PixArt Imaging Inc.

PAC7312

VGA PC Camera Single-Chip with Audio

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11

PixArt Imaging Inc.

V1.5 Oct. 2005

6. Reference Application Circuit

6.1PLCCPackage(PAC7312PE)

VDDQ

R12

4.7K

R7

1M

R20 27 ohm

VDDAD

C10

1uF

VSSQ

VDD5V

VSSQ

R21 27 ohm

C15

0.1uF

+

C20

10uF

VSSQ

VSSA

R4

10k

C13

1uF

VSSQ

MIC

C4

47pF

VDDP

C26

10uF

VSSA

VDDP

L4 Short / 3.3uH

VSSA

C34

10uF

C33

0.1uF

Q2

2N3904

C24

10uF

XIN

R14

100k

C36

0.1uF

EPR_DI/TR1

R22

10M

R18

47

C35

4.7nF

CON1

MINI USB 5P

3

2

1

4

5

+

-

+5V

NC

GND2

DP

R9

1K

L1

3.3uH

L2

Open/3.3uH

L3 Short / 3.3uH

C8

1uF

VDD5V

VSSQ

R8

2k

VCM

LED

VRB

VDDAV

C29

0.1uF

X1

12MHz

VDDAD

C23

0.1uF

VDDAV

R11

4.7K

C16

100pF

VSSAY

VSSQ

+

C30

10uF

VDDQ

MIC

RST#

R19

1.5K

VSSA

C11

1uF

KEY

GPO/TR0

S1

KEY

C27

0.1uF

VDDQ

Q1

2N3904

C19

0.001uF

R17

10k

R1

10k

+

C18

22uF

VSSQ

C5

47pF

C12

1uF

R15

22K

C31

20pF

C1 1uF

R2

10k

X2

MICROPHONE

DN

C22

10uF

D1

LED

KEY

R13

1K

VSSQ

U1

PAC7312PE

1

2

3

4

5

19

21

22

23

24

25

26

27

28

29

30

43

44

45

46

47

48

6

20

NC

MIC

NC

VRB

VCM

NC

LED

NC

TEST2

EPR_EN

IOTRAP#

KEY#

NC

VSSQ

VDDD

PWR_5V

VDDQ

VDDP

VDDAD

VDDAV

VSSA

PWR_5V

NC

GPO/TR0

VDD5V

XOUT

VSSA

VDD5V

R5 1K

C25

0.1uF

+

C14

10uF

C9

1uF

C3

1uF

USBGND

C7

1uF

EPR_CK/TR3

VDDQ

VRB

VSSAY

R10

22K

VDDQ

VDD5V

VCM

VDDA

VDDQ

VRT

VDDAY

R6 51k

C28

10uF

C32

20pF

C6

1uF

+

C21

4.7uF

VSSAY

EPR_CS/TR2

C17

4.7uF

VSSQ

R16

27K

R3

10k

GPO/TR0

VDDD

LED

VDDD

C2

1uF