An electronic control device includes: a first input-output terminal and a second input-output terminal through which differential signals are input and output; a transceiver integrated circuit (IC) that transmits and receives the differential signals; a first line that connects the first input-output terminal and the transceiver IC; and a second line that connects the second input-output terminal and the transceiver IC. A first capacitance that is a capacitance between the first line and a ground is at least 80 pF and at most 220 pF, and a second capacitance that is a capacitance between the second line and the ground is at least 80 pF and at most 220 pF.

An efficient communications apparatus is described for a vector signaling code to transport data and optionally a clocking signal between integrated circuit devices. Methods of designing such apparatus and their associated codes based on a new metric herein called the ISI Ratio are described which permit higher communications speed, lower system power consumption, and reduced implementation complexity.

A driver circuit includes two pull-up portions coupled respectively between VDD and first and second driver output nodes and two pull-down sections coupled respectively between ground and third and fourth driver output nodes. The driver circuit is configurable as an RS485 driver or a CAN driver. The active diodes in the pull-up sections are turned off when necessary to prevent unwanted reverse currents between the first and second output nodes and VDD. The active diodes in the pull-down sections are turned off when necessary to prevent unwanted reverse current between ground and the third and fourth output nodes.

In a communications system that conducts differential data via a pair of wires, AC common mode noise is undesirably coupled to the wires in a noisy environment. A hybrid common mode choke (HCMC) attenuates the AC common mode noise while passing the differential data to a PHY. The HCMC includes a CMC (windings with the same polarity) and a differential mode choke (windings with opposite polarities). The CMC attenuates the AC common mode noise, and the DMC passes the attenuated AC common mode noise to termination circuity to eliminate it. Also disclosed is a technique for Kelvin sensing the DC voltage at the pair of wires, in a PoDL system, by detecting the voltage on wires that do not carry DC current, so as to provide a more accurate measurement.

System, methods and apparatus are described that facilitate transmission of data, particularly between two devices within electronic equipment. Transmission lines are selectively terminated in an N-phase polarity encoded transmitter when the transmission lines would otherwise be undriven. Data is mapped to a sequence of symbols to be transmitted on a plurality of wires. The sequence of symbols is encoded in three signals. A first terminal of a plurality of terminals may be driven such that transistors are activated to couple the first terminal to first and second voltage levels. The first terminal may further be driven such that a dedicated transistor is activated to couple the first terminal to an intermediate voltage level.

A method of configuring a network element, for example an amplifier in a VDSL network. Configuration is transmitted to the amplifier using a common mode voltage signal so that there is no interference with the telephony or DSL signals.

An example common mode (CM) voltage clamp for a node of a multidrop network includes a first and second CM voltage dividers coupled to first and second lines of a differential link; a first N-type transistor coupled to the first line via a first diode, and further coupled to the first CM voltage divider; a second N-type transistor coupled to the second line via a second diode, and further coupled to the first CM voltage divider; a first P-type transistor coupled to a ground signal of the node via a third diode, and further coupled to the second CM voltage divider; and a second P-type transistor coupled to the ground signal of the node via a fourth diode and further coupled to the second CM voltage divider, where the second CM voltage divider is further be coupled to the ground signal via a fifth diode.

Assemblies, apparatus, devices and methods useful in providing lightning protection of avionic components associated with aircraft antennas are disclosed. Aspects of the present disclosure may be used on aircraft comprising structural elements made from composite materials having a relatively low electrical conductivity. An exemplary assembly disclosed comprises: an antenna secured to a structural element of the aircraft and configured to receive wireless signals and/or transmit wireless signals external to the aircraft; a communication unit operatively connected to the antenna for signal transmission between the antenna and the communication unit; and an isolation transformer electrically disposed between the antenna and the communication unit where signal transmission between the antenna and the communication unit is conducted via the isolation transformer.

An efficient communications apparatus is described for a vector signaling code to transport data and optionally a clocking signal between integrated circuit devices. Methods of designing such apparatus and their associated codes based on a new metric herein called the ISI Ratio are described which permit higher communications speed, lower system power consumption, and reduced implementation complexity.

Described examples include an integrated circuit including a receive portion to receive an encoded transmission on a line. The receive portion has: a wake mode in which the receiver is capable of receiving the encoded transmission; and a sleep mode in which the receiver is not capable of receiving the encoded transmission. A wakeup controller monitors the line for a wakeup signal and provides a signal to the receive portion to cause the receive portion to enter the wake mode when the wakeup controller receives the wakeup signal.