Patent ID: 6910091
Filing Date: 2005-06-21
Classification: G06F

Abstract:
1. An arbitration method for operating a bus bridge which interfaces a primary-side bus with a plurality of secondary side buses, the primary-side bus being a local bus in a system and the secondary-side buses being external buses connected to the system, the bus bridge supporting a plurality of kinds of operations one of which is an operation related to a serial bus in accordance with IEEE1394, the arbitration method operating said bus bridge by giving an access right equally to each of the secondary-side buses, when access demands to the primary-side bus are lodged from more than two of the secondary-side buses at the same time, by not giving a priority to any one of the secondary-side buses, wherein a counter is used such that access rights are provided sequentially to the more than two secondary-side buses lodging access demands and at a same rate of the lodged access demands.