STAC9752A Datasheet, PDF (91/106 Pages) Integrated Device Technology – AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK

STAC9752A/9753A
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
PC AUDIO
11.2. Pinout List 48-pin LQFP Package
Pin#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Table 33. STAC9752A/9753A 48 Pin LQFP Pin List
PIN Name
DVDD
XTAL_IN
XTAL_OUT
DVSS1
SDATA_OUT
BIT_CLK
DVSS2
SDATA_IN
DVDD
SYNC
RESET#
PC_BEEP
PHONE
AUX_L
AUX_R
VIDEO_L
VIDEO_R
CD L
CD GND **
CD R
MIC_L
MIC_R
LINE_IN_L
LINE_IN_R
Pin#
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Pin Name
AVDD1
AVSS1
VREF IN
VREF_OUT
AFILT1
AFILT2
N.C.
CAP2
N.C.
N.C.
Line_Out_L
Line_Out_R
MONO
AVDD2
HP_L
No Connect
HP_R
AVSS3
GPIO0
GPIO1
CID0
CID1
EAPD / GPIO
S/PDIF-OUT
Pin 48: To Disable SPDIF, use an 1KΩ - 1 0 KΩ external pullup resistor.
** 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.
IDT™
91
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
STAC9752A/9753A
V 1.5 1206