CS7615-KQ Просмотр технического описания (PDF) - Cirrus Logic

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CS7615-KQ

CCD Imager Analog Processor

Cirrus Logic 

CS7615

Analog to Digital Converter

After the pixel data is double sampled and the ap-

propriate gain has been applied, it is digitized by

the internal 10-bit A/D converter. These resulting

mosaic data are input to the formatter which for-

mats the data before sending it to the chip output.

The output of the A/D converter is also used by the

internal AGC loop in determining the proper gain

setting, and by the black level adjust when reading

the black pixels.

Black Level Adjust to Code 16 (10-bit Code

64)

The output data are adjusted to hold the image

black level at the 8-bit code of 16, in compliance to

the ITU-601 recommendation. During the blanking

periods, the black level adjustment is updated when

over black pixels. The number of black pixels used

is programmable by the user through the I2C inter-

face.

Formatter

The formatter adds the necessary EAV/SAV timing

codes to the output data in accordance with the

ITU-656 recommendation.

DS231PP6

15

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