STAC9250 Datasheet, PDF (132/137 Pages) Integrated Device Technology – TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES

STAC9250/9251
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
PC AUDIO
Pin Name
GPIO0
GPIO1
PORT-D_L
PORT-D_R
MONO
AVDD2
PORT-A_L
NC
PORT-A_R
AVSS3
DMIC_L**
DMIC_R**
GPIO2
DMIC_CLK**
SPDIFIN/EAPD/GPIO3
S/PDIF-OUT
Pin Function
General Purpose I/O tied to AVDD50K internal
pull-up to AVddgnda
General Purpose I/O tied to AVDD50K internal
pull-up to AVddgnda
Input/Output of Left DAC0
Input/Output of Right DAC0
Mono Out from DAC
Analog Vdd = 5.0V or 3.3V
Input/Output of Left DAC0
No Connect
Input/Output of Right DAC0
Analog Ground
Digital Mic Input Left Channel
**STAC9251 Only.
For the STAC9250 these pins are a No Connect
Digital Mic Input Right Channel
**STAC9251 Only.
For the STAC9250 these pins are a No Connect
General Purpose I/O tied to AVDD50K internal
pull-up to AVddgnda
Digital Mic Ouput Clock
**STAC9251 Only.
For the STAC9250 these pins are a No Connect
SPDIF Input, External Amplifier Power Down,
General Purpose I/O
SPDIF digital output (50K internal pull-down)
I/O
Internal Pull-up Pin
/Pull-down Location
I/O(Digital)
Pull-up 50 KΩ
or more
33
I/O(Digital)
Pull-up 50K
or more
34
I/O(Analog)
None
35
I/O(Analog)
None
36
O(Analog)
None
37
I(Analog)
None
38
I/O(Analog)
None
39
None
None
40
I/O(Analog)
None
41
I(Analog)
None
42
I(Digital)
None
43
I(Digital)
None
44
I/O(Digital)
Pull-up 50 KΩ
or more
45
O(Digital)
None
46
I/O(Digital)
None
47
O(Digital)
50 KΩ internal
pull-down
48
IDT™
132
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
V 1.1 102706