STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
IDT™
43 STAC9752/9753
REV 3.3 1206
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
6. STAC9752/9753 MIXER
The STAC9752/9753 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
• Mono microphone: choice of desktop microphone, with programmable boost and gain
• Speakerphone: use of system microphone and speakers for telephone, DSVD, and video con-
ferencing
• 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 Function Connection
PC_BEEP PC BEEP pass through to LINE_OUT from PC_BEEP output
PHONE MONO input from telephony subsystem
MIC1 desktop microphone from microphone jack
MIC2 second microphone from second microphone jack
LINE_IN external audio source from line-in jack
CD audio from CD-ROM cable from CD-ROM
VIDEO audio from TV tuner or video camera cable from TV or VidCap card
AUX upgrade synth or other external source internal connector
PCM_OUT digital audio output from AC'97 Controller AC-Link
Destination Function Connection
HP_OUT stereo mix of all sources To headphone out jack
LINE_OUT stereo mix of all sources To output jack
MONO_OUT microphone or MONO Analog mixer output to telephony subsystem
PCM_IN digital data from the CODEC to the AC'97 Controller AC-Link
SPDIF SPDIF digital audio output To SPDIF output connector
