PURPOSE: To supply control data to a multifunction type IC.

CONSTITUTION: The control data supplied by a bus line, are stored through a bus decoder 30 in latch circuits 33A-33N corresponding to each control data. And also, the data stored in the latch circuits are successively read out by a timing generating circuit 35, converted into analog signals by a shared D/A converter 38, successively held in sample/hold circuits 39A-39N, and used as the adjusting signals of the IC.