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Altera_Forum's avatar
Altera_Forum
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15 years ago

FIR Compiler output is zero

I have a design that is using a FIR Compiler generated FIR filter containing several coefficient sets. To be exact I had 5 sets loaded into the FIR filter. Everything was working fine. Then I tried...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I found the problem myself. Looks like the FIR compiler is scaling all the coefficient sets with the same factor. This means that you can't mix floating and fixed point coefficient sets. I just converted the fixed point set to floating point and things started working.