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零件编号 | VV5410 | ||
描述 | Mono and Colour Digital Video CMOS Image Sensors | ||
制造商 | ST Microelectronics | ||
LOGO | |||
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VV5410 & VV6410
®
Mono and Colour Digital Video CMOS Image Sensors
The VV5410/VV6410 are multi format digital output imaging
devices based on STMicroelectronics’s unique CMOS
sensor technology. Both sensors require minimal support
circuitry.
VV5410 (monochrome) and VV6410 (colourised) produce
digital video output. The video streams from both devices
contain embedded control data that can be used to enable
frame grabbing applications as well as providing input data
for the external exposure controller.
The pixel array in VV6410 is coated with a Bayer colour
pattern. This colourised sensor can interface to a range of
STMicroelectronics co-processors. A chipset comprising
VV6410 and STV0657 will output 8bit YUV or RGB digital
video. A USB camera can be realised by partnering VV6410
with STV0672. Finally a high quality digital stills camera can
be produced by operating VV6410 with STV0680B-001.
Please contact STMicroelectronics for ordering information
on all of these products.
Both VV5410 and VV6410 are initialised in a power saving
mode and must be enabled via I2C control before they can
produce video. The I2C allows the master coprocessor to
reconfigure the device and control exposure and gain
settings.
USB systems are catered for with an ultra low power, pin
driven, suspend mode.
The on board regulator can supply sufficient current drive to
power external components, (e.g. the video coprocessor).
Functional block diagram
DATA
FST
LST
QCK
DIGITAL
CONTROL
LOGIC
READOUT
STRUCTURE
SRAM LINE STORE
X-DECODER
COLUMN ADC
SUSPEND
OEB
SCL
SDA
Y-
DECODER
PIXEL ARRAY
VOLTAGE REFERENCES,VOLTAGE REGULATORS AND AUDIO AMP CIRCUITRY
Key Features
• 3.3V operation
• Multiple video formats available
• Pan tilt image feature
• Sub sampled image full FOV feature
• On board 10 bit ADC
• On board voltage regulator
• Low power suspend mode for USB systems
• Automatic black and dark calibration
• On board audio amplifier
• I2C communications
Applications
• PC camera
• Personal digital assistant
• Mobile video phones
• Digital stills cameras
Specifications
Effective image sizes after 352 x 288 (CIF,PAL)
colour processing
176 x 144 (QCIF)
Pixel resolution
up to 356 x 292
Pixel size
7.5µm x 6.9µm
Array size
2.73mm x 2.04mm
Exposure control
+81dB
Analogue gain
+12dB (recommended max)
SNR
c.56dB
Random Noise
1.17mV
Sensitivity (Green channel) 2.1V/lux.sec
Dark Current
46mV/sec
VFPN
1.2mV
Supply voltage
3.0V- 6.0V DC +/− 10%
Supply current
26.2mA (max,CIF@30fps)
85µA (suspend mode)
Operating temperature
(ambient)
0oC - 40oC
Package type
36pin CLCC
cd5410-6410f: Rev 3.0 28 September 2000
Commercial in confidence
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VV5410 & VV6410
Introduction
2.4.3 Serial Interface Programmable Pins
The FST and QCK pins are re-configurable to follow the state of 2-bits in a serial register. The user could then use these control
bits to control a peripheral device, a motor or shutter mechanism for example.
8/105
cd5410-6410f-3-0.fm
Commercial in confidence
VV5410 & VV6410
Operating Modes
3.4 QCIF Output Modes
VV5410/VV6410 has two QCIF output modes, pan/tilt QCIF (ptQCIF) and sub sampled QCIF (ssQCIF), both of which have the
same output format. The data contained within the active QCIF image differs between the sub sampled and pan tilt modes. As
the QCIF mode contains a quarter of the data of the CIF mode, the effective pixel clock can be run at a quarter of the rate. This
means that in CIF mode a system clock of 16MHz will produce a field rate of 30fps, whereas in QCIF mode a system clock of only
8MHz is required to produce the same field rate. Note that the sensor divides the system clock internally by 4 for CIF mode and 8
for QCIF mode. If the user supplied the sensor with a 16Mhz system clock and selected QCIF mode then a field rate of 60fps is
possible.
3.4.1 Pan/Tilt QCIF
In this mode the QCIF image is generated by outputting a cropped portion of the CIF image as illustrated in Figure 9. When the
pan-tilt QCIF video mode is initially selected the image will be horizontally and vertically justified in the within the full size array
(364 pixels by 292 pixels). The coordinates which define the top left corner of the QCIF portion of the array to be output are
defined by the x-offset & y-offset parameters in serial registers [88 - 91] inclusive.
y-offset
x-offset
QCIF Image
180 pixels
364 pixels
Figure 9 : Pan/Tilt QCIF Image Format
The x-offset and y-offset parameters are subject to minimum and maximum values which are set according to the video output
mode (horizontal shuffle etc). Any clipping (against a maximum) or clamping (against a minimum) will be automatically controlled
by the sensor logic. Regardless of whether any of the shuffle/mirror modes have been selected the user should always identify
the top left corner coordinates as the x-offset and y-offset. To preserve the Bayer pattern at the sensor output the first pixel image
of the image should always be green followed by red. If the x or y offsets are adjusted by a single step, i.e. adjust the x-offset from
n to n+1, then this pattern will be corrupted. The user should always write an odd number to the x and y offset registers and this
will preserve the Bayer pattern. The 5410, monochrome sensor is unaffected by such an adjustment to the x-offset coordinate, as
the pixels do not contain any colour information.
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cd5410-6410f-3-0.fm
Commercial in confidence
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页数 | 70 页 | ||
下载 | [ VV5410.PDF 数据手册 ] |
零件编号 | 描述 | 制造商 |
VV5410 | Mono and Colour Digital Video CMOS Image Sensors | ST Microelectronics |
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