Subscriber and communication controller of a communication system and method for implementing a gateway functionality in a subscriber of a communication system

摘要

A subscriber of a communication system includes a microprocessor, at least two communication controllers and a peripheral bus. The microprocessor is connected to the communication controllers via the peripheral bus and is also connected via the communication controllers respectively to a communication link of the communication system, via which messages are transmitted. In order to optimize the gateway functionality within the subscriber, a provision is made that at least one of the communication controllers has an active interface via which the communication controller is connected to the peripheral bus and has a logic circuit for independently implementing a gateway functionality.

主权项

1. A subscriber of a communication system, comprising:
a microprocessor; at least two communication controllers; and a peripheral bus; wherein the microprocessor is connected to the communication controllers via the peripheral bus, wherein the microprocessor is connected via the communication controllers to at least two communication links of the communication system, wherein messages are transmitted over the communication links, wherein at least one of the communication controllers has: a) an active interface configured to be connected directly to the peripheral bus; and b) a logic circuit configured for independent implementation of a gateway functionality, wherein the gateway functionality is further implemented by performing the following:
performing an active copying of data by the logic circuit of the at least one of the communication controllers to a message memory of another one of the communication controllers, and wherein the following operations are triggered and controlled independently by the logic circuit of the at least one of the communication controllers for the active copying, as follows:
visualizing the received data in a buffer memory of the at least one of the communication controllers;creating a copy of the received data in one of a) a configurable address area of a memory element assigned to the microprocessor, or b) a buffer memory of the another one of the communication controllers by write accesses via the active interface; andstarting a transfer of the stored data from the at least one buffer memory into a message memory of the another one of the communication controllers.