TI WiLink™8 Wi-Fi®/Bluetooth®/Bluetooth Low Energy audio multi-room cape reference design


Design files


The TI WiLink™ 8 WL1837MOD audio cape is a wireless multi-room audio reference design used with BeagleBone Black (featuring TI Sitara™ AM335x). The WiLink 8 device's WLAN capability to capture and register precise arrival time of the connected AP's beacon is used to achieve ultra-precise synchronization between multiple connected audio devices. The WiLink 8 module (WL1837MOD) offers integrated Wi-Fi®/Bluetooth® /Bluetooth Low Energy solution featuring 2.4-GHz MIMO and antenna diversity on 5-GHz band.  It offers best in class audio solution featuring multi-room, Airplay® receiver, full audio stack streaming, support for online music services and much more. This reference design will enable customers to design their own audio boards with Wi-Fi/Bluetooth/Bluetooth Low Energy connectivity from our WiLink 8 module (WL1837MOD) and evaluate audio multi-room software on it.

The BeagleBone Wi-Fi Audio Cape extends a standard Sitara processor-based BeagleBone Black with WiLink 8 Wi-Fi/Bluetooth/Bluetooth Low Energy connectivity and an audio subsystem. The cape and relevant SDK are available at an additional cost from StreamUnlimited.


  • Ultra-precise audio multi-room synchronization (< 20 μsecs) between multiple speakers/capes
  • SDK supports rich set of online music services, UPnP, airplay audio receiver, GStreamer and more
  • Wi-Fi dual-band support on 2.4-GHz band (featuring 2 x 2 MIMO) and antenna diversity on 5-GHz band
  • Wi-Fi/Bluetooth (A2DP)/Bluethooth Low Energy co-ex and multi-role AP/station support
  • Stereo ADC and DAC support
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRIM8.PDF (2773 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Arm-based processors

AM3358Sitara processor: Arm Cortex-A8, 3D graphics, PRU-ICSS, CAN

Data sheet: PDF | HTML
Audio ADCs

PCM180824-bit, 99-dB SNR, 96-kHz stereo ADC with single-ended inputs

Data sheet: PDF | HTML
Audio DACs

PCM5101106dB Stereo DAC with 2VRMS output and Integrated Audio PLL

Data sheet: PDF
Wi-Fi products

WL1801MODWiLink™ 8 single band Wi-Fi® module

Data sheet: PDF | HTML
Wi-Fi products

WL1805MODWiLink™ 8 single band, 2x2 MIMO Wi-Fi® module

Data sheet: PDF | HTML
Wi-Fi products

WL1807MODWiLink™ 8 industrial dual band combo, 2x2 MIMO Wi-Fi module

Data sheet: PDF | HTML
Wi-Fi products

WL1831MODWiLink™ 8 industrial Wi-Fi, Bluetooth & Bluetooth Smart (Low energy) module

Data sheet: PDF | HTML
Wi-Fi products

WL1835MODWiLink™ 8 single band combo 2x2 MIMO Wi-Fi®, Bluetooth® & Bluetooth Smart module

Data sheet: PDF | HTML
Wi-Fi products

WL1837MODWiLink™ 8 industrial dual band, 2x2 MIMO Wi-Fi®, Bluetooth® & Bluetooth Smart module

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide WiLink 8 Wi-Fi Bluetooth Smart Audio Multiroom Cape Reference Guide (Rev. A) PDF | HTML Jul. 29, 2021
More literature What you should know about wi-fi audio synchronization Feb. 10, 2016
More literature Never miss a beat with our multi-room audio solution Feb. 10, 2016
Application note Precise Time Synchronization Over WLAN (Rev. A) Dec. 18, 2015
White paper Wi-Fi® audio: capabilities and challenges Dec. 02, 2015
Application note WL18xx 5GHZ Antenna Diversity Jun. 29, 2015

Related design resources

Reference designs

TIDC-WL1837MODCOM8I 2.4 & 5 GHz Dual Band Wi-Fi® + Bluetooth® Antenna Design on WiLink™ 1837 Module

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