The following diagram shows the graph view of the AI Engine array for this design. The design contains 32 instances of each 1024-pt “row” FFTs in the front-end and “column” FFTs in the back-end. Each 1024-pt transform implements using five tiles in each case. An extra tile implements “twiddle rotation” for each FFT instance in the front-end. Consequently, the diagram shows 32 instances of a “6-tile subgraph” that implement the front-end transforms and twiddle rotations, along with 32 instances of a “5-tile subgraph” for the back-end compute processing.