US Patent 7327750 Receiving apparatus based on communications protocol

An example receiving apparatus includes a reception clock controlling section for controlling clock supply to the components thereof. A reception section receives a communication packet transmitted from a destination and a received packet analyzing section judges whether or not the received packet is correct and analyzing the received packet. A reception memory section stores the received packet of any packet type and a reception registering section stores the received packet until a clock is supplied to the reception memory section. A received data outputting section outputs the received packet stored in the reception registering section and the reception memory section to a host CPU.