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NXP claims 'first' USB digital audio headset solution

Posted: 23 Aug 2007 ?? ?Print Version ?Bookmark and Share

Keywords:USB 2.0? USB digital audio headset? NXP Nexperia?

NXP Semiconductors has launched Nexperia PNX0161, said to be the world's first USB-driven digital audio headset solution. The new device is expected to drive the standardization of USB 2.0 for portable consumer devices.

The new solution leverages USB 2.0 to shift the core audio streaming functions to the USB connector on the host devicealongside the existing battery charging and PC synchronization functions. This meets the market trend for ultrathin devices with a simplified design and a single standardized connection interface, enabling lesser BOM costs and quicker time-to-market.

"USB is fast emerging as a de facto connectivity interface in portable devices. NXP is leveraging its pole position to promote the adoption of USB technology with industry-first innovations, setting the stage for the future of USB applications for better connectivity and convenience on mobile phones, consumer electronics and PC peripherals," said Hans Fleurkens, product marketing manager, mobile and personal business unit, NXP. "Power consumption was the biggest challenge to the provision of digital audio on a headset and NXP's PNX0161 is the first to address this most efficiently, while also offering a choice of functionality through a programmable core."

Smart chip, docking station
Nexperia PNX0161 has a built-in DSP software, allowing OEMs to pre-set equalizers and maximize echo cancellation for improved sound quality. The programmable ARM7TDMI core is embedded with a DC/DC converter, which powers through the USB bus. Fully compliant with USB specifications, the solution offers plug-and-play operation with any USB host or On-The-Go (OTG) device and supports USB Audio and Human Interface Device (HID) classes.

Foreseeing the emerging standardization of USB 2.0 in mobile devices, NXP also expands its applications for a compelling GSM/MP3 docking station reference design for maximum functionality such as mobile phone and MP3 player power charging, FM-radio enabled speakers and Bluetooth connection. The single-chip PNX0161 is a small, ultralow-power, Hi-Speed USB 2.0-compliant solution that provides stereo playback and recording, as well as FM radio.

Available in a TFBGA88 package (7mm x 7mm), the PNX0161 requires as low as 10mA at Vbus for playback mode. Embedded power-management functionality, alongside intelligent power control, also contributes to this power-efficient solution. Especially designed to suppress noise coming from the host, PNX0161 is available in two versionsprogrammable flash or cost-effective ROMthat can be switched seamlessly during product ramp-ups.

NXP's digital USB audio solutions are available now.

NXP is participating at the 7th Embedded Systems Conference-Taiwan (ESC-Taiwan) and the 15th EDA & Test-Taiwan Conference & Exhibition (EDA&T-Taiwan on August 23-24 at the Taipei International Convention Center.

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