FFTC Block Exponent Value

Nithin Ramesan

I'm using the FFTC on a C66 board, and I've noticed that the value of the block exponent (using dynamic scaling) sometimes is 65535, which seems way too large to be right.

What does this value mean - is it an error code of some sort?

over 10 years ago

0 Anji Babu over 10 years ago

Intellectual 585 points

Hi Nithin
Block exponent depicts how many times the FFT/IFFT value is scaled using the FFT accelerator. You can compare the results by doing FFT in MATLAB. It won't be high as 65535. We also observed such high value when all zero input is given to the accelerator.

0 Raja over 10 years ago in reply to Anji Babu

TI__Guru* 81335 points

Hi Anji Babu,

Thank you for your support and contribution to e2e.

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FFTC Block Exponent Value