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OV7449 PDF даташит

Спецификация OV7449 изготовлена ​​​​«OmniVision Technologies» и имеет функцию, называемую «CMOS NTSC/PAL CAMERACHIP Sensor».

Детали детали

Номер произв OV7449
Описание CMOS NTSC/PAL CAMERACHIP Sensor
Производители OmniVision Technologies
логотип OmniVision Technologies логотип 

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OV7449 Даташит, Описание, Даташиты
Omni ision
®
Advanced Information
Preliminary Datasheet
OV7949/OV7449 CMOS NTSC/PAL CAMERACHIPTM Sensor
with OmniPixel® Technology for Automotive Applications
General Description
The OV7949 (color) and OV7449 (B&W) single chip
CMOS CAMERACHIP™ image sensors are designed to
provide a high level of functionality for applications
requiring a small footprint, low voltage, low power
consumption and high performance color video camera.
The OV7949 supports NTSC/PAL composite video output
and can directly interface with a VCR TV monitor or other
device with 75 ohm loading.
Note: The OV7949 is available in a
Pb lead-free package.
Features
• Single chip 1/3" format video camera
• Composite video (NTSC/PAL) differential output
drive
• Sensitivity boost (+42 dB)
• Automatic exposure/gain with 16 zone control
• Auto white balance control
• Aperture/Gamma correction
• 50/60 Hz flicker cancellation
• External frame sync capability
• SPI/EEPROM used to control overlay and set other
customer variables
• I2C compatible Serial Camera Control Bus (SCCB)
control interface for register programming
• Low power consumption
• Extremely low dark current for high temperature
applications
• Defective pixel correction
• Genlock
• QFP parts qualified to AEC-Q100 standard
Ordering Information
Product
OV07949-Q10V (Color, NTSC)
OV07449-Q10V (B&W, NTSC)
OV07949-Q20V (Color, PAL)
OV07449-Q20V (B&W, PAL)
Package
QFP-48
QFP-48
QFP-48
QFP-48
Applications
• Automobile applications
– Occupant sensor
– Adaptive cruise control
– Rear view / backup camera
– Lane departure warning
– Blind spot detection
– Night vision
Key Specifications
Array Size
Power Supply
PAL
NTSC
Analog/ADC/IO
Digital Core
Power Consumption
Image Area
Exposure Time Range
Sensitivity
S/N Ratio
Dynamic Range
Pixel Size
Dark Current
Fixed Pattern Noise
Package Dimensions
628 x 586
510 x 496
3.3 VDC + 5%
1.8 VDC + 5%
168 mW
(DVDD=1.8V,
all other voltages=3.3V,
75Ω loading)
5.961 mm x 4.276 mm
1/60s - 12 µs (NTSC)
1/50s - 12.5 µs (PAL)
4.7 V/Lux-sec @ 5600K
48 dB
50 dB
9.2 µm x 7.2 µm
10 mW/s @ 60°C
0.079% of VPEAK-TO-PEAK
14.22 mm x 14.22 mm
Figure 1 OV7949/OV7449 Pin Diagram (Top View)
ADVDD
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
FSO/
FSC/CS0
6 5 4 3 2 1 48 47 46 45 44 43
7 42
8 41
9 40
10 39
11 OV7949 / 38
12 37
13 OV7449 36
14 35
15 34
16 33
17 32
18 31
19 20 21 22 23 24 25 26 27 28 29 30
ESO/PAL
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
EGND
© 2007 OmniVision Technologies, Inc.
Version 1.3, September 29, 2006
7949QFP_DS_001
OmniPixel, OmniVision, and the OmniVision logo are registered trademarks of OmniVision Technologies, Inc.
CameraChip is a trademark of OmniVision Technologies, Inc.
These specifications are subject to change without notice.1









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OV7449 Даташит, Описание, Даташиты
OV7949/OV7449 CMOS NTSC/PAL (OmniPixel®) CAMERACHIPSensor
Omni ision
Functional Description
This section describes the various functions of the OV7949. Refer to Figure 2 for the functional block diagram of the OV7949.
Figure 2 Functional Block Diagram
column
sample/hold
image
array
AMP
ADC
DSP
gain
control
DSP
control
overlay
overlay
control
video
encoder
video
encoder
control
DAC
+CVO
-CVO
SPI
interface
CS
SCK
ESO
ESI
timing/clock
generator
register
bank
SCCB
interface
CS0*
CS1*
7949QFP_DS_002
Video Standards
PAL/NTSC TV standards are implemented and available
as output in the OV7949/OV7449 CAMERACHIP sensor.
Note that the accuracy and stability of the crystal clock
frequency is important to avoid unwanted color shift in the
TV video system. OmniVision recommends using a
17.73448MHz (for PAL) or 14.31818MHz (for NTSC)
crystal when utilizing the OV7949/OV7449 CAMERACHIP
sensor.
Video Format
The OV7949/OV7449 CAMERACHIP sensor supports
Composite (CVBS) video format only. Composite signals
are generated from the built-in TV encoder.
Image Sensor Functions
White Balance
The function of white balance in the OV7949/OV7449
CAMERACHIP sensor is to adjust and calibrate the image
device sensitivity on the primary (RGB) colors to match
the color cast of the light source. The Auto White Balance
(AWB) can be enabled or disabled by register control. If
the AWB is enabled, the image sensors continuously
perform white balancing.
Mirror and Vertical Flip
The OV7949/OV7449 provides horizontal mirror and
vertical flip functions. These functions can be turned ON
or OFF via register settings.
2 Proprietary to OmniVision Technologies, Inc.
Version 1.3, September 29, 2006









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OV7449 Даташит, Описание, Даташиты
Omni ision
Functional Description
Overlay Control
The OV7949/OV7449 CAMERACHIP sensor has an overlay
capability where the user can store an overlay bit map
image in an external storage device with an SPI interface.
At power up, OV7949/OV7449 will start the SPI interface
automatically. A “0” in the first address bit 7 indicates that
there is no SPI slave device attached, causing the SPI
interface to stop. Otherwise, the OV7949/OV7449 will
check bit 6 of first byte for overwrite control. The user can
define up to 15 bytes in the control register to overwrite the
internal default value (further detail defining this register is
not available at this time). These 15 bytes are only read
one time after power up.
If the first byte bit[7] is “1” and bit[0] is “0”,
OV7949/OV7449 will read the content in address 0x10 to
0x1F for the overlay setting.
Figure 3 SPI Overlay Process Sequence
power up
start SPI
is
N
address
0x00
bit[6]=1?
Y
read content in
addresses
0x01~0x0F to
overwrite
internal register
stop
is
address
0x00 bit[7]=1,
N
stop SPI and overlay
bit[0]=0?
Y
read content in
addresses
0x10~0x0F for
overlay control
setting
is
address
0x10 bit[7]=1,
bit[0]=0?
N
stop overlay
Y
read current
line overlay
bit map data
overlay process
N field end?
Y
reset address
to 0x20
7949QFP_DS_003
Data formats are defined as follows:
EEPROM
Address
Description
0x00
SPI Enable
Bit[7], [0]: SPI enable
00: No SPI
01: No SPI
10: SPI enabled
11: No SPI
Bit[6]:
Register settings replacement enable
0: Register replacement disabled
(0x01 to 0x0F not used)
1: Addresses 0x01 to 0x0F are
used to replace certain register
settings. Settings from these
addresses are fixed and no
longer accessible by SCCB.
0x01 -
0x0F
Used for register replacement settings (see
Table 1 for corresponding SCCB register
addresses.
Overlay Common Setting
Bit[7], [0]: Overlay ON/OFF selection
0x: OFF
10: ON
11: OFF
Bit[6:5]: Overlay opacity setting
00: 25%
0x10
Bit[4:3]:
Bit[2]:
01: 50%
10: 75%
11: 100%
Resolution selection
00: 2x2
01: 3x3
10: 4x4
11: 5x5
Overwrite option
0: Y = r% x Yovly + (1 - r%)Yori)
U = r% x Uovly + (1 - r%)Uori)
V = r% x Vovly + (1 - r%)Vori)
1: Y = r% x Yovly + (1 - r%)Yori)
U = Uovly
V = Vovly
Note:
r% = Overlay opacity (register bits[6:5] shown above)
Yovly = Y Overlay Value (0x11)
Uovly = Y Overlay Value (0x12)
Vovly = Y Overlay Value (0x13)
Yori = Original Y data
Uori = Original U data
Vori = Original V data
0x11 Y Overlay Value
0x12 U Overlay Value
0x13 V Overlay Value
0x14 Overlay Start Line Address MSBs
0x15 Overlay End Line Address MSBs
0x16 Overlay Start Column Address MSBs
0x17 Overlay End Column Address MSBs
0x18
Overlay Window LSBs
Bit[7:6]: Start line LSB
Bit[5:4]: End line LSB
Bit[3:2]: Start column LSBs
Bit[1:0]: End column LSBs
0x19
MemLine - this register determines how many
bytes of the Bit Map file in EEPROM are required
to draw a line
0x1A -
0x1F
Reserved
Note: Bit map file starts from address 0x20
Version 1.3, September 29, 2006
Proprietary to OmniVision Technologies, Inc.
3










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Номер в каталогеОписаниеПроизводители
OV7449CMOS NTSC/PAL CAMERACHIP SensorOmniVision Technologies
OmniVision Technologies

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