| 摘要 |
According to one embodiment, a wiring board includes a transmission line provided to perform communications between a first semiconductor chip and a second semiconductor chip, the transmission line is formed of a distributed constant wiring portion having a characteristic impedance matched to one of an output impedance of the first semiconductor chip and an output impedance of the second semiconductor chip, and a lumped constant wiring portion which is narrower than the distributed constant wiring portion and shorter than a length which can be regarded as a lumped constant circuit.
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