Hi John,
w 30 02 00 was disabling the AVDD LDO power and when i used to select this configuration AVDD pin wasn't showing me the set voltage, so i selected w 30 02 01 for setting the 'AVDD LDO powered up' settings. Same configuration worked for me for both ADC and DAC.
Now my DAC is also up and running actually the problem was with gains of HPL and HPR, they were set to 0dB so i wasn't able to observe the signal using scope. i increased the gains and it started working fine. Thanks for your support TI Team.