Patent ID: 8090915

Claim:
A packet transmission control apparatus connected to a data requestor via an interface, the packet transmission control apparatus comprising: a memory that stores data to be requested from the data requestor; a BUSY control circuit that receives a request for data from the data requestor via the interface, and recognizes a BUSY state of the data requestor; a plurality of controllers that control a received request for data from the BUSY control circuit, and a response of data from the memory to the data requestor based on the recognized BUSY state; a first selector that connects to the plurality of controllers and the memory; a second selector that connects to the plurality of controllers and the interface; a first arbitrator that instructs the first selector to select one of the plurality of controllers to transfer a received request for data from the BUSY control circuit to the memory, and to receive a response of data from the memory; and a second arbitrator that instructs the second selector to select one of the plurality of controllers to transfer a received response of data from the memory to the data requestor via the interface.