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Detail
Registered Method and apparatus for controlling direct memory access
- 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.