STAC9250 Datasheet, PDF (131/137 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
6.3. Pin Table for STAC9250/9251
Pin Name
C2A
C1A
SDATA_IN/MODEM
DVSS
SDATA_OUT
BIT_CLK
DVSS3
SDATA_IN/CODEC
DVDD_CORE3
SYNC
RESET#
PCBEEP
SENSE_A
NC
NC
NC
NC
CD-L
CD-GND
CD-R
PORT-B_L
PORT-B_R
PORT-C_L
PORT-C_R
AVDD1
AVSS1
VREF FILT
VREFOUT-B
VREFOUT-C
NC
NC
CAP2
Pin Function
Isolation Capacitor 2A
Isolation Capacitor 1A
HD Audio Serial Data input for the modem (outbound stream)
Digital Ground
HD Audio Serial Data output (inbound stream)
HD Audio Bit Clock
Digital Ground
HD Audio Serial Data input for the CODEC (outbound stream)
Digital Vdd = 3.3V
HD Audio Frame Sync
HD Audio Reset
PC Beep
Jack insertion detection Ports A,B,C,D
No Connect
No Connect
No Connect
No Connect
CD Audio Left Channel
CD Audio Analog Ground
CD Audio Right Channel
Input/Output of Left DAC2
Input/Output of Right DAC2
Input/Output of Left DAC1
Input/Output of Right DAC1
Analog Vdd = 5.0V or 3.3V
Analog Ground
Analog Virtual Ground
Reference Voltage out drive
(intended for mic bias) for Port B
Reference Voltage out drive
(intended for mic bias) for Port C
No Connect
No Connect
ADC reference Cap
I/O
Internal Pull-up Pin
/Pull-down Location
I/O(Analog)
None
1
I/O(Analog)
None
2
O(Analog)
None
3
I(Digital)
None
4
I/O(Digital)
None
5
I(Digital)
None
6
I(Digital)
None
7
O(Digital)
None
8
I(Digital)
None
9
I(Digital)
None
10
I(Digital)
None
11
I(Analog)
None
12
I(Analog)
None
13
None
None
14
None
None
15
None
None
16
None
None
17
I(Analog)
None
18
I(Analog)
None
19
I(Analog)
None
20
I/O(Analog)
None
21
I/O(Analog)
None
22
I/O(Analog)
None
23
I/O(Analog)
None
24
I(Analog)
None
25
I(Analog)
None
26
O(Analog)
None
27
O(Analog)
None
28
O(Analog)
None
29
None
None
30
None
None
31
O(Analog)
None
32
IDT™
131
TWO-CHANNEL HD AUDIO CODEC WITH MODEM & DUAL DIGITAL MICROPHONE INTERFACES
STAC9250/9251
V 1.1 102706