STAC9752 datasheet(85/95 Pages) IDT

Part #	STAC9752

Description	TWO-CHANNEL, 20-BIT, AC??7 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

PDF	95 Pages

Scroll/Zoom	100%

Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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85 / 95 page

STAC9752/9753

TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

IDT™

STAC9752/9753

REV 3.3 1206

TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

12. PIN DESCRIPTION

24 LINE_IN_R

23 LINE_IN_L

22 MIC2

21 MIC1

20 CD_R

19 CD_GND

18 CD_L

17 VIDEO_R

16 VIDEO_L

15 AUX_R

14 AUX_L

13 PHONE

MONO_OUT 37

AVdd2 38

HP_OUT_L 39

HP_COMM 40

HP_OUT_R 41

AVss2 42

GPIO0 43

GPIO1 44

CID0 45

CID1 46

EAPD 47

SPDIF 48

Figure 24. Pin Description Drawing

Pin 48: To Enable SPDIF, use a 1 K

Ω-10 KΩ external pulldown. To Disable SPDIF, use a 1KΩ-10KΩ

external pullup. Do NOT leave Pin 48 floating.

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 AC97 specification is CD_GND, and this has confused many design-

ers. 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 serious distortion. If there is no analog CD

input, then this pin can be No-Connect.

48-Pin TQFP

STAC9752 Datasheet(PDF) 85 Page - Integrated Device Technology

STAC9752 Datasheet(HTML) 85 Page - Integrated Device Technology

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