TUSER Fields - 9.1 English

XK_INDEX

log ₂ (maximum point size)

Yes - zero extended

Index of output data (unsigned 2's complement). This field is optional, and only included when XK_INDEX is enabled in the IDE.

BLK_EXP

8

Yes - zero extended

Block exponent (unsigned 2's complement): The amount of scaling applied (i.e., the number of bits by which the otherwise unscaled output value has been shifted down). A separate BLK_EXP field is included for each FFT channel that the core has.

Available only when block floating-point is used.

For more information on BLK_EXP, see Block Exponent .

OVFLO

1

No

Arithmetic overflow indicator (single bit, active-High): OVFLO is High during result unloading if any value in the data frame overflowed. The OVFLO signal is reset at the beginning of a new frame of data.

A separate OVFLO field is included for each FFT channel that the core has.

This port is optional and only available with scaled arithmetic or single precision floating-point I/O.

For more information on OVFLO , see Overflow .