Patent ID: 8144039

Claim:
A semiconductor integrated device, comprising: a plurality of semiconductor chips each having a first internal circuit and a second internal circuit and being stacked while displaced from each other, wherein the first internal circuit processes a data signal in accordance with a predetermined process, wherein the second internal circuit receives a request signal from a transmission source and determines whether the request signal is a request to itself or not, wherein, when the request signal is the request to the second internal circuit itself, the second internal circuit receives a data signal from a transmission source and outputs the data signal to the first internal circuit, wherein, when the request signal is not the request to the second internal circuit itself, the second internal circuit transfers the request signal to a transfer destination, receives the data signal from the transmission source and transfers the data signal to the transfer destination, wherein the transmission source with respect to a first semiconductor chip of the plurality of semiconductor chips is a second semiconductor chip of the plurality of semiconductor chips stacked on one side from the first semiconductor chip, and wherein the transfer destination with respect to the first semiconductor chip is a third semiconductor chip of the plurality of semiconductor chips stacked on the other side from the first semiconductor chip.