Scaling - 2023.2 English

Vitis Libraries

Release Date
2023-12-20
Version
2023.2 English

When configured as a DDS (TP_MIXER_MODE=0) the output of the DDS is intended to be the components of a unit vector. For TT_DATA = cfloat, this means that the outputs will be in the range -1.0 to +1.0. For TT_DATA = cint16 and TT_DATA = cint32 the output is scaled by 2 to the power 15 and 31 respectively such that the binary point follows the most significant bit of the output. Therefore, if the DDS output is used to multiply/mix, you must account for this bit shift.