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TMCNet: Conexant launches Dolby headphone decoder integrated circuit

[January 09, 2013]

Conexant launches Dolby headphone decoder integrated circuit

Jan 09, 2013 (Datamonitor via COMTEX) -- Conexant Systems Inc., a provider of semiconductor solutions for imaging, audio, embedded modem, and video surveillance applications, has launched the CX20873, a Dolby headphone decoder integrated circuit, or IC, featuring Dolby Digital Plus, or E-AC-3, decoder, Dolby Pro Logic II, and Dolby Headphone in addition to Conexant's proprietary advanced voice processing algorithms.


The introduction of the CX20873 Dolby headphone decoder IC complements Conexant's existing portfolio and provides customers with turnkey solutions for entertainment, game headsets and audio peripherals. This integrated chip includes high-speed USB2.0, I2S, tri-color PWM LED drivers, SPDIF and more. The feature set reduces external BOM costs and provides flexibility to customers in designing their audio products. Additionally, Conexant's reference design kit reduces development time.

Combined with Dolby Headphone signal processing technology, the CX20873 delivers up to 7.1-channel surround sound over standard headphones for spacious headphone audio experience. The solution is ideal for applications including cross-platform game console headsets, USB headsets, headphones, USB audio adapters, and other game accessories.

Dolby Headphone technology delivers up to 7.1-channel surround sound over any standard headphones. The CX20873 allows users to combine Dolby Headphone technology with either Pro Logic IIx or Pro Logic IIz processing, while simultaneously decoding multi-channel encoded streams received from an external source over SPDIF or a USB 2.0 interface.

Conexant's proprietary voice processing algorithms deliver audio and voice quality and meet industry standards such as TIA-920 and Skype hardware specifications. The algorithms include acoustic echo cancellation, microphone noise reduction, parametric equalizer, and dynamic range compression.

The CX20873 features; high-speed USB2.0 DeviceS/PDIF Transmitter and S/PDIF Receiver; full duplex stereo I2S/PCM; serial peripheral interface (SPI) master and slave; inter-integrated circuit (I2C) master and slave; 2 sets of tri-color PWM LED drivers, fully configurable; quad digital microphone PDM interface; 6 dedicated general-purpose I/Os (GPIOs); and on-chip programmable PLLs.

"In addition to Dolby Headphone, the CX20873 brings PC and console gamers benefits from Conexant's proprietary voice and audio processing algorithms such as acoustic echo canceller, ambient noise suppression and microphone auto gain control to deliver a crystal clear voice - without carrying ambient noise to other gamers within the gamescape," said Saleel Awsare, Conexant vice president and general manager.

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