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Registered Method and apparatus for controlling direct memory access

직접 메모리 접근 제어 방법 및 장치
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Inventors
Hwang In Ki, Do Young Kim, Woo-Sug Jung
Application No.
11932718 (2007.10.31)
Publication No.
20080133793 (2008.06.05)
Registration No.
8037214 (2011.10.11)
Country
UNITED STATES
Project Code
06MT2400, Development of Multi-codec and Its Control Technology Providing Variable Bandwidth Scalability, Do Young Kim
Abstract
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.
KSP Keywords
Initial burst, Memory Access, System performance, direct memory access, external memory