PixArt Imaging Inc.

PAC7301/PAC7302

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2

PixArt Imaging Inc.

V1.4 Nov 2007

3. Pin Assignment

3.1PLCC Package(11.43X11.43)

Pin# Name

Type

Description

1

MIC_N

IN

Microphone negative input

2

VSSA_AUDIO GND

Audio analog circuit GND

3

VDDADC33

BYPASS Audio ADC power ,3.3V

4

GPI3

IN

General purpose input pin

5

GPO1

OUT

General purpose output pin

6

NC

-

No Connection

7

NC

-

No Connection

8

TEST2

IN

100Kohm

9

RESET#

IN

Chip power up reset

10 GPI1

IN

General purpose input pin

11 VSSQ

GND

Digital Ground for I/O and PHY, digital core.

12 EPR_DO/TR3 IN

13 EPR_DI/TR0

OUT

14 EPR_SK/TR2

OUT

15 EPR_CS/TR1

OUT

16 LED

OUT

LED driver

17 GPI2

IN

General purpose input pin

18 NC

-

No Connection

19 NC

-

No Connection

20 EPR_EN

IN

EEPROM enable pin active high

21 AUD_EnH

IN

22 VSSQ

GND

Digital Ground for I/O and PHY, digital core.

23 VDDD

BYPASS Logic power for digital circuit, 1.8V

24 VDDMD5

PWR

5V power for digital circuit

25 VDDQ

BYPASS Power for I/O and PHY, 3.3V

26 OSC_OUT

OUT

Crystal output

27 OSC_IN

IN

Crystal input

28 DN

I/O

DN for USB1.1 PHY

29 DP

I/O

DP for USB1.1 PHY

30 NC

-

No Connection

31 NC

-

No Connection

32 GPO2

OUT

33 KEY#

IN

Snapshot control signal (Active Low, internal pull-up 100Kohm)

34 VSSA

GND

Analog ground

35 VSSAY

GND

Sensor ground

36 VDDA

BYPASS Analog power for Video PGA/ADC 2.5V

37 VDDAYM

BYPASS Analog power for sensor CDS 2.5V

38 VDDAY

BYPASS Analog power for sensor array 2.5V

39 VDDA33

BYPASS Analog power output 3.3V(for 2.5 regulator use)

40 VDDMA5

PWR

5V power for video analog circuit

41 TEST1

IN

100Kohm

42 NC

-

No Connection

43 NC

-

No Connection

44

VDDMA5_AU

D

PWR

5V power for analog audio circuit

45 VDDPGA33

BYPASS Analog power output for audio PGA 3.3V

46 VCOM

BYPASS Microphone common mode voltage reference(audio power)