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Altera_Forum's avatar
Altera_Forum
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14 years ago

sine angle conversion

sir/mam can you plz help me to find sine or cosine angle in decimal range. like sine 30 in the range of 0 to 3954 etc.what is the formula to convert this?
Altera_Forum's avatar
Altera_Forum
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14 years ago

If you have code for NCO then I assume you mean you have code for phase accummulator. Then all you have to do is portmap your accummulator result to theta_in and get sin/cos data from LUT.

If your accummulator width is wider than LUT address bits then discard some LSBs of accumulator.