Silicon Labs – First crystal-less USB-to-I2S audio bridge supports leading codecs (CP2114)Oct 18 2012 - Semiconductors [More Semiconductors Articles]
Introduced as the industry’s first, a new crystal-less USB-to-I2S audio bridge designed to support a wide range of codecs and digital-to-analog converters (DACs) used in USB-based audio applications, the CP2114 has been unveiled by Silicon Laboratories.
The devoice simplifies the process of transferring audio data from USB to I2S 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 I2S 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, says the company.
“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, 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.”
Carl Alberty, director of marketing for audio products, Cirrus Logic, said: “Cirrus Logic and Silicon Labs have a long history of working closely together in the audio market to deliver compelling platforms that help our customers reduce cost and speed time to market. Cirrus Logic is recognized for our broad portfolio of ultra-low power, high-performance codecs, so together with Silicon Labs’ CP2114 audio bridge, OEMs benefit from a turnkey USB audio platform that allows them to differentiate and excel in the competitive audio market.”
The CP2114 audio bridge uses the standard USB audio device class that is natively supported by most operating systems. USB audio class compatibility eliminates the need to develop and install custom USB software drivers. Host programming capabilities also enable developers to configure practically any external codec or DAC and perform in-field upgrades.
Mike Salas, vice president and general manager, Silicon Labs’ microcontroller products, said: “As a leading supplier of USB interface devices, we make it easy and cost-effective for our customers to implement USB connectivity in their embedded designs. Silicon Labs’ CP2114 device is the most developer-friendly USB-to-I²S audio bridge solution available, vastly simplifying USB audio peripheral design.”
Pricing and availability Samples and production quantities of the CP2114 USB-to-I²S audio bridge are available now in small-footprint 5mm x 5mm QFN packages optimized for space-constrained portable audio applications, says the company.More news from Lineagepower