Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
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

I am not fans of CIC IP cores but judging by your last work there is possibilty of error. You are supposed to drive the input data in once every 100 clks of output clk. By connecting slow clk to valid in you will violate that when clk is high since many fast clks will be enabled.