Interface device, node, interface system, method for controlling bus reset and computer program product for controlling bus reset

Abstract

With reference to an interface that performs bus reset and reconfiguration of a bus when a node is plugged or unplugged in correspondence with the hot swapping function, when the node plugging/unplugging detector detects plugging or unplugging of a node, the data transfer detector detects whether data related to a specific node is transferred on the bus. When it is detected that the data related to the specific node is transferred, the bus reset issue controller holds the notification of the unplugging of said node to the physical layer until the data transfer is completed, thus delaying the issue of the bus reset. The interface device is capable of delaying only the specific data transfer being preferable not to be interrupted thus effectively protecting the hot swapping function.