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

Abstract

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.