> Hi all, thanks to your help, I have managed to solve the JTAG problem on my
> XTREME DSP Development Kit.
>
> However I had a response which attenuates all frequencies even though my
> design is low pass filter.. Anybody can help me with that because i checked
> through my design n it seems fine. It is a MAC based FIR 43 tap filter
> though.
>
>
Before you do anything else, try just passing your input signal to the
output and see how loud it is -- once you have that for a baseline, then
look at what's wrong with your filter.
--
Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
Posting from Google? See http://cfaj.freeshell.org/google/
Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" gives you just what it says.
See details at http://www.wescottdesign.com/actfes/actfes.html
Reply by Randy Yates●April 25, 20072007-04-25
"Bryan" <sfoo@xilinx.com> writes:
> Hi all, thanks to your help, I have managed to solve the JTAG problem on my
> XTREME DSP Development Kit.
>
> However I had a response which attenuates all frequencies even though my
> design is low pass filter.. Anybody can help me with that because i checked
> through my design n it seems fine. It is a MAC based FIR 43 tap filter
> though.
It's almost certainly a scaling problem. What are your coefficients and the
relevent wordlengths (input wordlength, coefficient wordlength, accumulator
wordlength, etc.)?
--
% Randy Yates % "Rollin' and riding and slippin' and
%% Fuquay-Varina, NC % sliding, it's magic."
%%% 919-577-9882 %
%%%% <yates@ieee.org> % 'Living' Thing', *A New World Record*, ELO
http://home.earthlink.net/~yatescr
Reply by Bryan●April 25, 20072007-04-25
Hi all, thanks to your help, I have managed to solve the JTAG problem on my
XTREME DSP Development Kit.
However I had a response which attenuates all frequencies even though my
design is low pass filter.. Anybody can help me with that because i checked
through my design n it seems fine. It is a MAC based FIR 43 tap filter
though.