such as LDD, LDSD-NMOS, LDMOS, or N-channel DMOS. The smart power integrated circuits are useful to provide switching to power cells and drives, and protection from overload conditions.