VL6522 Datasheet, PDF (1/35 Pages) STMicroelectronics – VGA resolution USB2.0 web camera sensor

VL6522
VGA resolution USB2.0 web camera sensor
Preliminary Data
Features
Description
■ 640 x 480 (VGA) USB2.0 Web camera
■ RGB Bayer color filter array
■ 3.6 µm pixel size
■ Integrated 10-bit video ADC and processing
■ 16-bit audio pre-amplifier, Σ - Δ ADC and
processing
■ USB2.0 high speed interface for data transfer
and control
■ I²C master capability
■ USB audio class type 1 compliance
■ USB video YUV2 compliance
■ On-chip 3.3 V and 1.8 V regulators
■ Requires single 5 V supply
■ Minimum required PCB support components
■ Video format: 640 x 480 YUV2 up to 30 fps
■ Single 12 MHz input clock
■ Integrated image processing functions:
– Automatic exposure
– Automatic white balance
– Dark level compensation
– Lens shading correction
– Image sub-sampling
– Flicker cancellation
– Sharpening
– Gamma correction
– RGB to YUV 422
■ Audio processing:
– Audio class compliance PCM16
– Preamplifier + ADC + processing
– Audio rates of 8 kHz to 48 kHz, 16 bits
– Audio dynamic range from mic. input to
USB data output > 60 dB
The VL6522 is a VGA imager on chip (IOC),
fabricated in a high performance 0.18 µm CMOS
imaging process. The device produces a YUV
4:2:2 digital video data stream at up to 60^(a)
frames per second, and supports a microphone
input.
Video and audio data is output via a USB2.0 high
speed (480 Mbps) interface and allows simple
interfacing to a host PC using generic audio and
video class drivers under the appropriate
operating system (Windows XP). Audio/video
class compliance and vendor command sets
allow development of other O/S drivers with
relative ease.
Figure 1. Functional block diagram
Audio
pre-amplifier
+
ADC
VGA pixel array
+
ADC readout
Power
management
audio
data
pixel video
data
OSC, PLL
Digital processing
USB2
interface
a. 60 fps max at QVGA resolution, 30 fps max at VGA
resolution
July 2007
Rev 2
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
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