[time-nuts] cordic
dk4xp at arcor.de
dk4xp at arcor.de
Tue Jun 21 15:24:09 UTC 2011
> So then, it's a trade between a big ROM LUT or a bunch o'gates for
> CORDIC. And for big N the bunch o'gates is probably going to be easier:
> 16 bit phase and wanting 16 bits out would be a 64kbit ROM (assuming you
> didn't do the usual thing of only needing 1/4 cycle)..
There is also the Sunderland technique that can reduce the table size
by a factor of 12 to 50 by splitting the table into 3 small ones and
combining them with simple arith.
Gerhard
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