FFT IP Core: User Guide

ID 683374
Date 11/06/2017
Public
Document Table of Contents

3.4.1.2. Changing the Direction on a Block-by-Block Basis

Assert or deassert inverse (appropriately) simultaneously with the application of the sink_sop pulse (concurrent with the first input data sample of the block).

When the FFT completes the transform of the input block, it asserts source_valid and outputs the complex transform domain data block in natural order. The FFT function asserts source_sop to indicate the first output sample.

Figure 13. FFT Streaming Data Flow Output Flow Control

After N data transfers, the FFT asserts source_eop to indicate the end of the output data block

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