发明授权
- 专利标题: Method and apparatus for controlling direct memory access
- 专利标题(中): 用于控制直接存储器访问的方法和装置
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申请号: US11932718申请日: 2007-10-31
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公开(公告)号: US08037214B2公开(公告)日: 2011-10-11
- 发明人: In Ki Hwang , Woo Sug Jung , Do Young Kim
- 申请人: In Ki Hwang , Woo Sug Jung , Do Young Kim
- 申请人地址: KR Daejeon
- 专利权人: Electronics and Telecommunications Research Institute
- 当前专利权人: Electronics and Telecommunications Research Institute
- 当前专利权人地址: KR Daejeon
- 代理机构: Rabin & Berdo, P.C.
- 优先权: KR10-2006-0120371 20061201; KR10-2007-0067264 20070704
- 主分类号: G06F13/28
- IPC分类号: G06F13/28 ; H04L12/56
摘要:
Provided are a method and apparatus for controlling direct memory access. In the method, data to be transmitted are read and stored in response to a direct memory access controller (DMAC) operation request, and a portion of the data corresponding to an initial burst size is first transmitted to a data destination. After resetting a burst size according to a state of the data destination, another portion of the data corresponding to the reset burst size is second-transmitted to the data destination. If all the data are not transmitted through the first-transmission and the second-transmission, the second-transmission is repeated until all the data are transmitted. If all the data are transmitted through the first-transmission and the second-transmission, an interrupt signal is generated. Therefore, interrupt signals can be less generated, and thus the processor can access an external memory less frequently, thereby increasing system performance.
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