Camera Single-Chip. PAC7312 Datasheet

PAC7312 Single-Chip. Datasheet pdf. Equivalent


PixArt PAC7312
PAC7312
PAC7312 VGA PC Camera Single-Chip with Audio
General Description
The PAC7312 is a single chip with an embedded VGA CMOS image sensor and USB 1.1 interface. It has JPEG
image compression and image processing. The generic application is a PC camera. JPEG decoder and auto
exposure are performed by software in PC side. And the optical size is 1/4” which can easily be embedded in
LCD monitors, notebooks or PDA. It also provides high quality audio sampling function for sound recording. The
audio function complies with USB audio device class 1.0.
There are 4 IO-trapping pins with internal pull-low resistors. It is flexible for customers to set PID. It supports the
interface to a serial-EEPROM. When the EEPROM function is enabled, the internal control registers can be
power-up loaded from external EEPROM. This allows customization of VID, PID, product string.
Features
Key Specification
z VGA resolution, ~1/4”Lens
z Frame rate up to 30fps at following resolution format
„ VGA format (640x480) with JPEG compression
Supply Voltage
Resolution
5.0V ± 10%
640 (H) x 480 (V)
„ CIF format (352x288) with JPEG compression
„ QVGA format (320x240) with JPEG compression
Array Diagonal
4.48mm
„ QCIF format (176x144) without compression
Optical format
1/4“
„ QQVGA format (160x120) without compression
z RGB Bayer’s pattern raw data
Pixel Size
5.6um x 5.6um
„ Up to 3fps @VGA format (640x480)
Frame Rate
Up to 30fps
„ Up to 12fps @CIF format (352x288)
„ Up to 12fps @QVGA format (320x240)
System Clock
12MHz
„ Up to 30fps @QCIF format (176x144)
Color Filter
„ Up to 30fps @QQVGA format (160x120)
z Standard JPEG compression engine comply to ISO/IEC Scan mode
RGB Bayer Pattern
Progressive
10918-1(JPEG)
z AEC/AGC/AWB automatic
z 4 IO-trapping pins to set USB PID
Sensitivity
PGA gain
3.06 V/lux*sec
23.52dB (Max.)
z Support USB suspend mode
S/N ratio
z Support video data transfer through USB isochronous
>45dB
transfer
Power consumption 65mA
z Snapshot control through USB interrupt pipe
z USB Vendor ID, Product ID, device release number and
Package
48-pin PLCC / 37-pin CSP
the string descriptor index via a serial EEPROM
(93C46) or by metal mask
z Complete Universal Serial Bus® spec V1.1
compatibility
z Built in 8bits mono audio ADC for audio recording
through microphone, 16KHZ sampling rate, 8/16bits
PCM format
z USB audio device class 1.0 compatibility
Ordering Information
Order number
Package Type
Package Size(mm)
PAC7312PE
PAC7312CS
48-pin PLCC
37-pin CSP
11.43 x 11.43
5.06 x 5.55
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
1
PixArt Imaging Inc.
E-mail: fae_service@PixArt.com.tw
V1.5 Oct. 2005


PAC7312 Datasheet
Recommendation PAC7312 Datasheet
Part PAC7312
Description VGA PC Camera Single-Chip
Feature PAC7312; PAC7312 PAC7312 VGA PC Camera Single-Chip with Audio General Description The PAC7312 is a single c.
Manufacture PixArt
Datasheet
Download PAC7312 Datasheet




PixArt PAC7312
PixArt Imaging Inc.
PAC7312
VGA PC Camera Single-Chip with Audio
1. Pin Assignment
1.1PLCC Package
Pin# Name
Type Description
1 NC
- No Connection
2 MIC
IN Microphone input
3 NC
- No Connection
4 VRB
BYPASS Analog voltage reference
5 VCM
BYPASS Analog voltage reference
6 NC
- No Connection
7 NC
- No Connection
8 VRT
BYPASS Analog voltage reference
9 VDDA
BYPASS Analog power for AD/DA/PGA, 2.5V
10 VDDAY
BYPASS Sensor reset power reference
11 EPR_DO
IN
Data output of EEPROM
12 VSSQ
GND Ground for I/O and PHY
13 VDDQ
BYPASS Power for I/O and PHY
14 EPR_CS/TR2 OUT Chip Select of EEPROM; (IO trap pin for PID2, internal pull-down 100Kohm)
15 EPR_CK/TR3 OUT Serial clock of EEPROM; (IO trap pin for PID3, internal pull-down 100Kohm)
16 EPR_DI/TR1 OUT Data input of EEPROM; (IO trap pin for PID1, internal pull-down 100Kohm)
17 VSSAY
GND Sensor ground
18 NC
- No Connection
19 NC
- No Connection
20 GPO/TR0
OUT General purpose output; (IO trap pin for PID0, internal pull-down 100Kohm)
21 LED
OUT LED driver
22 NC
- No Connection
23 TEST2
IN Test pin, internal pull-up 100Kohm
24 EPR_EN
IN
Enable signal of EEPROM (1: enable, 0: disable), internal pull-down 100Kohm
25 IOTRAP# IN
I/O trap enable signal (0: enable, 1: disable, internal pull-down 100Kohm)
26 KEY#
IN Snapshot control signal (Active Low, internal pull-up 100Kohm)
27 NC
- No Connection
28 VSSQ
GND Ground for I/O and PHY
29 VDDD
BYPASS Logic power for mixed-mode circuit, 2.5V
30 PWR_5V
PWR Main power, USB bus power
31 NC
- No Connection
32 VDDQ
BYPASS Power for I/O and PHY, 3.3V
33 GPIO
IO General purpose input/output, internal pull-down 100Kohm
34 TEST1
IN Test pin. Connect to GND in normal operation mode
35 NC
- No Connection
36 RESET# IN Chip power up reset
37 VSSQ
GND Ground for I/O and PHY
38 XOUT
OUT Crystal output
39 XIN
IN Crystal input
40 DP
I/O DP for USB1.1 PHY
41 DN
I/O DN for USB1.1 PHY
42 NC
- No Connection
43 VDDQ
BYPASS Power for I/O and PHY
44 VDDP
BYPASS Analog power for PLL
45 VDDAD
BYPASS Analog voltage reference power for core logic, 2.5V
46 VDDAV
BYPASS Analog voltage reference
47 VSSA
GND Analog ground
48 PWR_5V
PWR Main power, USB bus power
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
2
PixArt Imaging Inc.
E-mail: fae_service@PixArt.com.tw
V1.5 Oct. 2005



PixArt PAC7312
PixArt Imaging Inc.
PAC7312
VGA PC Camera Single-Chip with Audio
1.2 CSP Package
Pin# Name
Type Description
1 MIC
IN Microphone input
2 VRB
BYPASS Analog voltage reference
3 VCM
BYPASS Analog voltage reference
4 VRT
BYPASS Analog voltage reference
5 VDDA
BYPASS Analog power for AD/DA/PGA, 2.5V
6 VDDAY
BYPASS Sensor reset power reference
7 EPR_DO
IN
Data output of EEPROM
8 VSSQ
GND Ground for I/O and PHY
9 VDDQ
BYPASS Power for I/O and PHY
10 EPR_CS/TR2 OUT Chip Select of EEPROM; (IO trap pin for PID2, internal pull-down 100Kohm)
11 EPR_CK/TR3 OUT Serial clock of EEPROM; (IO trap pin for PID3, internal pull-down 100Kohm)
12 EPR_DI/TR1 OUT Data input of EEPROM; (IO trap pin for PID1, internal pull-down 100Kohm)
13 VSSAY
GND Sensor ground
14 GPI/TR0
OUT General purpose output; (IO trap pin for PID0, internal pull-down 100Kohm)
15 LED
OUT LED driver
16 EPR_EN
IN
Enable signal of EEPROM (1: enable, 0: disable), internal pull-down 100Kohm
17 IOTRAP# IN
I/O trap enable signal (0: enable, 1: disable, internal pull-down 100Kohm)
18 KEY#
IN Snapshot control signal (Active Low, internal pull-up 100Kohm)
19 NC
- No Connection
20 VSSQ
GND Ground for I/O and PHY
21 VDDD
BYPASS Logic power for mixed-mode circuit, 2.5V
22 PWR_5V
PWR Main power, USB bus power
23 VDDQ
BYPASS Power for I/O and PHY
24 GPIO
IO General purpose input/output, internal pull-down 100Kohm
25 TEST1
IN Test pin. Connect to GND in normal operation mode
26 RESET# IN Chip power up reset
27 VSSQ
GND Ground for I/O and PHY
28 XOUT
OUT Crystal output
29 XIN
IN Crystal input
30 DP
I/O DP for USB1.1 PHY
31 DN
I/O DN for USB1.1 PHY
32 VDDQ
BYPASS Power for I/O and PHY, 3.3V
33 VDDP
BYPASS Analog power for PLL
34 VDDAD
BYPASS Analog voltage reference power for core logic, 2.5V
35 VDDAV
BYPASS Analog voltage reference
36 VSSA
GND Analog ground
37 PWR_5V
PWR Main power, USB bus power
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
3
PixArt Imaging Inc.
E-mail: fae_service@PixArt.com.tw
V1.5 Oct. 2005







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