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Silicon Labs USB-to-I2S Audio Bridge Chip Brings Plug-and-Play Simplicity To Audio Design

Silicon Laboratories Inc. (NASDAQ: SLAB), a leader in high-performance, analog-intensive, mixed-signal ICs, today introduced the industry’s first crystal-less USB-to-I 2S audio bridge designed to support a wide range of codecs and digital-to-analog converters (DACs) used in USB-based audio applications. The new CP2114 audio bridge chip simplifies the process of transferring audio data from USB to I 2S without time-consuming code development, speeding time to market for USB audio accessories such as speakers, headphones, music boxes, point-of-sale terminals, navigation systems and VoIP systems.

USB system development often involves significant expertise, design effort and cost to overcome implementation issues ranging from compatibility to poor performance. USB-to-I²S audio data transfer also requires sophisticated clock synchronization, which poses complex development challenges. To address these needs, Silicon Labs’ CP2114 audio bridge provides a highly-integrated, plug-and-play solution for streaming audio between USB and I²S.

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 I 2S interface into a single-chip solution. The device’s innovative crystal-less architecture eliminates the need for external clock crystals and associated components, reducing audio system BOM cost and design complexity. The CP2114 audio bridge also requires no external memory when combined with a codec or DAC, further minimizing system BOM cost.

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.

“Fast time to market and BOM cost reduction are critical requirements in today’s competitive audio market, and by collaborating with Silicon Labs, we are able to help our customers bring cost-effective USB audio solutions to market quickly,” said Eddie Sinnott, portfolio and strategy director at Wolfson Microelectronics. “Wolfson is a global leader in the supply of high-performance mixed-signal semiconductor devices and high-definition audio solutions to the consumer electronics market, and the combination of Wolfson multi-channel and stereo DAC products and Silicon Labs’ CP2114 audio bridge chip provides a best-in-class platform for an array of cost-sensitive consumer audio products.”

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