The Nexperia PNX0161 USB-driven digital audio headset solution shifts the core audio streaming functions to the USB connector on the host device, alongside the existing battery charging and PC synchronization functions. The chip has an ARM7TDMI core and built-in DSP software, allowing OEMs to preset equalizers and maximize echo cancellation.

The IC features a 256-Kbyte NOR flash, 32 Kbytes of SRAM, and 32 Kbytes of boot ROM. It has a dc/dc converter that is powered through the USB bus, is fully compliant with 12-Mbit/s USB 2.0 specifications, and provides plug-and-play operation with any USB host or On-The-Go device. The 7 x 7-mm TFBGA88-packaged chip requires only 10 mA for playback mode.