| 摘要 |
A direct memory access controller has a data register for transferring data from a source to a destination address. A pattern register is provided and a data comparator is coupled with the data register and the pattern register for comparing the content of the data register with the content of the pattern register. A control unit coupled with the comparator controls the data flow and stops a data transfer if the comparator detects a match of the data register and the pattern register.
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