PixArt Imaging Inc.
PAC7311
VGA PC Camera Single-Chip
1. Pin Assignment
1.1 PLCC Package
Pin# Name
Type
Description
1
2
3
4
5
6
7
8
9
NC
-
-
-
No Connection
No Connection
No Connection
NC
NC
VRB
VCM
NC
BYPASS Analog voltage reference
BYPASS Analog voltage reference
-
-
No Connection
No Connection
NC
VRT
VDDA
BYPASS Analog voltage reference
BYPASS Analog power for AD/DA/PGA, 2.5V
BYPASS Sensor reset power reference
IN
GND
10 VDDAY
11 EPR_DO
Data output of EEPROM
Ground for I/O and PHY
12 VSSQ
13 VDDQ
BYPASS Power for I/O and PHY
14 EPR_CS/TR2 OUT
15 EPR_CK/TR3 OUT
16 EPR_DI/TR1 OUT
Chip Select of EEPROM; (IO trap pin for PID2, internal pull-down 100Kohm)
Serial clock of EEPROM; (IO trap pin for PID3, internal pull-down 100Kohm)
Data input of EEPROM; (IO trap pin for PID1, internal pull-down 100Kohm)
17 VSSAY
18 NC
GND
-
Sensor ground
No Connection
19 NC
-
No Connection
20 GPO/TR0
21 LED
22 NC
OUT
OUT
-
General purpose output; (IO trap pin for PID0, internal pull-down 100Kohm)
LED driver
No Connection
23 VSSQ
24 EPR_EN
25 IOTRAP#
26 KEY#
27 NC
28 VSSQ
29 VDDD
30 PWR_5V
31 NC
32 VDDQ
33 GPIO
34 TEST
35 NC
GND
IN
Ground for I/O and PHY
Enable signal of EEPROM (1: enable, 0: disable), internal pull-down 100Kohm
I/O trap enable signal (0: enable, 1: disable, internal pull-down 100Kohm)
Snapshot control signal (Active Low, internal pull-up 100Kohm)
No Connection
IN
IN
-
GND
Ground for I/O and PHY
BYPASS Logic power for mixed-mode circuit, 2.5V
PWR
-
Main power, USB bus power
No Connection
BYPASS Power for I/O and PHY, 3.3V
IO
General purpose input/output, internal pull-down 100Kohm
Test pin. Connect to GND in normal operation mode
No Connection
IN
-
36 RESET#
37 VSSQ
38 XOUT
39 XIN
IN
Chip power up reset
Ground for I/O and PHY
Crystal output
GND
OUT
IN
Crystal input
40 DP
I/O
I/O
-
DP for USB1.1 PHY
DN for USB1.1 PHY
No Connection
41 DN
42 NC
43 VDDQ
44 VDDP
45 VDDAD
46 VDDAV
47 VSSA
48 PWR_5V
BYPASS Power for I/O and PHY
BYPASS Analog power for PLL
BYPASS Analog voltage reference power for core logic, 2.5V
BYPASS Analog voltage reference
GND
PWR
Analog ground
Main power, USB bus power
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2
PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
V1.5 Oct. 2005
PIXART [ PIXART IMAGING INC. ]
