FFT Hardware Implementation

[qmriso]

I am trying to Implement 8 pt Radix 2 Butterfly DIF FFT on an ASIC

I have just finished preparing the logic how to do it .... I just wanted to know which are the best Adders and Multipliers that I could use in my butterfly ???

Adders and Multipliers should be more efficient - is the citeria
Thanksa lot!

 

[rsrinivas]

if u r doing asic just write
assign c = a*b;
and give directive to the DC.
it will use the multiplier and adder u specified.
or if u use design ware foundation libraries and optimizing for speed booth recoded mul's and prefix adders are synthesized.

 

[novise]

As far as adders go , if u simply put a plus and let RTL Compiler , it will put an efficient adder as RC is pretty good in carry save optimizations