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Altera_Forum
Honored Contributor I
1,023 Views

The problem of NCO

Hi! 

I am new to the NCO. 

I meet some problem when I use the NCO,I want to use the NCO to generate a sinusoidal wave and a cosine wave,but the result is not right. 

 

is anyone can suggest me? 

 

thank you in advance!
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5 Replies
Altera_Forum
Honored Contributor I
30 Views

The value for the phase increment that you input on the phi vector is wrong. It should be the value indicated by the megawizard (85899346).

Altera_Forum
Honored Contributor I
30 Views

I get it,thank you!

Altera_Forum
Honored Contributor I
30 Views

which value is entered by user?(signed or unsigned or hex .....)

Altera_Forum
Honored Contributor I
30 Views

I'm guessing decimal, but it is probably written somewhere in the NCO datasheet.

Altera_Forum
Honored Contributor I
30 Views

thank you so much

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