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The problem of NCO

Altera_Forum
Honored Contributor II
1,086 Views

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 II
93 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 II
93 Views

I get it,thank you!

Altera_Forum
Honored Contributor II
93 Views

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

Altera_Forum
Honored Contributor II
93 Views

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

Altera_Forum
Honored Contributor II
93 Views

thank you so much

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