My customer is trying to initiate an i2c read from adau1701.
Addr0==Addr1=0 => Write addr = 0x68, Read addr = 0x69.
Sequence looks like he indeed sends 0x69, however adaqu1701 doesn't send an ack (pulls SDA low on 9th clock)
Attached are read sequence & schematics.
Similar write sequence (sending 0x68) produces the required ack.