Abstract: A device for allowing a CAN 2.0B controller to participate passively in CAN FD communication is described. The device is configured to identify whether a frame on RXD is a CAN FD frame and, in dependence upon identifying that the frame is a CAN FD frame, to replace a section of the CAN FD frame, including the data phase of the CAN FD frame, with substitute data having a format which complies with CAN 2.0B. The device may be included in a CAN transceiver.

Abstract: A device for allowing a CAN 2.0B controller to participate passively in CAN FD communication is described. The device is configured to identify whether a frame on RXD is a CAN FD frame and, in dependence upon identifying that the frame is a CAN FD frame, to replace a section of the CAN FD frame, including the data phase of the CAN FD frame, with substitute data having a format which complies with CAN 2.0B. The device may be included in a CAN transceiver.

Abstract: In a process for transmitting data in a data processing system and with a data processing system having distributed computer nodes (N) communicating with one another by way of a serial data bus (BUS) between which objects can be exchanged, it is provided that an object transmitted to the bus is tested in a computer node by a plurality of acceptance filters (AF1, AF2, AFm) which each have associated with them at least one receive buffer (RB1, RBn-1, RBn), and that after the receive buffer, the object is stored in a memory (M) associated with a central unit. Through the hierarchical arrangement of the acceptance filters, a freely-selectable association with the receive buffers and a definition as a band pass- or rejection filter, it is possible very flexibly to transmit further only desired objects and thus to provide an optimal configuration for managing the objects of a computer node.

Abstract: In a process for operating computing units in communication with each other by serial data transfer over a data bus, each unit having its own clock generating system and the computing units exchanging timing information over the data bus, provision is made to generate a system timing using the transfer protocol that is valid for the system. For this purpose, a time registration start signal is first fed into the data bus; thereupon, each computing unit stores its own time value upon identification of the time registration start signal, transfers the stored own time value at a later moment in time to the other computing units and stores the time values received from the other computing units. Each computing unit then compares its own stored time value with the stored time values of the other computing units and calculates the present time value of the other computing units taking into account its own present time value.