Summary of Silicon Labs offers crystal-less USB-I2S bridge
Silicon Labs' CP2114 is a crystal-less USB-to-I²S audio bridge that transfers USB audio to I²S without code development, simplifying clock synchronization and reducing BOM and design complexity. It integrates USB 2.0 full-speed controller, transceiver, crystal-less oscillator, OTP ROM, UART, I²C, and I²S in a 5x5 mm package, requires no external memory when paired with a codec/DAC, and supports codecs/DACs from Wolfson, Cirrus Logic, and Texas Instruments. Evaluation kits with popular codecs/DACs are available to speed development for USB audio accessories and VoIP applications.
Parts used in the CP2114 USB-to-I2S audio bridge project:
- Silicon Labs CP2114 USB-to-I2S audio bridge IC
- Integrated USB 2.0 full-speed function controller (on CP2114)
- USB transceiver (on CP2114)
- Crystal-less oscillator (on CP2114)
- One-time programmable ROM (on CP2114)
- UART interface (on CP2114)
- I2C interface (on CP2114)
- I2S interface (on CP2114)
- External codec or DAC (e.g., Wolfson, Cirrus Logic, Texas Instruments)
- Evaluation kit PCB populated with codec/DAC (optional)
Silicon Labs’ 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. Available in a small-footprint, cost-effective 5 mm x 5 mm package, the CP2114 is ideal for space-constrained portable audio applications.
Features
- USB crystal-less operation: eliminates the need for external crystal and associated components, reducing BOM cost and design complexity
- Supports a wide range of codecs and audio DACs
- Small-footprint package
Applications
- USB speakers/headphones/headsets
- Point-of-sale terminals
- Navigation systems
- Music boxes
- VoIP phones
Silicon Laboratories has introduced a crystal-less USB-to-I2S audio bridge designed to support a range of codecs and digital-to-analogue converters (DACs) used in USB-based audio applications.
USB-to-I²S audio data transfer also requires sophisticated clock synchronization, which poses complex development challenges.
The CP2114 audio bridge integrates a USB 2.0 full-speed function controller, a USB transceiver, crystal-less oscillator, one-time programmable ROM, UART, IIC and I2S interface into a single chip.
The device also requires no external memory when combined with a codec or DAC.
The CP2114 audio bridge supports multiple mainstream DACs and codecs from Wolfson Microelectronics, Cirrus Logic and Texas Instruments, giving customers the flexibility to implement their own preferred audio chipset solution.
Silicon Labs offers evaluation kits pre-populated with these popular DAC and codec platforms to further speed design time.
For more read: Silicon Labs offers crystal-less USB-I2S bridge
- What is the CP2114?
The CP2114 is a crystal-less USB-to-I2S audio bridge IC from Silicon Labs that transfers USB audio to I2S without code development. - Does the CP2114 require an external crystal?
No, the CP2114 uses a crystal-less oscillator and eliminates the need for an external crystal. - What interfaces are integrated into the CP2114?
The CP2114 integrates a USB 2.0 full-speed controller, USB transceiver, crystal-less oscillator, one-time programmable ROM, UART, I2C, and I2S. - Can the CP2114 work without external memory?
Yes, the device requires no external memory when combined with a codec or DAC. - Which codecs and DACs does the CP2114 support?
It supports multiple mainstream DACs and codecs from Wolfson Microelectronics, Cirrus Logic, and Texas Instruments. - What package size is the CP2114 available in?
The CP2114 is available in a 5 mm x 5 mm small-footprint package. - What applications is the CP2114 suited for?
It is suited for USB speakers, headphones, headsets, point-of-sale terminals, navigation systems, music boxes, and VoIP phones. - Does Silicon Labs provide tools to speed development with the CP2114?
Yes, Silicon Labs offers evaluation kits pre-populated with popular DAC and codec platforms to speed design time.
