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Altera_Forum's avatar
Altera_Forum
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16 years ago

Interpolation with CIC Filter

Hello! I want to interpolate a 13.5 kHz sinus signal, which is generated with a NCO at a sampling rate of 54 Khz. I want a sampling of 5,4 MHz. So i tried to use a CIC-Filter with rate = 10...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Ok. I was thinking in your way too. Because the differentiators has to be clocked with the lower sample rate and the integrators has to be clocked with the higher rate. But I thought the CIC-Filter would do this "clocking" automatically.

The CIC-Filter generated by the MegaWizard has only one clock-input.....how should I solve the problem??...