The CP2114 is a USB audio ⇔ I2S conversion IC. It is assumed that you will connect a DAC/CODEC to I2S and use it with USB audio equipment (USB speakers, USB headphones/headsets, POS terminals, VoIP phones, etc.).
The basic specs are as follows.

• USB audio ⇔ I2S conversion function
• USB HID ⇔ I2C conversion (for DAC/CODEC control)
• Volume/Mute control
• Supports a wide range of DAC/CODEC
• Supports USB Audio Class v.1.0
• PCM output
• Supports 48kHz, 16-bit stereo digital audio
• USB: Device function (full speed), USB HID class
• USB⇔UART conversion function
• GPIO extensions: 12. UART is also feasible
• Operating Voltage: 3.0-3.6V (Self-powered), 4.0-5.25V (Bus-powered)
• I/O voltage: 1.8V to VDD
• Package: QFN32 (5x5mm)

The USB driver uses the USBHID class driver that comes standard with Windows, so there is no need to install a driver.
The CP2114 ROM can store DAC/CODEC configuration data and automatically configure the DAC/CODEC at startup.