A method includes determining, by one or more processing entities associated with at least one of: one or more low voltage drive circuits (LVDCs) and one or more other LVDCs, an initial data conveyance scheme and an initial communication scheme for each communication of a plurality of communications on one or more lines of a bus. The method further includes determining a desired number of channels for each communication of the plurality of communications based on the initial data conveyance scheme and the initial communication scheme, a desired total number of channels for the plurality of communications based on the desired number of channels, determining whether the desired total number of channels for the plurality of communications exceeds a total number of available channels. If not, allocating the desired number of channels to each communication of the plurality of communications in accordance with the channel allocation mapping.

In one embodiment, an apparatus includes: a peer-to-peer (P2P) control circuit to issue a P2P communication request to a bus master of a multi-drop interconnect to request authorization to send a P2P transaction to at least one slave device coupled to the multi-drop interconnect; a transmitter to transmit the P2P transaction to the at least one slave device when the bus master grants the authorization for the P2P transaction; and another transmitter to output the clock signal to the multi-drop interconnect during the P2P transaction. Other embodiments are described and claimed.

Systems and methods for simulation and testing of multiple virtual electronic control units (VECUs). A method (1000) includes executing, by one or more computer systems (101), a first VECU (502). The method includes executing a virtual bus (510), the virtual bus (510) associated with the first VECU (502). The method includes executing at least one second VECU. The method includes simulating a multiple-VECU system by managing communications, using the virtual bus (510), between the first VECU (502) and the at least one second VECU.

Disclosed are a module assembly and a multi-master communication method thereof, and more particularly, a module assembly including a plurality of modules capable of transmitting/receiving data by forming an open drain based one-wire communication bus upon mutual combination, in which at least one module requiring the data transmission among the plurality of modules performs first declaration for a transmission intention by outputting a low signal within a predetermined first arbitration time when at least one module is in an on state by sensing the one-wire communication bus state, at least one module performing the first declaration for the transmission intention performs second declaration for the transmission intention by outputting a high signal within a second arbitration time, and a module which outputs the high signal last within the second arbitration time secures final bus occupation.

An architecture for a multichannel geophysical data acquisition system is provided in the field of electrical resistivity tomography. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. A novel use of high voltage isolation barriers is also provided. A direct memory access data transfer process is provided.

A control system includes a master device and one or a plurality of slave devices connected to the master device via a field network. In a storage unit of each slave device, a node address is arranged in a unique region for each model of the slave devices. The control system further includes an information providing part which provides, in any slave device, information for specifying the region in which the node address is stored in the storage unit to the master device.

A system for automatically addressing serially connected slave devices includes a master device and multiple slave devices each including a serial communication transceiver, an address input port, an address output port, and a controller. The system also includes a serial communication wiring bus connected between the serial communication transceivers of the master and slave devices, and at least one digital address line connected between the address input ports and the address output ports. Each controller is configured to receive a PWM or PFM signal from a previous one of the multiple slave devices, determine an address for the slave device including the controller according to the received PWM or PFM signal, and transmit a PWM or PFM signal indicative of the determined address to a subsequent one of the multiple slave devices.

A single-wire bus (SuBUS) apparatus is provided. The SuBUS apparatus includes a master circuit coupled to a slave circuit(s) by a SuBUS. The master circuit can enable or suspend a SuBUS telegram communication over the SuBUS. When the master circuit suspends the SuBUS telegram communication over the SuBUS, the slave circuit(s) may draw a charging current via the SuBUS to perform a defined slave operation. Notably, the master circuit may not have knowledge about exact completion time of the defined slave operation and thus may be unable to resume the SuBUS telegram communication in a timely manner. The slave circuit(s) can be configured to generate a predefined interruption pulse sequence to cause the master circuit to resume the SuBUS telegram communication over the SuBUS. As such, it may be possible for the master circuit to quickly resume the SuBUS telegram communication, thus helping to improve throughput of the SuBUS.

An embodiment method of operating a CAN bus comprises coupling a first device and second devices to the CAN bus via respective CAN transceiver circuits, and configuring the respective CAN transceiver circuits to set the CAN bus to a recessive level during transmission of messages via the CAN bus by the respective first device or second devices.

A method includes detecting, by a first LVDC affiliated with a first host device, a request for a one-to-one communication with a second LVDC affiliated with a second host device, where data is conveyed between the LVDCs by varying loading on a bus at a frequency. The method further includes determining a desired number of channels to support the one-to-one communication based on one or more of: the first host device, the second host device, and information contained in the request, wherein the channels correspond to frequencies in a frequency band. The method further includes determining whether the desired number of channels is available for the one-to-one communication. When the desired number of channels is available for the one-to-one communication, allocating them for the one-to-one communication.