SigmaDSP to serial port output setting on ADAU1787

Hello,

I am trying to configure SigmaDSP output to serial audio port output in SigmaStudio. I got BCLK0 (12.288MHz) and FSYNC0(48kHz) output as expected, but do not see signal from SDATAO0.

In SigmaStudio schematic, full-scale tone of 16kHz is connected to SDSP_OUT channel 0. In Hardware Configuration tab, I configured the followings

1) in SPT_CTRL tab, SPT0_BCLK_SRC = MASTER_12288, SPT0_LRCLK_SRC=MASTER_48k, SPT0_OUT_ROUTE0 = SDSP0

2) in POWER_CTRL tab, STP0_OUT_EN=SPT_OUT_ON

3) in PIN_CTRL tab, SDATAO0_DRIVE = NORM (tried HIGH too), SDATAO0_SLEW = SLOW

4) SDSP0 is not assigned to other output such as FINT0_ROUTE

What else do I have to do to connect SDSP output to Serial audio data output.

Thank you,

ADAU1787

Integrated/Special Purpose A/D Converters

Audio CODECs