STAC9758 Datasheet, PDF (1/119 Pages) Integrated Device Technology – HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS

DATASHEET
HIGH-PERFORMANCE 6-CHANNEL AC’97
2.3 CODEC WITH UNIVERSAL JACKS™
STAC9758/9759
OVERVIEW
DESCRIPTION
High performance, 6-channel, AC’97 2.3 CODECs with
high Signal-to-Noise ratio and low distortion.
FEATURES
• High performance Σ∆ technology
• 6-Channel AC’97 2.3 CODECs
• 20-bit full duplex stereo ADCs
• 20-bit full duplex DACs
• Headphone drive capability
• SPDIF_IN Support
• SPDIF_OUT Support, including 96 kHz
• ADAT^® Optical “Litepipe” Interface
Support
• Universal Jacks^TM Functionality for jack
interchangeability
• Internal Jack Sensing
• Crystal Elimination Circuit
• Front/Rear Stereo Microphone
• 96 kHz DAC Playback support
• Up to 5 General Purpose I/Os
• Digital and Analog PC BEEP
• AC’97 2.3 Paging Registers and Analog Plug and
Play Capability
• Energy saving dynamic power modes
• >90 dB SNR and >-90dBV THD+N
• Adjustable VREF_OUT Control
• Pin compatible with 2-Channel CODECs
• Independent sample rates for ADC & DACs
• +3.3 V & +5 V analog power supply options
IDT's STAC9758/9759 are general purpose 20-bit, full
duplex, 6-Channel audio CODECs conforming to the ana-
log component specification of AC '97 (Audio Codec 97
Component Specification Rev. 2.3). The STAC9758/9759
incorporates IDT's proprietary Σ∆ technology to achieve a
DAC SNR in excess of 90dB. With IDT’s headphone drive
capability, headphones can be driven without an external
amplifier. The STAC9758/9759 communicates via the five
AC-Link to any digital component of AC '97, providing flexi-
bility in the audio system design. Packaged in an AC '97
compliant 48-pin TQFP, the STAC9758/9759 can be
placed on the motherboard, daughter boards, PCI, AMR,
CNR, MDC or ACR cards.
Supported ADC and DAC audio sample rates include
96kHz, 48kHz, 44.1kHz, 32kHz, 22.05kHz, 16kHz,
11.025kHz, and 8 kHz; additional rates are supported in
the STAC9758/9759 soft audio drivers. All ADCs and
DACs operate at 20-bit resolution. SPDIF_OUT supported
sample rates include 96kHz, 48kHz, 44.1kHz and
32kHz. SPDIF_IN supports 48kHz and 44.1kHz.
The STAC9758/9759 includes internal jack sensing using
proprietary IDT current and impedance-sensing tech-
niques. The impedance load on any of the inputs or outputs
can be detected. The STAC9758/9759 also supports Uni-
versal Jacks^TM functionality for jack interchangeability.
The GPIOs on the STAC9758/9759 remain available for
advanced configurations. The STAC9758/9759 can sup-
port up to 5 GPIOs.
The STAC9758/9759 is designed primarily to support
6-channel audio. Additionally, the STAC9758/9759 pro-
vides for a stereo enhancement feature, IDT Surround 3D
(SS3D).
The STAC9758/9759 also supports the ADAT^® Optical
“Litepipe” Interface, which provides an 8 channel output for
professional and consumer audio applications.
The STAC9758/9759 can be SoundBlaster^® and Windows
Sound System^® compatible when used with IDT’s WDM
driver for Windows 98/2K/ME/XP or with Intel/Microsoft
driver included with Windows 2K/ME/XP.
SoundBlaster is a registered trademark of Creative Labs.
Windows is a registered trademark of Microsoft Corporation.
ADAT Optical is a registered trademark of Alesis Corporation.
IDT™
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HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
STAC9758/9759
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