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STAC9752A Datasheet(PDF) 21 Page - Integrated Device Technology

Part # STAC9752A
Description  AC??7 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
PDF  106 Pages
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

STAC9752A Datasheet(HTML) 21 Page - Integrated Device Technology

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STAC9752A/9753A
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
PC AUDIO
IDT™
21
STAC9752A/9753A
V 1.5 1206
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
3. TYPICAL CONNECTION AND POWER DIAGRAMS
3.1.
STAC9752A/9753A Typical Connection Diagram for 48-pin LQFP
Figure 9. STAC9752A/9753A Typical Connection Diagram 48-pin LQFP
Note: Pin 48: To Disable SPDIF, use an 1K
Ω -10KΩ external pullup resistor.
Note: The CD_GND signal is an AC signal return for the two CD input channels. It is normally biased at about
2.5V. The name of the pin in the AC’97 specification is CD_GND, and this has confused many
designers. It should not have any DC path to GND. Connecting the CD_GND signal directly to ground
will change the internal bias of the entire CODEC, and cause significant distortion. If there is no analog
CD input, then this pin can be No-Connect.
0.1 µF
1 µF
0.1 µF
0.1 µF
1 µF
0.1 µF
2
Ω *
Ferrite Bead
3.3V ± 5%
AVdd1
AVdd2
DVdd1
DVdd2
XTL_IN
XTL_OUT
9
2
3
27 pF
27 pF
24.576 MHz
1
38
25
PC_BEEP
12
PHONE
13
AUX_L
14
AUX_R
15
VIDEO_L
16
VIDEO_R
17
CD_L
18
CD_GND
19
CD_R
20
MIC1
21
MIC2
22
LINE_IN_L
23
LINE_IN_R
41
CAP2
32
*OPTIONAL
0.1 µF
1 µF*
820 pF
29
30
AFILT1
AFILT2
820 pF
AVss1
AVss2
26
42
4
7
DVss1
DVss2
HP_OUT_R
*Terminate ground
plane as close to codec
as possible
Analog
Ground
Digital
Ground
HP_OUT_L
39
37
MONO_OUT
36
LINE_OUT_R
35
LINE_OUT_L
43
GPIO0
44
GPIO1
40
HP_COMM
48
SPDIF
34
NC
33
NC
31
NC
1 µF
27
VREF
VREFOUT
EAPD
CID1
CID0
28
47
46
45
11
RESET#
10
SYNC
24
SDATA_IN
BIT_CLK
SDATA_OUT
5
6
8
STAC9753
*OPTIONAL
27 pF
22
Ω
EMI
Filter
TUNE TO LAYOUT
HP_COMM should be tied to
ground at the headphone pin.
CLOCK_IN*
*Add resistive divider
when using 5V clock.
(Near Clk source)
0
Ω
OPTIONAL



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