Compute Block ................................................................... 6-5
Data Memory ..................................................................... 6-6
Reset State ...................................................................... 6-6
Idle State ........................................................................ 6-7
Read State ....................................................................... 6-7
Processing State ............................................................... 6-7
Write State ...................................................................... 6-7
Small FFT N<=256 ........................................................ 6-8
Large FFT N>=256 ........................................................ 6-9
Operating Modes ................................................................... 6-11
Vertical FFT ................................................................. 6-12
Horizontal FFT ............................................................. 6-13
No Repeat Mode ............................................................... 6-14
Repeat Mode .................................................................... 6-14
Inverse FFT ...................................................................... 6-15
ADSP-214xx SHARC Processor Hardware Reference
www.BDTIC.com/ADI
Contents
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