AD1819B

–9–

REV. 0

Analog I/O

These signals connect the AD1819B component to analog sources and sinks, including microphones and speakers.

Pin Name

LQFP

I/O

Description

PC_BEEP

12

I

PC Beep. PC Speaker Beep Pass-Through

PHONE_IN

13

I

Phone. From Telephony Subsystem Speakerphone or Handset

AUX_L

14

I

Auxiliary Input Left Channel

AUX_R

15

I

Auxiliary Input Right Channel

VIDEO_L

16

I

Video Audio Left Channel

VIDEO_R

17

I

Video Audio Right Channel

CD_L

18

I

CD Audio Left Channel

CD_GND

19

I

CD Audio Analog Ground Sense for Differential CD Input

CD_R

20

I

CD Audio Right Channel

MIC1

21

I

Microphone 1. Desktop Microphone Input

MIC2

22

I

Microphone 2. Second Microphone Input

LINE_IN_L

23

I

Line In Left Channel

LINE_IN_R

24

I

Line In Right Channel

LINE_OUT_L

35

O

Line Out Left Channel

LINE_OUT_R

36

O

Line Out Right Channel

MONO_OUT

37

O

Monaural Output to Telephony Subsystem Speakerphone

Filter/Reference

Pin Name

LQFP

I/O

Description

27

O

Voltage Reference Filter

28

O

Voltage Reference Output 5 mA Drive (Intended for Mic Bias)

AFILT1

29

O

Antialiasing Filter Capacitor—ADC Right Channel

AFILT2

30

O

Antialiasing Filter Capacitor—ADC Left Channel

FILT_R

31

O

AC-Coupling Filter Capacitor—ADC Right Channel

FILT_L

32

O

AC-Coupling Filter Capacitor—ADC Left Channel

RX3D

33

O

3D Phat Stereo Enhancement—Capacitor

CX3D

34

I

3D Phat Stereo Enhancement—Capacitor

Power and Ground Signals

Pin Name

LQFP

I/O

Description

1

I

4

I

Digital GND

7

I

Digital GND

9

I

25

I

26

I

Analog GND

38

I

42

I

Analog GND

No Connects

Pin Name

LQFP

I/O

Description

NC

39

No Connect

NC

40

No Connect

NC

41

No Connect

NC

43

No Connect

NC

44

No Connect