Patent
1997-10-24
1999-03-02
Donaghue, Larry D.
39520066, 395877, 395843, G06F 1516, G06F 1200
Patent
active
058782176
ABSTRACT:
A network controller has a default non-DMA mode of data transfer that transfers received data frames to a desired location in internal memory under control of a host CPU. A DMA mode of data transfer is engaged to transfer accumulated data frames via a DMA controller to system memory when the host CPU is not available to handle the frame processing. An automatic switch back mechanism is provided to allow the network controller to automatically switch back to the non-DMA data transfer mode as soon as the host CPU is able to return to processing of received frames.
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Cirrus Logic Inc.
Donaghue Larry D.
Nguyen Frank D.
Stewart David L.
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