Can anyone understand how Accumulator type DCO work? I just simply know DCO using accumulator with Adder N-bits and the number K, which is the number being added into adder at every clock in order to generate the desired frequency. Actually, i don't understand how it can operate? and what is the purpose of K for this implement?
it is quite easy --- it is just repeated addition....each time accumulator holds the result.. then its MSB gives square wave output and result given to LUT of sine gives corrosponding sine values
Added after 1 minutes:
Well the value of frequency output dependes on the numner K and clock frequency
i read through the pdf and found the Fig6 (Detailed block diagram of DDS) quite difficult to understand how Accummulator DCO work. There is one thing i'm still confusing:
How does the number K added in adder in every clock help to decrease the frequency by 2^N/K times?
wish i don't bother you so much. Anyway, thx for your reply.