IMAGE FORMING DEVICE USING AN I¬2C BUS AND A CONTROLLING METHOD THEREOF, ESPECIALLY CONCERNED WITH SIMPLIFYING PERIPHERAL CIRCUITS BY CONNECTING PERIPHERAL APPARATUSES WITH A SHARED SERIAL BUS

摘要

PURPOSE: An image forming device using an I¬2C bus and a controlling method thereof are provided to perform a data transceiving process through a serial bus between slave devices and a master device, thereby simplifying peripheral circuits while reducing material cost. CONSTITUTION: A plurality of detecting sensors(S1-Sn) detect operational states of peripheral apparatuses. A/D converters(295a-295n) convert detection result signals outputted from the sensors(S1-Sn) into digital signals. Slave devices(290a-290n) separately store the converted digital signals, and transmit the stored signals by corresponding to a detection result request signal. A master device(275) requests the slave devices(290a-290n) to transmit the detection result signals for at least one of the detecting sensors(S1-Sn). The slave devices(290a-290n) and the master device(275) transceive data with each other through a serial bus.