STAC9766 Datasheet, PDF (41/97 Pages) Integrated Device Technology – TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING

STAC9766/9767
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
PC AUDIO
6. STAC9766/9767 MIXER
6.1. Mixer Description
The STAC9766/9767 includes an analog mixer for maximum flexibility. The analog 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. The analog mixer also includes several extensions of the AC’97 specification
to support “all analog record” capability as well as “POP BYPASS” mode for all digital playback. The
analog sources include:
• System Audio : Digital PCM input and output for business, games & multimedia
• CD/DVD: Analog CD/DVD-ROM audio with internal connections to CODEC mixer
• Stereo or 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
• Line in: External analog line level source from consumer audio, video camera, etc.
Source
PC_BEEP
PHONE
MIC1
MIC2
LINE_IN
CD
VIDEO
AUX
PCM out
Function
PC BEEP pass through to LINE_OUT
MONO input
Desktop microphone
Second microphone
External audio source
Audio from CD-ROM
Audio from TV tuner or video camera
Upgrade synth or other external source
Digital audio output from AC'97 Controller
Connection
From PC_BEEP output
From telephony subsystem
From stereo or mono mic jack
From stereo or second mono mic jack
From line-in jack
Cable from CD-ROM
Cable from TV or VidCap card
Internal connector
AC-Link
Destination
HP_OUT
LINE_OUT
MONO_OUT
PCM in
SPDIF
Function
Stereo mix of all sources
Stereo mix of all sources
Mic or MONO Analog mixer output
Digital data from the CODEC to the AC'97 Controller
SPDIF digital audio output
Connection
To headphone out jack
To output jack
To telephony subsystem
AC-Link
To SPDIF output connector
IDT™
41
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
STAC9766/9767
V 7.4 12/06