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

A digital interface unit for activating a peripheral device, said digital interface unit having an input side and an output side and comprising

• data input means (16) for receiving control values for controlling the peripheral device;
• a plurality of output registers (2 to 5) for storing the control values received via the data input means (16) and for providing the control values simultaneously to the peripheral device on said output side in order to activate the peripheral device, said output registers having respective control inputs each connected with a first control line (MST E) whereby said control values present on said input side are simultaneously stored in said output registers when said control inputs of said output registers are activated by a control signal on said first control line (MST E);
• respective buffer registers (12 to 15) connected between said data input means (16) and corresponding output registers (2 to 5) for temporarily storing said control values prior to providing said control values simultaneously to said output registers;
• and
• a bus connected to said respective buffer registers (12 to 15) on said input side for selective addressing of said respective buffer registers.