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Which of the following of a generic DMA controller contain a base address register and an auto-incrementing counter?

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Which of the following of a generic DMA controller contain a base address register and an auto-incrementing counter?

(a) address bus

(b) data bus

(c) bus requester

(d) address generator

I have been asked this question in a national level competition.

My question comes from DMA in division Basic Peripherals of Embedded Systems

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Correct answer is (d) address generator

The explanation: The generic controller have several components associated with it for controlling the operation and one such is the address generator. It consists of the base address register and an auto-incrementing counter which increment the address after every transfer.

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