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Altera_Forum
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17 years ago

Low Pass IIR filter using cyclone II FPGA

Hi everyone, I hava a task to implement low pass iir filter on cyclone II FPGA. The parameters of filter are the following: fp=5kHz; pass band frequency fs=8kHz; stop band frequency Fs=44k...
Altera_Forum's avatar
Altera_Forum
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17 years ago

altmult_accum is generating AHDL (*.tdf) rather than VHDL code. It has some useful features as saturation logic but no particular support for fixed point (fractional) numbers. In multiplication, fiexed point means nothing but apllying a shift factor to the result, so no particular support is needed, I think.