Patent ID: 7779187
Filing Date: 2010-08-17
Classification: G06F,H04L

Abstract:
1. A data communication circuit comprising: a receiving unit that receives data via a serial bus; an arbiter that arbitrates the received data by using an arbitration table to obtain arbitrated data; an outputting unit that outputs the arbitrated data to the serial bus; a statistical-information generating unit that is provided on one serial path at an output of a transaction layer constituting architecture of the serial bus, and that generates statistical information about a traffic based on a quantity of packet data transferred on the one serial path; and a weight-information updating unit connected to the statistical-information generating unit, that receives the statistical information from the statistical-information generating unit, and that updates weight information of the arbitration table based on the statistical information generated by the statistical-information generating unit, wherein the statistical-information generating unit generates the statistical information based on the quantity of the packet data which is indicated by information included in a length field of a data transfer request packet output from the transaction layer.