PRODUCT BRIEF
SIX CHANNEL HD AUDIO CODEC
PREMIUM WLP 3/4 COMPLIANT
92HDW74C
DESCRIPTION
SOFTWARE SUPPORT
The 92HDW74C codec is a low power optimized, high fidel-
ity, 6-channel audio codec compatible with Intel’s High Def-
inition (HD) Audio Interface. The 92HDW74C codec
provides stereo 24-bit resolution with sample rates up to
192kHz. Dual SPDIF provides connectivity to consumer
electronic equipment that is WLP compliant. The
SKPI (Kernel Processing Interface)
Enables plug-ins that can operate globally on all audio
streams of the system
12 band fully parametric equalizer (SKPI plug-in)
Constant, system-level effects tuned to optimize a
particular platform can be combined with user-mode
“presets” tailored for specific acoustical environments
and applications
92HDW74C provides high quality, HD Audio capability to
multimedia notebook and desktop PC applications.
System-level effects automatically disabled when
external audio connections made
FEATURES
6 Channels (3 stereo DACs and 2 stereo ADCs) with
Dynamics Processing (SKPI plug-in)
24-bit resolution
Enables improved voice articulation
Supports 5.1 audio
Compressor/limiter allows higher average noise level
without resonances or damage to speakers.
Microsoft WLP 3/4 premium logo compliant, as
defined in WLP 3.09
IDT Vista APO wrapper
Enables multiple APOs to be used with the IDT Driver
Optimized and flexible power management with
pop/click mitigation
Microphone Beam Forming, Acoustic Echo
2 independent S/PDIF Output converters for WLP
Cancellation, and Noise Suppression
compliant HDMI/SPDIF support.
Dynamic Stream Switching
Support for 1.5V and 3.3V HDA signaling with
Improved multi-streaming user experience with less
support calls
runtime selection
Digital microphone input (mono, stereo, or quad
Dolby PC Entertainment Experience Logo Program
array)
Dolby Master Studio ™ (MS)
Dolby Home Theater™ (HT)
Dolby Sound Room™ (SR)
4 adjustable VREF Out pins for microphone bias
High performance analog mixer
Dolby Technologies
9 stereo analog ports with presence detect
capability
Dolby Headphone™, Dolby Virtual Speaker™
Dolby ProLogic II™, Dolby ProLogic IIx™
Dolby Digital Live™ (DDL)
Two-pin volume up/down control
Digital PC Beep to all outputs
Integrated headphone amps (3)
Sample rates up to 192kHz
Maxx Player™ from Waves
TM
TM
WOW and Tru Surround from SRS
+3.3 V, +4 V, +4.75 V and +5 V analog power supply
options
48-pin QFP RoHS package
IDT™ CONFIDENTIAL
1
92HDW74C
REV 0.5 07/07
SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP3/4 COMPLIANT