Question

How many address register are there for the 1D type DMA controller?

(a) 1

(b) 2

(c) 3

(d) 4

The question was asked in a national level competition.

Question is taken from DMA in portion Basic Peripherals of Embedded Systems

Answer 1

Right answer is (a) 1

For explanation: The 1D controller only have a single address register whereas 2D controller have two address register and 3D controller have three or more address register.