The USB host device throws a descriptor error (Error Code 43) or fails to enumerate the DAC entirely.
What are you pairing with the chip?
While not always available for every dongle, searching for "CX31993 driver" can occasionally yield specialized drivers that offer better power management. Cx31993 Datasheet Fix
Fix 2: Optimizing Impedance Matching on USB D+/D- Lines (Fixes Enumeration Failure) The USB host device throws a descriptor error