IDTSTAC9751XXTAEC1XR IDT, Integrated Device Technology Inc, IDTSTAC9751XXTAEC1XR Datasheet - Page 31

• Manufacturer Part Number: IDTSTAC9751XXTAEC1XR
• Description: IC CODEC AC'97 2CH VALUE 48-LQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Audio Codec '97r

Specifications of IDTSTAC9751XXTAEC1XR

• Resolution (bits): 18 b, 20 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 85 / 89
• Voltage - Supply, Analog: 3.14 V ~ 3.47 V; 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.14 V ~ 3.47 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: STAC9751XXTAEC1XR

6. STAC9750/9751 MIXER
IDT™
VALUE-LINE TWO-CHANNEL AC’97 CODECS
STAC9750/9751
VALUE-LINE TWO-CHANNEL AC’97 CODECS
The STAC9750/9751 includes analog and digital mixers 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:
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The digital mixer includes inputs for the PCM DAC and the recorded ADC output
PCMOut
System Audio: digital PCM input and output for business, games and 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
ADCRecord
28h: D5-D4
Sources
Analog
Select
Audio
Slot
Figure 17. STAC9750 2-Channel Mixer Functional Diagram
PC_BEEP
Phone
MIC1
MIC2
LINEIN
CD
AUX
VIDEO
2Ah:D5-D4
20h:D8
Select
Slot
DAC
0Eh:D6
30 dB
6E:D2
20 or
6Ah:D1
0Ch
0Ah
0Eh
10h
12h
16h
14h
18h
vol
PCM to
SPDIF
vol
vol
vol
vol
vol
vol
vol
mute
mute
mute
mute
mute
mute
mute
mute
31
SPDIF
AllRecord
AllAnalog
Σ
vs
-6dB
MUX
Σ
6Eh:D12
Σ
KEY
20h:D15
STAC9750/9751
MonoAnalog
StereoAnalog
Digital
1Ah
-6dB
Σ
3D
20h:D9
1Ch
Volume
Record
Headphone
04h
02h
06h
Volume
Volume
Volume
Ganged3DControl
Master
Mono
ADC
3D
3D
22h:D2-D3
20h:D13
Select
Slot
MONO_OUT
HP_OUT
LINE_OUT
PC AUDIO
V 5.8 103106
PCMIn