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Patrik78's avatar
Patrik78
Icon for New Contributor rankNew Contributor
2 years ago

FIR II Coefficient Reload Problems

Hello, I am using Quartus version 18.1 and I have a FIR filter in a Nios II QSYS system (created with FIR II). the filter works as expected with the preconfigured coefficients in QSYS. The issue ...
Kshitij_Intel's avatar
Kshitij_Intel
Icon for Frequent Contributor rankFrequent Contributor
2 years ago

Hi,


You must toggle the coeff_in_areset signal before reloading the coefficient with new data. The new coefficient data is read out after coefficient reloading to verify whether the coefficient reloading process is successful. When the coefficient reloading ends by de-asserting the coeff_in_we, the input data is inserted immediately to the filter that is reloaded with the new coefficients.


Thank you

Kshitij Goel