System for providing deterministic performance from a non-deterministic device

摘要

A system for providing deterministic performance from a non-deterministic device comprises one or more nodes that perform isochronous and/or non-isochronous data transfer operations onto an input/output bus of an electronic device. A bandwidth manager preferably programs a deterministic interface with a maximum data value that is selected to prevent non-isochronous conflicts for control of the input/output bus to thereby permit successfully execution of deterministically-scheduled isochronous data transfers. The deterministic interface preferably may interrupt a non-isochronous data transfer operation whenever a data-unit total from transferred data equals the corresponding programmed maximum data value. An interrupted node may then attempt to complete the non-isochronous data transfer operation in subsequent isochronous cycles.