Integrating Mixed-Signal Solutions Channel AC'97 Codecs with Digital S

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Integrating Mixed-Signal Solutions Channel AC'97 Codecs with Digital S

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STAC9756/57
Integrating Mixed-Signal Solutions Channel AC'97 Codecs with Digital SPDIF Output
Stereo AC'97 codecs with inputs well SPDIF outputs.
DESCRIPTION
SigmaTel's STAC9756/57 general purpose 18-bit, full duplex, audio codecs conforming analog component specification AC'97. FEATURES STAC9756/57 incorporate SigmaTel's proprietary technology achieve excess High performance technology DACs, ADCs, mixer inte 18-bit full duplex stereo ADC, DACs grated with analog I/Os, which include four analog Independent sample rates DACs line-level stereo inputs, analog line-level mono inputs, stereo outputs, mono 5-Wire AC-Link protocol compliance output channel. STAC9756/57 include digital ZV-Port digital input input output capability support modern systems. There input ZV-Port audio, digital SPDIF output dedicated output output that supports Digital-ready status either SPDIF format. STAC9756/57 microphone boost capability standard 2-channel stereo codec. With SigmaTel's stereo enhancement (SS3D) LINE +3.3V (STAC9757) (STAC9756) OUT, user gains richer livelier listening analog power supply options experience. STAC9756/57 used compatible with STAC9700/21/44 secondary codec, with STAC9700/21/44/56/ SigmaTel Surround (SS3D) Stereo primary, multiple codec configuraEnhancement tion conforming AC'97 Rev. specification. This configuration provide true Energy saving dynamic power modes channel playback with support applica Multi-Codec option (Intel AC'97 2.1) tions. STAC9756/57 communicates analog line-level inputs five-wire AC-Link digital component AC'97 providing flexibility audio system LINE-LINE design. microphone input mono mixer through Mixer output recorded simultaneously, thus allowing all-digital output support digital-ready initiative. Packaged AC'97 compliant 48-pin TQFP, STAC9756/57 placed motherboard, daughter boards, PCI, AMR, CNR, cards.
ORDERING INFORMATION
Part Number STAC9756T STAC9757T Package 48-pin TQFP 1.4mm 48-pin TQFP 1.4mm Temp Range +70° +70° Supply Range DVdd 3.3V, AVdd 5.0V DVdd 3.3V, AVdd 3.3V
2-9756-P1-3.0-0201
STAC9756/57
Channel AC'97 Codecs with Digital SPDIF Output
STAC9756/57 BLOCK DIAGRAM
Power Management stereo sources mono sources mono stereo
AC-link
SYNC BIT_CLK SDATA_OUT SDATA_IN RESET#
DACs
LNLVL_OUT LINE_OUT
Digital Interface
Registers 64x16 bits
MIXER
Analog mixing Gain Control
MONO_OUT
Multi-Codec
ADCs
Boost 0/20
MIC1 MIC2
Variable Sample Rate 18-Bit DACs ADCs
MIXER
SPDIF I2S_OUT2 I2S_OUT1 Digital mixing Gain Control
Z_DATA (I2S_INPUT)
SPECIFICATIONS Analog LINE_OUT SNR: Digital SNR: Digital SNR: Full-scale Total Harmonic Distortion: 0.02% Crosstalk between Input Channels: Spurious Tone Rejection: RELATED MATERIALS Data Sheet Reference Designs CNR, applications Audio Precision Performance Plots ADDITIONAL SUPPORT
Additional product company information obtained going SigmaTel website
www.sigmatel.com
Copyright 2001 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.
2-9756-P1-3.0-0201

Integrating Mixed-Signal Solutions Channel AC'97 Codecs with Digital S

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