Sonos Audio System

Document created by Lauren Percy Employee on Oct 26, 2015Last modified by Adrian Puga Candelario on Jul 31, 2019
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Sonos Playbar connects via Wifi


Short Demo Description

The Sonos Wi-Fi Connect audio bridge allows wireless Ethernet distribution of digital music.

The audio bridge contains an MPC8314E Power QUICC II Pro processor running the Linux OS. This allows digital music files to be buffered in the Connect audio bridge avoiding any audio drop outs when the Wi-Fi connection is interrupted. Free over the air encrypted firmware updates are also part of the Sonos system. There is audio decode support for compressed MP3, iTunes Plus, WMA (including purchased Windows Media downloads), AAC (MPEG4), AAC+, Ogg Vorbis, Audible (format 4), Apple Lossless, FLAC (lossless) music files, as well as uncompressed WAV and AIFF files. Plus, native support for 44.1kHz sample rates. In addition, there is support for 48kHz, 32kHz, 24kHz, 22kHz, 16kHz, 11kHz, and 8kHz audio sample rates.


Value Propositions

* The MPC8314E running the Linux OS offers secure, reliable transfer of digital music content via wireless Ethernet using one of the two on-chip eTSECs triple speed Ethernet controllers (10/100 & 1000baseT) available.

* The integrated DDR2 SDRAM controller on the MPC8314E allows deep buffering of audio data during playback. Avoiding audio drop outs caused by a brief (a few seconds) loss of Wi-Fi connection.

* The Security Engine (V3.3) integrated onto the MPC8314E allows cryptographic operations (like SSL) to be offloaded from the main CPU. Creating a secure link for both audio playback and over the air firmware updates from Sonos.

* Dual PCIe interfaces on the MPC8314E allow for straightforward connection to a Wi-Fi module(s), allowing for example the Wi-Fi formats supported to be updated or the addition of encryption/decryption algorithms.


NXP Content:



Layerscape MPUs and QorIQ MPUs