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Altera_Forum
Honored Contributor
8 years agoProblem with FIR II core
Hello, I am trying to use 11 taps symmetrical FIR using the IP Catalog in Quartus 14.1 My data are in signed Q.15 format with sampling rate 288MHz. I get the data in packets of 4 samples (...
Altera_Forum
Honored Contributor
8 years ago --- Quote Start --- Can you please elaborate what does this mean in term of the IP Catalog FIR II parameters? What clock do you suggest i use for the FIR? (I have 4 x 16bit samples on each 72MHz tick) What "Clock Rate' and "Input Sample rate (MSPS)' should I specify in the FIR wizard? My FIR should be "Single Rate" with interpolation 1 and decimation 1, correct? Will my input and output avalon streaming path be 16 or 64 bits wide? I am sorry if my questions are pretty basic, the documentation is kind of confusing to me. --- Quote End --- option 1: clk = 72*4 sample rate = 72 you need to serialise your 4 streams from 72 domain to 72*4 domain serially and input to fir. The fir should be set to 4 channels and will show on the output the channel number. option 2 (if applicable) use one channel but 4 parallel inputs or 4 instants of fir (though with no sharing of resource) and pass your data as it is on 72 rate with filter clock set to either 72 or 72*4(to save resource) and you should then get enable as 1:4