USB to I2S Digital Audio Bridge​

The CP2114 device is the industry’s first crystal-less USB-to-I2S audio bridge designed to support a wide range of codecs and DACs in USB-based audio applications. The CP2114 simplifies the process of transferring audio data from USB to I2S without any code development, speeding time to market for USB audio accessories such as USB speakers, USB headphones and USB music boxes, as well as VoIP systems.
The CP2114 includes a USB 2.0 full-speed function controller, USB transceiver, oscillator, one-time programmable read-only memory (ROM), I2S (audio) interface, I2C (control) interface and UART interface in a compact 5 x 5 mm QFN-32 package ideal for space-constrained portable audio applications. The one-time programmable ROM on the device may be used to customize both product information and external DAC configuration strings.


  • Enumerates to the host as a Standard USB Audio Device and HID Consumer Control supporting:
    • USB Digital Audio Out (Audio Playback Device)
    • USB Digital Audio In (Microphone/Recording Device)
    • HID Consumer Control handling standard volume and mute functionality
  • Pre-configured support for 3 commercial DACs
  • Tested for USB plug & play and audio quality on all major operating systems
  • UART interface using standard USB HID device class
  • 12 Configurable GPIO Pins with Alternate Functions



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Data Sheet (1)

CP2114 Single-Chip USB Audio to I2S Digital Audio Bridge
1.12/5/2014424 kB

Data Short (1)

CP2114 Data Short
9.24.201210/1/2012149 kB

User Guides (1)

CP2114-EK User's Guide
0.110/8/20121707 kB

Quick Start Guide (1)

CP2114 Quick-Start Guide
0.210/29/2012258 kB

Application Notes (3)

White Papers (5)

PCN (1)

Development Kits

Software Release Packages

The CP211x release package contains the supporting software and applications that support general usage and customization of the CP211x parts for multiple OS platforms. The packages include the following components:
  • Customization software and interface library (AN721)
  • Software, documentation, and example code for CP2110 parts
  • Software, documentation, and example code for CP2114 parts
Product Matrix
Part NumberOtherPackage TypePackage SizeEval KitDig I/O PinsInternal OscillatorCommunicationsEEPROMFIFO
CP2114VREGQFN325x5 mmCP2114EK
12YesUSB Audio to I2S Audio Bridge352512 B


    Product Matrix





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