Integrating Mixed-Signal Solutions Value AC'97 Stereo Codec

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Integrating Mixed-Signal Solutions Value AC'97 Stereo Codec

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STAC9700
Integrating Mixed-Signal Solutions
Value AC'97 Stereo Codec
DESCRIPTION
SigmaTel's STAC9700 general-purpose 18-bit stereo, full duplex, audio codec that built around analog component specification AC'97 (Audio Codec Component Specification rev. 1.03). STAC9700 incorporates SigmaTel's proprietary Sigma-Delta technology achieve excess 90dB line through greater than DACs, ADCs, mixer integrated with analog I/Os, which include three analog line-level stereo inputs, analog line-level mono inputs, stereo output, mono output channel. Also included SigmaTel's stereo enhancement (SS3D) increased speaker separation when using typical low-cost speakers. STAC9700 primary codec, used with STAC9721/23/44/45 4-channel STAC9708 secondary, multiple codec configurations. This configuration provide six-channel output, delivering AC-3 playback applications. STAC9700 communicates five-wire AC-Link interface with AC-Link capable controller advanced core logic chipset. Packaged AC'97 compliant 48-pin TQFP, STAC9700 placed motherboards, daughter boards, CNR, AMR, docking stations.
OVERVIEW
Cost, Stereo codec. primary codec, provide 4-channel stereo support when paired with STAC9721 STAC9744 6-channel stereo support with AC-3 playback applications when paired with STAC9708.
FEATURES High performance technology Energy saving power down modes 18-bit full duplex stereo ADC, DACs AC-Link protocol compliance Supports mixer bypass mode compatible with STAC9704/21/44 SigmaTel Surround (SS3D) Stereo
Enhancement
Five analog line-level inputs 48-pin TQFP through Mixer +3.3V operation
SPECIFICATIONS Mixer Bypass Mode Analog LINE_OUT SNR: Digital SNR: Digital SNR: Total Harmonic Distortion: 0.02% Crosstalk between Input Channels: Spurious Tone Rejection: ORDERING INFORMATION
Part Number STAC9700T Package 48-pin TQFP 1.4mm
Temp Range
Supply Range DVdd 3.3V 5.0V, AVdd 5.0V
2-9700-P1-2.0-1100
STAC9700
Value AC'97 Stereo Codec
STAC9700 BLOCK DIAGRAM
Power Management
stereo sources
mono sources Stereo Mono LINE_OUT
AC-Link
SYNC BIT_CLK SDATA_OUT SDATA_IN RESET#
Digital Interface
Registers 64x16 bits
DACs 48Kss
MIXER
Analog mixing Gain Control MONO_OUT
ADCs 48Kss
Boost Gain control
MIC1
ADDITIONAL SUPPORT
Additional product company information obtained going SigmaTel website
www.sigmatel.com
Copyright 2000 SigmaTel, Inc. rights reserved. contents this document protected copyright reproduced without express written consent SigmaTel, Inc. SigmaTel, SigmaTel logo, combinations thereof trademarks SigmaTel, Inc. Other product names used this publication identification purposes only trademarks registered trademarks their respective companies. contents this document provided connection with SigmaTel, Inc. products. SigmaTel, Inc. made best efforts ensure that information contained herein accurate reliable. However, SigmaTel, Inc. makes warranties, express implied, accuracy completeness contents this publication providing this publication IS". SigmaTel, Inc. reserves right make changes specifications product descriptions time without notice, discontinue make changes products time without notice. SigmaTel, Inc. does assume liability arising application product circuit, specifically disclaims liability, including without limitation special, consequential, incidential damages.
2-9700-P1-2.0-1100

Integrating Mixed-Signal Solutions Value AC'97 Stereo Codec

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