DARR83 Digital Wireless Audio ProcessorIndustry’s First Wireless Audio Processor with Tri-Band Support and an Embedded Multi-Channel USB 2.0 Audio Controller

SummaryThe DARR83 audio baseband processor is at the heart of Microchip’s next generation of wireless audio solutions. Multiple innovative technologies, including Microchip’s Wireless DNA Detect ‘n Avoid architecture, deliver excellent co-existence with other wireless products such as Wi-Fi® and Bluetooth® without impacting the robust wireless audio link. This tri-band technology yields excellent wireless performance, even when the DARR83 is co-located with Wi-Fi 802.11 a/b/g/n technology.

The DARR83 offers a multi-point to multi-point HD wireless audio platform for consumer electronics including home entertainment, PC and gaming console/headset applications, among others. A DWAM83-TB reference design is available and can easily be applied to the afore-mentioned applications.* The DARR83 supports both SD and HD audio links, offering a wide range of sample rates (from 24 to 96 kHz) and resolutions (from 16 to 24 bits). The integrated USB 2.0 PHY and controller offer a bi-directional, multi-stream audio interface. This feature enables the DARR83 to act as a USB audio device with the capability to support up to eight mono audio channels. The DARR83 integrates many automated functions such as seamless RF band switching, RF channel selection, transmitter/receiver association and low-power audio snooze mode. This robust feature set facilitates easy product integration and provides end users with a simple, reliable and intuitive wireless audio solution.

Target Applications ■ Wireless rear speakers, soundbars and subwoofers ■ Wireless home cinema and audio networks ■ Wireless headphones, gaming headsets

and microphones ■ MP3/PMP wireless docking stations ■ Wireless USB audio dongles ■ Wireless video and webcams

Highlights ■ Single, dual and tri-band support (2.4/5.2/5.8 GHz) ■ Seamless RF band and channel switching ■ In-room range of up to 50 meters ■ Multi-point to multi-point transmission, allowing multiple

receivers to listen to the same audio stream ■ Up to four uncompressed stereo audio channels ■ Bi-directional audio support, allowing simultaneous

Rx and Tx on a single device ■ Integrated USB controller offering wireless

multi-channel audio ■ Video data transfer of up to 10 Mbps ■ Integrated 8052 MCU with 45 KB code RAM and

8 KB data RAM

Key Features Benefits

Tri-band support (2.4/5.2/5.8GHz) Excellent co-location with Wi-Fi 802.11 a/b/g/n

Wireless DNA technology Reduces interference commonly associated with other RF devices such as Wi-Fi®, Bluetooth®, microwave ovens and DECT phones

Bi-directional audio Allows DARR83 to simultaneously transmit and receive audio streams

Low latency audio transfer; default at 18 ms Complies with Dolby® certification requirements for less than 20 ms

Uncompressed bit-true audio transmissions Zero impact on audio quality under normal wireless conditions

Integrated USB 2.0 PHY and controller Enabling cost-effective, PC-centric wireless audio and video applications

*Other reference designs are available including the USB83 USB audio dongle, DWHP83 headphone module and DWPCIE83 PCIe card.

Information subject to change. The Microchip name and logo, the Microchip logo are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. All other trademarks mentioned herein are property of their respective companies. © 2013, Microchip Technology Incorporated. All Rights Reserved. Printed in the U.S.A. 12/13 DS00001614A

Visit our web site for additional product information and to locate your local sales office.

Microchip Technology Inc. • 2355 W. Chandler Blvd. • Chandler, AZ 85224-6199

www.microchip.com/wirelessaudio

DARR83 Block Diagram

DARR83 Application Example

SPDIF

SPDIF

I²S

I²S

I²S

I²S

SPIBulk

Pipe/StreamMultiplexer

Volume andAudio

Integrity

SRC

Isochronous EP

Bulk EP

Control EP

PHY Controller

USB

Tx/Rx Audio Buffer

ControlData

MessagingCo-existence

Interface

Framer

Timer

SPI

Data RAMTimers 0-3

8052 MCU

MCU

Tx/Rx UART

Master I²C™

Slave I²C

Control I/O

PMU

Clock Generator

GPIOs

Auxiliary ADC

RC Oscillator

Crystal Oscillator

Voltage Regulator

TX I/QShaper

Peripherals and Clocks

Boot ROM

Code RAM

Parallel Internal Bus

Audio Data Link PHY

Radio Control

DigitalBaseband

RX I/QADC

USBDARR83Wireless

Audio Processor

802.11 a/b/gRadio

I²C™

EEPROM

802.11 a/b/gRadio

EEPROM

I²C

I²S

Audio RxAudio Tx

AudioDAC

DARR83Wireless

Audio Processor