STAC9766 Datasheet, PDF (42/97 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
6.2. Mixer Functional Diagrams
Figure 20. STAC9766 2-Channel Mixer Functional Diagram
PCMOut
28h: D5-D4
Slot
Select
2Ah:D5-D4
Slot
Select
6Ah:D1
PCM to
SPDIF ^SPDIF
KEY
MonoAnalog
StereoAnalog
Digital
DAC
PC_BEEP
Analog
Audio
Sources
Phone
20h:D8
MIC1
MIC2
LINEIN
CD
AUX
0Eh:D6 & 6E:D2
10, 20 or
30 dB
VIDEO
18h
20h:D13
22h:D2-D3
vol mute _3D
Digital
0Ah
vol mute
PCBeep
0Ch
vol mute
20h:D13
0Eh
vol mute
Σ 22h:D2-D3
3D Σ
10h _{vol mute}
12h _{vol mute}
16h
vol mute
14h
vol mute
AllAnalog
vs
AllRecord
MUX
6Eh:D12
-6dB
Σ
04h
Headphone
Volume
20h:D15
-6dB
02h
Master
Volume
06h
Σ
Mono
Volume
1Ah
20h:D9
1Ch
Record
Volume ADC
ADCRecord
HP_OUT
LINE_OUT
MONO_OUT
38h:D5-D4
Slot
Select
PCMIn
Figure 21. STAC9767 2-Channel Mixer Functional Diagram
PCMOut
28h: D5-D4
Slot
Select
2Ah:D5-D4
Slot
Select
6Ah:D1
PCM to
SPDIF
SPDIF
KEY
MonoAnalog
StereoAnalog
Digital
DAC
PC_BEEP
Analog
Audio
Sources
Phone
20h:D8
MIC1
MIC2
LINEIN
CD
0Eh:D6 & 6E:D2
10, 20 or
30 dB
AUX
VIDEO
18h
vol
0Ah
0Ch
0Eh
10h
12h
16h
14h
mute
20h:D13
22h:D2-D3
3D
vol mute
vol mute
vol mute
vol mute
vol mute
vol mute
vol mute
Digital
PCBeep
20h:D13
Σ
22h:D2-D3
3D
Σ
AllAnalog
vs
AllRecord
MUX
6Eh:D12
-6dB
Σ
04h
Headphone
Volume
20h:D15
-6dB
Σ
02h
Master
Volume
06h
Mono
Volume
1Ah
20h:D9
1Ch
Record
Volume ADC
ADCRecord
HP_OUT
LINE_OUT
MONO_OUT
38h:D5-D4
Slot
Select
PCMIn
IDT™
42
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
STAC9766/9767
V 7.4 12/06