Robert Boschgmbh

Mathias Kugel

Werner Fischer

Peter Grosshans

The digital interface unit ( ) for control of a peripheral device, especially for controlling a magnetic valve for an injection device, includes a plurality of output registers ( to ), which store and output a set of control variables applied to the input sides of the respective output registers in response to a control signal ( , MST E). So that the control variables are output from the output registers exactly simultaneously even though they are received sequentially, at least one group of buffer registers ( to to ) is connected to the output registers ( to ). The buffer register or registers provides intermediate storage for the control variables prior to output from the interface unit.

Digital interface unit with selective input registers providing control values to output registers that simultaneously output the control values when activated by control line

The external intelligent component ( ) connected with a microprocessor system ( ) is described for essentially automatic control of a control element ( ) without burdening the microprocessor system operation. The control parameters for the control element ( ) are written into a data memory ( ) of the external component ( ) from the microprocessor system ( ) and are read out internally from the data memory ( ) during normal operation of the external component ( ). Control of the external component ( ) is possible by the microprocessor system ( ) without blocking the system bus ( ) of the microprocessor system ( ) using a control line from the microprocessor to a reset input (RESET) of a controller ( ) of the external component ( ).

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Stuttgart, Germany

Mathias Kugel