AUTONOMOUS METHOD OF INITIALIZING OPPOSING PORTS OF SEMICONDUCTOR INTEGRATED CIRCUITS, AND SEMICONDUCTOR INTEGRATED CIRCUITS

摘要

The present invention detects, on a transmission path that connects a first semiconductor integrated circuit that is started up by a system management device and a second semiconductor integrated circuit that is not started up by the system management device, that the first semiconductor integrated circuit is connected to the second semiconductor integrated circuit, and makes each of the lanes of the transmission path become a first signal state for detecting valid lanes, and after that, makes the lanes become a second signal state wherein the lanes will correspond to each of the bits of an initial setting code. The second semiconductor integrated circuit detects the first and second signal states for each of the lanes of the transmission path, and upon detecting, on the basis of the first and second signal states detected for each of the lanes, a sequence of the first signal state and then the second signal state, decodes each of the bits of the initial setting code. Then, the first semiconductor integrated circuit and the second semiconductor integrated circuit execute initialization of the opposing ports onto which the transmission path is connected, on the basis of the decoded initial setting code.