FLY SP-770, Как в инструкции

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5.4 CAMERA IMAGE SENSOR
5.4.1 Block Diagram & Description
The MT9T012 is a progressive-scan sensor that generates a stream of pixel data at a
constant frame rate. It uses an on-chip, phase-locked loop (PLL) to generate all internal
clocks from a single master input clock running between 6MHz and 27MHz. The
maximum pixel rate is 64 megapixels/second, corresponding to a pixel clock rate of 64
MHz. The core of the sensor is a 3-megapixel active-pixel array. The timing and
control circuitry sequences through the rows of the array, resetting and then reading
each row in turn. In the time interval between resetting a row and reading that row, the
pixels in the row integrate incident light. The exposure is controlled by varying the time
interval between reset and readout. Once a row has been read, the data from the
columns is sequenced through an analog signal chain (providing offset correction and
gain), and then through an ADC. The output from the ADC is a 10-bit value for each
pixel in the array. The ADC output passes through a digital processing signal chain
(which provides further data path corrections and applies digital gain).
The pixel array contains optically active and light-shielded (“dark”) pixels. The dark
pixels are used to provide data for on-chip offset-correction algorithms (“black level”
control). The sensor contains a set of control and status registers that can be used to
control many aspects of the sensor behavior including the frame size, exposure and gain
setting. These registers can be accessed through a two-wire serial interface.
The output from the sensor is a Bayer pattern; alternate rows are a sequence of either
green/red pixels or blue/green pixels. The offset and gain stages of the analog signal