In the AD1939_I2S_Sampled_Based_Talkthru BSP example project, output L and R channels are reversed. Because, In AD1939 ADC and DAC configuration, LRCLK polarity is set as zero (i.e. Left low). Whereas In ADSP-21469 SPORT configuration, LRCLK polarity set as zero (i.e. Right channel first). This causes the channels swapping. So, we need to set the LRCLK polarity as one (i.e. Left channel first) in SPORT's configuration.