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STAC9704 Datasheet(PDF) 22 Page - Hynix Semiconductor

Part # STAC9704
Description  Multimedia Audio Codec for AC97
PDF  49 Pages
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Manufacturer  HYNIX [Hynix Semiconductor]
Direct Link  http://www.skhynix.com/kor/main.do
Logo HYNIX - Hynix Semiconductor

STAC9704 Datasheet(HTML) 22 Page - Hynix Semiconductor

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SigmaTel, Inc.
STAC9704/7
22
10/02/98
4. STAC9704/7 MIXER
The STAC9704/7 mixer is designed to the AC’97 specification to manage the playback and record of all digital
and analog audio sources in the PC environment. These include:
•
System Audio: digital PCM input and output for business, games and multimedia
•
CD/DVD: analog CD/DVD-ROM Redbook audio with internal connections to Codec mixer
•
Mono microphone: choice of desktop mic, with programmable boost and gain
•
Speakerphone: use of system mic and speakers for telephone, DSVD, and video conferencing
•
Video: TV tuner or video capture card with internal connections to Codec mixer
•
AUX/synth: analog FM or wavetable synthesizer, or other internal source
Figure 11. STAC9704/7 Mixer Functional Diagram
vol
mute
PCM out
D/A
Phone
LINE IN
LINE_OUT
CD
Video
AUX
Analog Audio
Sources
MONO_OUT
PCM IN
20dB
Master
Volume
Mono
Volume
A/D
A/D
Master
Input
Volume
Σ
Σ
vol
vol
vol
vol
vol
vol
vol
mute
mute
mute
mute
mute
mute
mute
KEY
MonoAnalog
StereoAnalog
Digital
LNLVL_OUT
LNLVL
Volume
3D
3D
-6dB
-6dB
PC_Beep
MIC1
MIC2
Σ



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