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Altera_Forum
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14 years ago

How can i use CORDIC ?

Hello i am trying to use the cordic core { http://opencores.org/project,cordic } with no sucess. Say i have a complex number of 4 + 5i. I have inserted 1000 as the Xi input and 1001 as the Yi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

with the fixed point library, you dont need to worry about scaling factors: 


constant UM_TERCO : sfixed := to_sfixed(0.3333, N-1, -M); --N integer bits, M fractional
signal temp_fasor_real8 : sfixed(A downto 0)
signal Va_real : signed(N+A-1 downto -M);
Va_real <= temp_fasor_real8 * UM_TERCO;