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2024年5月19日发(作者：img照片用什么软件打开)

专利内容由知识产权出版社提供

专利名称：Universal DMA (Direct Memory Access)

Architecture

发明人：Rahoul Puri,Arvind Srinivasan,Elisa Rodrigues

申请号：US12017039

申请日：20080120

公开号：US2A1

公开日：20090723

专利附图：

摘要：A universal DMA (Direct Memory Access) engine can be dynamically configured

to function in either a receive or transmit mode. DMAs are logically assembled and

bound as needed, without limitation to a fixed, pre-determined number of receive

engines and transmit engines. Because a DMA engine may be dynamically assembled to

support the flow of data in either direction, varied usage models are enabled, and

components used to assemble a receive DMA engine for one application may be

subsequently used to assemble a transmit engine for a different application. An

application may request a specific number of each type of engine, depending on the

nature of its input/output traffic. The number of receive or transmit engines can be

dynamically increased or decreased without suspending or rebooting the host. A

universal DMA architecture provides a unified software framework, thereby decreasing

the complexity of the software and the hardware gate count cost.

申请人：Rahoul Puri,Arvind Srinivasan,Elisa Rodrigues

地址：Los Altos CA US,San Jose CA US,Union City CA US

国籍：US,US,US

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