A communication system includes a host control device and a vicarious inputting and outputting unit that controls an electric device by communicating with the host control device. The vicarious inputting and outputting unit includes a standard board provided with a first control circuit which controls the electric device and at least one of an input circuit and an output circuit for a standard electric device. The first control circuit has an extension terminal for connection to an extension board provided with at least one of an input circuit and an output circuit for an extended electric device and is provided so as to be able to operate in response to respective specifications of plural kinds of extension terminals, and a specification of the extension terminal is set through communication with the host control device.

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.

Techniques for establishing a network connection via a physical medium after exiting a low-power state. The technique includes receiving circuit configuration information for configuring a circuit for establishing a network connection via a physical medium. The technique also includes determining first redundancy information based on the circuit configuration information. The technique also includes storing the determined first redundancy information and the circuit configuration information. The technique also includes entering, by the circuit, a low-power state, and exiting the low-power state. The technique also includes determining second redundancy information based on the stored circuit configuration information after the circuit has exited the low-power state. The technique also includes comparing the second redundancy information to the first redundancy information. The technique also includes detecting an error based on the comparing. The technique also includes outputting an indication of the detected error.

An operation method of a first communication node constituting a vehicle network includes transitioning an operation state of the first communication node to a wake-up state when a preconfigured event is detected; determining whether a physical layer collision avoidance (PLCA) function is deactivated; in response to determining that the PLCA function is deactivated, generating a message including an indicator indicating that the PLCA function is deactivated; and transmitting the message.

One or more examples relate, generally, to an apparatus. Such an apparatus includes a digital interface, a wake detect logic, and a power management connection. The digital interface may define a physical layer transceiver side of a connection between a physical layer transceiver and a physical layer controller, respectively of a 10SPE physical layer. The wake detect logic may communicate a source of detected wake from the physical layer transceiver to the physical layer controller via the digital interface. The power management connection may operatively couple to an enable connection of a switched voltage regulator.

In a system and method of operating a system that includes a controller and a first bus participant and a successor, the bus participant and successor each has a circuit arrangement arranged between an output and an input, a first resistor is arranged between the output and the supply voltage terminal, a second resistor is arranged between the input and a ground terminal, a third resistor can be arranged between the input and the supply voltage terminal by a first controllable semiconductor switch, and a fourth resistor can be arranged between the output and the supply voltage terminal by a second controllable semiconductor switch.

Systems and methods for programmable pulse density modulation (PDM) components enable backwards compatibility while maintaining reasonable tolerances. A system includes a programmable PDM device, a PDM master device and a bus communicably coupling the programmable PDM device to the PDM receiver. The PDM device may include an audio sensor, audio input circuitry, a delta-sigma converter and a PDM transmitter and receiver. The PDM transmitter and receiver may send out PDM data from the PDM device and receive programming data from the PDM Master device. The PDM device may further include register space controlled by the PDM master device, a buffer storing audio data for wakeup word systems that store audio data when the PDM receiver is powered down, a bus holder to hold the previous value on the bus if no device is driving it, and/or a clock multiplier to multiply the incoming clock by a factor.

A receiver circuit includes a feedback loop including a device. The receiver circuit also includes a register and a sequencer. The sequencer is configured to, responsive to an error signal being below a threshold value, cause the register to store a value indicative of the state of the feedback loop. The sequencer is also configured to cause the feedback loop to transition to a lower power state, and, responsive to a detected wake-up event, cause the previously stored value indicative of the state of the feedback loop to be loaded from the register into the device and enable the feedback loop.

The invention relates to a communication network for an aircraft comprising at least one processing member and a first switch which is connected to the first processing member in order to provide data exchange within the first processing member and/or between the first processing member and at least one user terminal remote from the first processing member and connected to the first switch. According to the invention, the first switch comprises local means for observing logical communication channels of the first switch, and the first processing member includes means for controlling said observation means.

A communication system, including: a trailer module disposed on a cargo trailer, the trailer module including a trailer identification number for the cargo trailer; a tractor module disposed on a cargo tractor, the tractor module to electrically couple to the trailer module; and a communications bus to couple the trailer module to the tractor module when the trailer is coupled to the tractor, wherein, when coupled to the tractor module, the trailer module communicates the trailer identification to the tractor module.