Router, method for controlling the router, and computer program

摘要

An exemplary router is provided for an integrated circuit that has distributed buses and is arranged on a transmission route that leads from a transmission node to a reception node on the distributed buses to relay data. The distributed buses include first and second routes, each leading from the router to the reception node. The router includes a notifying section which sends a data transfer permission request to a second router on the first route and a third router on the second route and which determines whether or not the request is approved before a predetermined standby period passes to see if there is any abnormality in the first and second routes.

主权项

1. A router which is provided for an integrated circuit that has distributed buses and which is arranged on a transmission route that leads from a transmission node to a reception node on the distributed buses in order to relay data, the distributed buses including first and second routes, each leading from the router to the reception node,
the router comprising: an input buffer having a plurality of data storage sections to store data; an output section configured to output the data that is stored in the input buffer and configured to have a plurality of output ports; a routing processing section configured to analyze the data to choose, for each of the first and second routes, one of the output ports through which the data is going to be output; a buffer allocator configured to associate, for each of the first and second routes, a particular one of the data storage sections that store the data with one of the data storage sections of the input buffer of a next-stage router which is connected to the output port that has been chosen by the routing processing section; a switch allocator configured to arrange a schedule to transfer the data in accordance with the association that has been made by the buffer allocator; and a notifying section configured to send a data transfer permission request to a second router on the first route and a third router on the second route and configured to determine whether or not the request is approved before a predetermined standby period passes to see if there is any abnormality in the first and second routes, wherein if the request is approved before the predetermined standby period passes, the notifying section gets the data transmitted through an output port that is connected to one of the first and second routes that has approved the request.