AS0260CSSC28SUD20 datasheet(56/83 Pages) ONSEMI

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AS0260 DS Rev. G Pub. 5/15 EN

©Semiconductor Components Industries, LLC, 2015.

AS0260: 1/6-Inch 1080P High-Definition (HD) System-On-A-Chip (SOC) Digi-

tal Image Sensor

The AS0260 does not maintain coherency between UVC_POWER_LINE_FREQUENCY_-

CONTROL and the CAM Control variable equivalent. Issue a Refresh command to force

coherency.

Hue Control

The hue control sets the amount of hue adjustment (rotation) applied by the AS0260.

Hue adjustment is global—it affects all pixels in the image.

The AS0260 does not support every code within the permitted range; the AS0260 will

round the set value to the nearest supported code.

Saturation Control

The AS0260 supports a brightness-dependent saturation control, exposed through the

CAM control interface. The actual amount of saturation applied (each frame) is depen-

dent upon the estimated brightness of the scene. This allows the AS0260 to adapt to

various scene lighting conditions. This is very similar to the contrast control adaption.

A lowlight saturation value of zero means no color-correction. A UVC saturation of zero

means grey-scale; a monochrome image. In both cases, a value of 128 means 'unity' - the

CCM will not be altered. In both cases, a value above 128 results in a 'boosted' CCM.

Sharpness Control

Controls the amount of sharpening adjustment applied to the image by the AS0260.

The AS0260 supports a brightness-dependent sharpness control, exposed through the

CAM control interface. The actual amount of sharpening applied (each frame) is depen-

dent upon the estimated brightness of the scene. This allows the AS0260 to adapt to

various scene lighting conditions. This is very similar to the contrast control adaption -

see section 6.7.

The CAM control interface provides two sharpness controls; one for brighter scenes, and

one for dark scenes. These correspond to the brightness-metric knee points. If the

brightness-metric is below the start point, the Lowlight algorithm applies the 'bright'

sharpness. If the metric is above the stop point, the 'dark' setting is applied. If the metric

is between the two points, the Lowlight algorithm calculates the sharpness by linear

interpolation between the 'bright' and 'dark' settings, proportional to the brightness-

metric. The result of the Lowlight calculation is termed the 'lowlight' sharpness.

Variable

Name

Type

Default

R0xCC10

VAR(0x13,0x0010)

UVC_HUE_CONTROL

INT16

Dependent upon CAM

configuration

Variable

Name

Type

Default

R0xCC12

VAR(0x13,0x0012)

UVC_SATURATION_CONTROL

UINT16

UFIXED7

128 (unity)

Variable

Name

Type

Default

R0xCC14

VAR(0x13,0x0014)

UVC_SHARPNESS_CONTROL

INT16

0 (no sharpening adjustment)

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