STAC9752 Datasheet, PDF (88/95 Pages) Integrated Device Technology – TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
12.3. Filter/References
These signals are connected to resistors, capacitors, or specific voltages.
Signal Name
VREF
VREFOUT
AFILT1
AFILT2
CAP2
Table 34. Filtering and Voltage References
Pin Number
27
28
29
30
32
Type
O
O
O
O
O
Description
Analog ground (0.45 * Vdd, at 5 V; or 0.41 * Vdd at 3 V)
Reference Voltage out 5 mA drive (intended for microphone
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
Pin Name
AVdd1
AVdd2
AVss1
AVss2
DVdd1
DVdd2
DVss1
DVss2
Table 35. Power and Ground Signals
Pin #
25
38
26
42
1
9
4
7
Type
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
Digital Vdd = 3.3 V
Digital Vdd = 3.3 V
Digital Gnd
Digital Gnd
IDT™
88
STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
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