Electronic apparatus including device configured to be shifted to power saving state and connected to PCI device, and control method thereof

摘要

An electronic apparatus includes a semiconductor integrated circuit, another semiconductor integrated circuit connected to the semiconductor integrated circuit via a peripheral component interconnect (PCI) bus, and devices (a hard disk drive (HDD), and a dynamic random access memory (DRAM)) connected to the another semiconductor integrated circuit. The semiconductor integrated circuit transmits a predetermined instruction to the another semiconductor integrated circuit, and the another semiconductor integrated circuit shifts the PCI bus to a non-communicable state or a state communicable at low speed. Thereafter, the another semiconductor integrated circuit shifts the devices (the HDD and the DRAM) to a power saving state.