D2‐92683
Intelligent Digital Amplifier and Sound Processor
Key Features
Advanced DAE‐3™ Digital Audio Engine™ IC Family
DAE‐3™ Pin Compatible and Function/Feature Compatible with the D2Audio™ DAE‐6™ Device Family
DAE‐3HT™ ‐ Identical DAE‐3 performance, in 72‐QFN package
Integrated DSP Digital Sound Processing
Customizable audio path sound processing
Fully configurable and routable audio signal paths and hardware function assignment
Fully Supported with Audio Canvas™ III Design Tool
Flexible Audio Input and Output Configurations
12 Independent PWM Engine Channels
4 Independent Asynchronous I
2
S Digital Inputs
Integrated high‐performance stereo ADC (DAE‐3 only)
S/PDIF™ Digital Audio Inputs supporting Linear IEC‐61958 PCM or Compressed IEC‐61937 Audio
S/PDIF Digital Audio PCM Output
Embedded 8‐Channel Sample Rate Converter
Real‐Time Amplifier Control and Monitoring
Supports Bridged, Half‐Bridged, and Bridge‐Tied Load (BTL) Topologies, Using Discrete or Integrated Power Stages
Complete Fault Protection with Automatic Recovery
D2Audio™ SoundSuite™ Enhancement and Virtualization
Enhanced Audio Processing Decoders And Virtualization
Dolby® Digital/AC3
Dolby® Pro Logic IIx
Dolby® Virtual Speaker
SRS TruSurround HD4™ , SRS WOW HD™, SRS TruVolume™
Description
The D2‐926xx family of the DAE‐3™ and DAE‐3HT™ Digital Audio Engine™ devices are complete System‐on Chip
(SoC) multi‐channel digital sound processors and Class‐D amplifier controllers.
The integrated DSP provides efficient and configurable audio signal path processing including equalization,
dynamic range compression, mixing, and filtering that is completely configurable via the Audio Canvas™ III high
level programming interface. The integrated PWM engine supports programmable and dynamic control of audio
output, enabling a variety of multi‐channel output configurations and output power capacity. Internal noise
shaping, an embedded asynchronous sample rate converter, dynamic level‐dependent timing, and high
resolution operation supports power stage audio performances with SNR >110dB and THD+N < 0.01%.
The D2‐926xx devices are provided in two package and feature configurations which include the 128‐pin DAE‐3,
and the 72‐pin DAE‐3HT. Both the DAE‐3 and DAE‐3HT provide identical performance and enable an extremely
flexible platform for feature rich and cost‐affordable quality audio solutions, which benefit from the addition of
Class‐D amplifiers and DSP audio processing.
The 12 integrated digital PWM controllers can be used in a variety of multi‐channel audio system configurations,
supporting powered as well as line outputs. Fully protected amplifier control provides efficient and clean Class‐D
power output support.
Applications
DTV and Blu‐ray Soundbar
DVD and Blu‐ray Home Theater Systems
Home Theater in a Box (HTiB)
Audio Video Receiver (AVR)
Multi‐Channel Multi‐Media (MM) Systems
Multi‐Room Distributed Audio (MRDA)
Powered Speaker Systems
Automotive Trunk/Amplified Solutions
Parameters
Input Channels
PWM Output Channels
Signal Flow
Supported Audio Inputs
D2‐92683
8
12
Configurable
4x I
2
S, 1x S/PDIF,
8x fault INT
D2‐92684
8
12
Configurable
4x I
2
S, 1x
S/PDIF, 8x
fault INT
12x PWM, 1x
I
2
S, 1x S/PDIF
Alternatives
D2‐74583
8
12
Configurable
D2‐71683
8
12
Configurable
Supported Audio Outputs
12x PWM, 1x I
2
S,
1x S/PDIF
D2Audio PWM
Engine, Graceful
Fault Recovery,
147 MHz DSP
4x I
2
S, 2x 4x I
2
S, 2x S/PDIF,
S/PDIF, HDA, HDA, ADC (opt),
ADC (opt), 8x
8x fault INT
fault INT
12x PWM, 4x
12x PWM, 4x
I
2
S, 1x S/PDIF
I
2
S, 1x S/PDIF
Features
D2Audio D2Audio PWM D2Audio PWM
PWM Engine, Engine, Graceful Engine, Graceful
Graceful Fault Fault Recovery, Fault Recovery,
Dolby, DTS®
Dolby, DTS®
Recovery,
Dolby Algorithms, 160 Algorithms, 147
Algorithm MHz DSP, 32k P‐ MHz DSP, 32k P‐
memory
Support, 147
memory
MHz DSP
Audio Canvas III Support
Yes
Yes
Yes
Yes
PCB Design
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