Invention Grant
US08417844B2 DMA controller which performs DMA assist for one peripheral interface controller and DMA operation for another peripheral interface controller
有权
DMA控制器为一个外设接口控制器执行DMA辅助，并为另一个外设接口控制器执行DMA操作
- Patent Title: DMA controller which performs DMA assist for one peripheral interface controller and DMA operation for another peripheral interface controller
- Patent Title (中): DMA控制器为一个外设接口控制器执行DMA辅助，并为另一个外设接口控制器执行DMA操作
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Application No.: US13474373Application Date: 2012-05-17
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Publication No.: US08417844B2Publication Date: 2013-04-09
- Inventor: Dominic Go , Mark D. Hayter , Zongjian Chen , Ruchi Wadhawan
- Applicant: Dominic Go , Mark D. Hayter , Zongjian Chen , Ruchi Wadhawan
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Agent Lawrence J. Merkel
- Main IPC: G06F13/28
- IPC: G06F13/28
Abstract:
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.
Public/Granted literature
- US20120233360A1 Unified DMA Public/Granted day:2012-09-13
Information query
