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Altera_Forum's avatar
Altera_Forum
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15 years ago

Cosine and Sine lookup table in vhdl

Hi i'm new to vhdl and I need a cosine and sine lookup table file in vhdl file already DONE.. because I don't have much time.. please help! thanks.
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hm, I have used the "kaz" code, converting DAC_input <= std_logic_vector(sin_data), basically converting signed to SLV and increasing the theta from 0 to 4095. The output is like this: http://i.imgur.com/G4l1d.jpg

Where did I miss the MSB inversion?