: Ensure your device isn't in an aggressive "Battery Saver" mode, which can throttle the USB port's power and cause audio dropouts.
If you are looking for specific data points for your project or setup, here are the validated specs: : 384 kHz / 32-bit. Signal-to-Noise Ratio (SNR) : -128dB. Output Voltage : 1V to 2 Vrms (varies by implementation). Power Output : ~65mW at 32Ω.
Pin 1: HP_OUT_L Pin 2: HP_OUT_R Pin 3: AGND Pin 4: VDD (3.3V) Pin 5: USB_DP Pin 6: USB_DN Pin 7: DGND Pin 8: VDDIO (1.8V) cx31993 datasheet fix better
Since the manufacturer did not release a "fixed" datasheet, the open-source community (specifically developers working on the Linux Kernel sound/pci/hda tree) had to "fix" the implementation by guessing and testing.
If the device stops working mid-song or isn't recognized by your phone: AUDIOCULAR Conexant CX Pro CX31993 USB-C DAC & Amp : Ensure your device isn't in an aggressive
If you are looking for the official PDF datasheet to build a driver or design a circuit:
Without a datasheet, it feels risky. But after "fixing" the driver issues: Output Voltage : 1V to 2 Vrms (varies by implementation)
For years, the Cx31993 was "supported" by a generic driver that didn't handle its specific quirks well.