| 摘要 |
A semiconductor device capable of connecting plurality of external devices. When an interface with a first external device that can be connected to the semiconductor device is tested, a packet to be transferred from the first external device to another second external device is artificially generated. The generated packet is transferred to the second external device, and a response is monitored. Thus, the interface for connection to the first external device is tested while avoiding an actual packet transfer between the semiconductor device and the first external device.
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