A method and device for the assignment of a pci - bus to a plurality of master for access of the master to target via the pci - bus

摘要

The invention relates to a method and a device for the assignment of a pci - bus to a plurality of a master for access by the master via the pci - bus on to the pci - bus connected to the target, wherein the master via the pci - bus read - and the write actions carried out on the targets. The method according to the invention comprises a standard - arbitration procedure and a special - arbitration procedure. In the standard - arbitration procedure, the allocation rows result for the allocation of the pci - bus in accordance with the in each case for a master predetermined allocation fixed priority. The special - arbitration procedure replaces the standard - arbitration procedure, when a deterministic master, while the a request for allocation of the pci - bus has made up to the expiration of a predetermined period of time - pci bus has allocated to or if no data exchange within the period of time between the deterministic master and the addressed target was. In the special - arbitration procedure is ensured that this deterministic master in the allocation of rows with a larger frequency occurs than in the standard - arbitration procedure.