Method and apparatus for controlling task execution in a direct memory access controller
作者： Charles Edward Nuckolls , Gary R. Morrison , Peter J. Myers
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摘要: Method for maintaining an execution interval a task requestor to DMA. A timer is provided with two counters, one ( 34 ) maintain the and second 32 track time of in Each has predetermined allowance. acknowledge (TACK) signal enables tracking. request (TREQ) generated during each until allowance completed. The length counter less than first counter. In embodiment, if expires before completed, error (TERR) illustrated.
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