US Patent 7539477 Wireless LAN apparatus and semiconductor device

A wireless LAN apparatus is disclosed that includes a module group section that is connected to an upper level CPU of an upper level apparatus, an RF processing part that is connected to the module group section, a power reduction instruction dispatching section for dispatching a power reduction instruction, a power reduction instruction receiving section for receiving the power reduction instruction dispatched from the power reduction instruction section, and a power reduction sequence controlling section for controlling power of the module group section in a predetermined order in accordance with the power reduction instruction dispatched by the power reduction instruction dispatching section.