CSG14K_CSG8K datasheet(89/114 Pages) OSRAM

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CSG14K_CSG8K

Functional Description

Datasheet

• PUBLIC

DS000571

• v2-01 • 2023-Feb-10

113

│ 88

7.6.3

Pixel Bit Order

Figure 110:

Output Bit Order Register

Reg. Name

Bank

Addr

Bits

Description

OUTP_BITORDER

[0]

0: Serial data is sent LSB first

1: Serial data is sent MSB first

To accommodate different receiver systems, least or most significant bit of pixel data can be

sent first (within the pixel word). This is independent from the chosen output format as it acts

on the level of the pixel data.

7.7

Configuring the On-Chip Data Processing

7.7.1

Optical Black Clamping

Figure 111:

Optical Black Registers

Reg. Name

Bank

Addr

Bits

Description

EOB_TARGET

58-59

[12:0]

Sets the target black level value in DN

EOB_BYPASS

[0]

0: OBC on (recommended)

1: OBC off

EOB_BYPASS_VALUE

94-95

[12:0]

Sets the ideal black level at the ADC (when OBC off).

This section explains how to set and correct the black levels.

Black Level Mapping

The black level at a certain point in the pixel data path on the sensor is the analog level or

digital word that corresponds to the level of an ideal dark pixel (zero illumination). In practice,

it is the average of all real dark pixels (optically shielded) at that point in the data path.

The black level at the output of the ADC does not equal the desired black level in the output

images for several reasons including the ADC architecture, fixed pattern and temporal noise

(row noise, frame noise), dark current and so on.

As illustrated in the figure below, the black level at the ADC output needs to be mapped on

the target black level at the sensor output.

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