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How is the count register can be splitted?

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How is the count register can be splitted?

(a) 2

(b) 3

(c) 4

(d) 5

I got this question in final exam.

This question is from DMA-II topic in portion Basic Peripherals of Embedded Systems

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Correct choice is (a) 2

Easy explanation: In the 2D model of the DMA controller, in addition to the address stride there is a count register which can be split into two, in which one register is used to specify the count for the block and the second register is used to define the total number of blocks or the bytes to be transferred.

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