Data bus interface for a control unit, and control unit having a data bus interface
First Claim
1. A data bus interface for a control unit of a motor vehicle control unit, the interface comprising:
- two arithmetic units which directly communicate with each other via an internal data bus without the use of an intervening memory; and
two transceivers which are configured to be selectively both connectable to a same external data bus and each connectable individually to a different one of two different external data buses, the two transceivers being interconnected with the two arithmetic units in such a way that the two arithmetic units are configured to be selectively both connectable to a same one of the two transceivers and each connectable to a different one of the two transceivers;
wherein a receiving terminal of a second of the two arithmetic units is connected via a jumper element to a connecting line between a receiving terminal of a first of the two arithmetic units and a terminal of a first of the two transceivers, andwherein if the two arithmetic units are connected to the same external data bus, the jumper element is closed, and if the two arithmetic units are connected to the two different external data buses, the jumper element is open.
1 Assignment
0 Petitions
Accused Products
Abstract
A data bus interface for a control unit, in particular for a motor vehicle control unit is described, as well as a control unit, in particular a motor vehicle control unit, having a data bus interface for accessing a data bus for communicating with another control unit via the data bus. A data bus interface may be used with a particularly high degree of flexibility and be manufactured economically. The data bus interface includes two arithmetic units, in particular two microprocessors, which communicate with each other via an internal data bus; and two transceivers which are connected either to the same external data bus or to two different external data buses and are interconnected with the two arithmetic units in such a way that the two arithmetic units are connected either to the same external data bus or to the two different data buses.
24 Citations
27 Claims
-
1. A data bus interface for a control unit of a motor vehicle control unit, the interface comprising:
-
two arithmetic units which directly communicate with each other via an internal data bus without the use of an intervening memory; and two transceivers which are configured to be selectively both connectable to a same external data bus and each connectable individually to a different one of two different external data buses, the two transceivers being interconnected with the two arithmetic units in such a way that the two arithmetic units are configured to be selectively both connectable to a same one of the two transceivers and each connectable to a different one of the two transceivers; wherein a receiving terminal of a second of the two arithmetic units is connected via a jumper element to a connecting line between a receiving terminal of a first of the two arithmetic units and a terminal of a first of the two transceivers, and wherein if the two arithmetic units are connected to the same external data bus, the jumper element is closed, and if the two arithmetic units are connected to the two different external data buses, the jumper element is open. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A data bus interface comprising:
-
a first arithmetic unit connected to a first end of at least one data transmission line, and a second arithmetic connected to a second end of the at least one data transmission line, wherein the first and second arithmetic units are configured to communicate data directly to each other via the at least one data transmission line; and a first transceiver and a second transceiver interconnected with the first and second arithmetic units via interconnection elements, wherein at least one of the interconnection elements has a plurality of states which are selectable to selectively enable connection of both the first and second arithmetic units to a same one of the first and second transceivers and connection of each of the first and second arithmetic units to a different one of the first and second transceivers. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
-
-
26. A data bus interface comprising:
-
two arithmetic units which directly communicate with each other via an internal data bus without the use of an intervening memory; and two transceivers which are interconnected with the two arithmetic units in such a way that the two arithmetic units are selectably connectable to a same one of the two transceivers and connectable to different ones of the two transceivers, the selectable connectivity depending on a selection state of at least one element interconnecting the two transceivers and two arithmetic units. - View Dependent Claims (27)
-
Specification