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Type: Answers

Area: Intellectual Property


IP Product: FFT/IFFT

Do I need to drive fftpts_in of the FFT IP core, even if I'm not changing the block size?

Description

You may receive source errors (missing SOP, missing EOP) when attempting to process data through the Altera® FFT IP Core when fftpts_in not being driven or being driven incorrectly.

Workaround/Fix

fftpts_in must be driven, even if one is not dynamically changing the block size. For a fixed block size implementation, it should be driven to match the transform length selected in the parameter editor.