发明授权
US08209446B2 DMA controller that passes destination pointers from transmit logic through a loopback buffer to receive logic to write data to memory
有权
DMA控制器通过环回缓冲区传送来自传输逻辑的目标指针，以接收将数据写入存储器的逻辑
- 专利标题： DMA controller that passes destination pointers from transmit logic through a loopback buffer to receive logic to write data to memory
- 专利标题（中）： DMA控制器通过环回缓冲区传送来自传输逻辑的目标指针，以接收将数据写入存储器的逻辑
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申请号： US13221622申请日： 2011-08-30
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公开(公告)号： US08209446B2公开(公告)日： 2012-06-26
- 发明人: Dominic Go , Mark D. Hayter , Zongjian Chen , Ruchi Wadhawan
- 申请人： Dominic Go , Mark D. Hayter , Zongjian Chen , Ruchi Wadhawan
- 申请人地址： US CA Cupertino
- 专利权人： Apple Inc.
- 当前专利权人： Apple Inc.
- 当前专利权人地址： US CA Cupertino
- 代理机构： Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- 代理商 Lawrence J. Merkel
- 主分类号： G06F13/28
- IPC分类号： G06F13/28
摘要：
In one embodiment, an apparatus comprises a first interface circuit, a direct memory access (DMA) controller coupled to the first interface circuit, and a host coupled to the DMA controller. The first interface circuit is configured to communicate on an interface according to a protocol. The host comprises at least one address space mapped, at least in part, to a plurality of memory locations in a memory system of the host. The DMA controller is configured to perform DMA transfers between the first interface circuit and the address space, and the DMA controller is further configured to perform DMA transfers between a first plurality of the plurality of memory locations and a second plurality of the plurality of memory locations.
公开/授权文献
- US20110314186A1 Unified DMA 公开/授权日：2011-12-22
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