STAC9758 Datasheet, PDF (112/119 Pages) Integrated Device Technology – HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS

STAC9758/9759
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
PC AUDIO
Table 29. Analog Connection Signals
Pin Name
FRONT_R*
MONO
SURR_L*
AVss3
SURR_R*
CTR*
LFE*
Pin #
36
37
39
40
41
43
44
Type
Description
I/O* Line Out Right Channel (with headphone support)
O To telephony subsystem speakerphone
I/O* Surround Out Left Channel (with headphone support)
I Headphone Ground Return
I/O* Surround Out Right Channel (with headphone support)
I/O* Center Output
I/O* LFE Output
1. ** any unused input pins should be tied together and tied to ground through a capacitor (0.1 µF suggested), except the MIC
inputs, which should have a separate capacitor to ground if not used.
2. * Universal Jack™ capable. These pins may be inputs or outputs and are controlled by registers 64 and 66 (page 0). Only
pins 35/36 OR 39/41 may be used to drive headphones. It is not possible to drive 2 sets of headphones at the same time.
3. For use of pins 16/17 for Video, see section 8.2.11.1: page60.
12.3. Filter/References
These signals are connected to resistors, capacitors, or specific voltages.
Table 30. Filtering and Voltage References
Signal Name
VREF
VREFOUT
AFILT1
AFILT2
CAP2
Pin Number
27
28
29
30
32
Type
O
O
O
O
O
Description
Analog ground (.45*vdd, at 5V;.41*vdd at 3V)
Reference Voltage out 5mA drive (intended for mic bias) (~vdd/2)
Anti-Aliasing Filter Cap - ADC left channel
Anti-Aliasing Filter Cap - ADC right channel
ADC reference Cap
12.4. Power and Ground Signals
Table 31. Power and Ground Signals
Pin Name
AVdd1
AVdd2
AVss1
AVss2
AVss3
DVdd1
DVdd2
DVss1
DVss2
Pin #
25
38
26
42
40
1
9
4
7
Type
I
I
I
I
I
I
I
I
I
Description
Analog Vdd = 5.0 V or 3.3 V
Analog Vdd = 5.0 V or 3.3 V
Analog Gnd
Analog Gnd
analog Gnd
Digital Vdd = 3.3 V
Digital Vdd = 3.3 V
Digital Gnd
Digital Gnd
IDT™
112
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
STAC9758/9759
V 1.2 1206