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STAC9251X3TAEyy

Description
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
File Size911KB,137 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
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STAC9251X3TAEyy Overview

TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES

DATA SHEET
TWO-CHANNEL HD AUDIO CODEC WITH MODEM
& DUAL DIGITAL MICROPHONE INTERFACES
DESCRIPTION
The STAC9250/9251 are high fidelity, 2-channel audio CODECs
compliant with the High Definition Audio (HD Audio) specification
defined by Intel. The STAC9250/9251 enables a two-chip audio
and modem implementation by integrating the “System Side”
functionality of Silicon Labs’ modem solution. The STAC9250/
9251 provides a direct interface to Silicon Labs’ “Line Side” inte-
grated circuit. This integration results in cost savings without sac-
rificing audio fidelity or modem functionality. The STAC9251 also
implements a direct interface to two digital microphones, support-
ing advanced beam forming applications and resulting in
increased quality of voice applications.
STAC9250/9251
Integrated modem functionality from Silicon Labs
1
supports reduced BOM costs
Interfaces directly to Line Side integrated circuit from
Silicon Labs
Supports two-chip audio plus modem functionality
Supports Software modem implementations from
Motorola and others compatible with the Silicon Labs
chipset
Supports Motherboard implementations eliminating MDC
card and connector costs
Reduced board space
Reduced external component count
FEATURES
High-integration HD Audio Product
2-channel PC Audio CODEC
Modem “System-side” functionality
1
Dual Digital Microphone interface(STAC9251)
Two-Channel DACs and ADCs with 24-bit sample
resolution
Integrated Headphone Amps
Stereo Analog Microphone
Supports Stereo Microphone
Microphone Boost 0, 10, 20, 30, 40dB
S/PDIF In and Out
Universal Jacks™ Functionality for jack retasking
Adjustable VREF Out
Digital PC Beep to all outputs
48-pin LQFP Environmental Package
Two-Channel High Definition Audio CODEC with
Modem and Dual Digital Microphone Interfaces
High performance
Σ∆
technology
Sample rates up to 192 KHz
100dB DAC SNR
1. Modem functionality can only be used with a “Line
Side” DAA integrated circuit, Si3080 or similar, available
from Silicon Labs (www.silabs.com).
IDT™
1
STAC9250/9251
V 1.1 102706
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES

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