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Kaz,
Thanks!
Could you please recommend application notes or/and user manuals I could learn more how to increase CORDIC accuracy?
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I understand you are using Altera's cordic but can't find any link to its manual.
Xilinx has cordic ip and its manual at:
http://www.xilinx.com/support/documentation/ip_documentation/cordic/v6_0/pg105-cordic.pdf This should give you some idea about available settings.
there is also a cordic ip at opencores. It is not difficult to write your own targeting specific trigonometric function.
The following pdf provides a good basis:
http://www.ee.ic.ac.uk/pcheung/teaching/ee3_dsd/crdcsrvy.pdf
Honored Contributor
