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Altera_Forum
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11 years ago

FIR and CIC MegaCores Altogether

Hi, I have instantiated FIR II MegaCore as a Pulse-Shaping and upsampling by 8 filter, now I want to use CIC MegaCore after FIR to interpolate the signal... I didn't use Back Pressure feature in...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

My original data rate is 176.4 KHz, and I want to raise to to 100 MHz so that I can multiply it with the carrier signal.

that means an interpolation factor of 566!!! Isn't that too much?! I wish I could do it in a single stage but I thought it would be

a waste of resources. If you recommend it I will do it :)

EDIT: I've just checked the FIR compiler... it doesn't have such a factor. Maximum is 128.