Search Symmetry
  1. Home
  2. Press Releases
  3. Turnkey Simplicity to Digital Audio Design

USB-to-I2S Bridge Chip Brings Turnkey Simplicity to Digital Audio Design - Silicon Labs PR


AUSTIN, TexasApril 19, 2017 /PRNewswire/ -- Silicon Labs (NASDAQ: SLAB) has introduced a fixed-function audio bridge device that provides a simple, turnkey solution for transferring digital audio data between the universal serial bus (USB) and integrated inter-IC sound (I2S) serial bus interfaces. The new CP2615 digital audio bridge simplifies USB-to-I2S connectivity and accelerates time to market for a wide range of power-sensitive, space-constrained USB audio applications based on the Android, Windows, Linux and Mac operating systems, including headphones, headsets, speakers, MP3 accessories, navigation systems and point-of-sale terminals.

See All Silicon Labs Solutions - Click here

While USB connectivity seems simple for consumers, USB audio design can be very challenging, and developers need a fast, painless way to add USB connectivity to their audio accessories. Silicon Labs' CP2615 digital audio bridge provides a drop-in USB-to-I2S connectivity solution that requires no USB audio knowledge or protocol expertise, enabling developers to focus on their end applications instead of firmware development. 

The single-chip CP2615 audio bridge is available in a compact 5 mm x 5 mm QFN-32 package, making it ideal for portable audio applications with limited printed circuit board (PCB) space. The feature-packed CP2615 device includes a USB 2.0 full-speed function controller, USB transceiver, on-chip oscillator, I2S audio interface, I2C control interface and embedded flash memory for storing device configurations. This high level of integration eliminates the need for external components, significantly reducing PCB size and BOM cost.

The CP2615 audio bridge provides a cost-effective solution for low-end and mid-market headphones requiring a 48 kHz sampling rate. The small-form-factor device is also ideal for USB dongles designed for consumers who own high-end headphones that use an analog jack for audio. Many new smartphone designs are eliminating the analog headphone jack, offering only one USB connector to support both charging and audio connectivity. As a result, consumers often buy simple, low-cost dongles that interface the 3.5 mm analog jack to a USB-C to Micro USB adapter, enabling them to continue to use their existing headphones.

Silicon Labs' popular Simplicity Studio development environment includes an easy-to-use, GUI-based Xpress Configurator tool that simplifies USB audio design. Using the Xpress Configurator, developers can configure and customize their digital audio applications in three easy steps: connect the CP2615 bridge device, configure the USB and audio parameters, and then program the device. The configurator tool also enables developers to take advantage of Silicon Labs' flexible factory programming options to speed time to market.

"Silicon Labs really knows the ins and outs of USB development, and we're passing along our many man-years of USB expertise to developers with plug-and-play USB connectivity solutions like our new CP2615 audio bridge chip," said Tom Pannell, Senior Marketing Director for IoT products at Silicon Labs. "If you are developing USB-based digital audio applications, you can save considerable time, effort and cost by using Silicon Labs' CP2615 device, Xpress Configurator tool and evaluation kit."

Silicon Labs is a leading provider of USB connectivity solutions, offering a broad and flexible USB portfolio including fixed-function devices and general-purpose 8-bit and 32-bit MCUs with on-chip USB controllers.

See All Silicon Labs Solutions - Click here

Pricing and Availability

Samples and production quantities of the CP2615 digital audio bridge device are available now. CP2615 product pricing begins at $2.51 (USD) in 10,000-unit quantities. The CP2615-EK evaluation kit is available now and priced at $59.00 (USD MSRP). For additional CP2615 product information and to order samples and evaluation kits, please visit

Silicon Labs

Silicon Labs (NASDAQ: SLAB) is a leading provider of silicon, software and solutions for a smarter, more connected world. Our award-winning technologies are shaping the future of the Internet of Things, Internet infrastructure, industrial automation, consumer and automotive markets. Our world-class engineering team creates products focused on performance, energy savings, connectivity and simplicity.

Cautionary Language

This press release may contain forward-looking statements based on Silicon Labs' current expectations. These forward-looking statements involve risks and uncertainties. A number of important factors could cause actual results to differ materially from those in the forward-looking statements. For a discussion of factors that could impact Silicon Labs' financial results and cause actual results to differ materially from those in the forward-looking statements, please refer to Silicon Labs' filings with the SEC. Silicon Labs disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Connect with Silicon Labs

Silicon Labs PR Contact: Dale Weisman +1-512-532-5871,

Follow Silicon Labs at, at, on Twitter at, on LinkedIn at and on Facebook at

Silicon Labs, Silicon Laboratories, the "S" symbol, the Silicon Laboratories logo and the Silicon Labs logo are trademarks of Silicon Laboratories Inc. All other product names noted herein may be trademarks of their respective holders.


Contact Us


About Symmetry Electronics Team

Established in 1998, Symmetry Electronics is a focused global distributor of wireless connectivity solutions, sensors, and audio-video technologies. Offering comprehensive design support and available-to-ship inventory, Symmetry is committed to helping engineers accelerate time to market, reduce costs, and offer modern solutions for their IoT designs. Acquired by Berkshire Hathaway company, TTI, Inc. in 2017, Symmetry Electronics is part of the Exponential Technology Group (XTG) – a supergroup of electronic component distributors and engineering services firms working together to advance the electronics industry. For more information, visit


Stay up to date with industry and supplier news!


See all tags