AS0260CSSC28SUD20 datasheet(58/83 Pages) ONSEMI

58 / 83 page

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

Gamma Control

Controls the amount of gamma correction applied by the AS0260

The gamma control adjusts the amount of gamma correction applied by the SOC. The

value of the control is expressed in units multiplied by 100. Note that the gamma value

represents the 'display' gamma - this is the gamma of the final display terminal. The

AS0260 applies the reciprocal of the display gamma.

Note that the automatic gamma curve calculation as supported by the Camcontrol

interface can be disabled. In this event, attempts to change the UVC gamma will be

rejected with EACCES.

The AS0260 does not maintain coherency between UVC_GAMMA_CONTROL and the

Camcontrol variable equivalent. Issue a Refresh command to force coherency.

White Balance Temperature Control

Controls the white balance temperature adjustment applied by the AS0260 (when auto-

white-balance is disabled)

The white balance temperature control sets the white-balance temperature applied by

the AS0260 when the auto-white-balance (AWB) algorithm is disabled. Attempts to set

this control when AWB is enabled will be rejected with EBUSY.

The white-balance temperature is used by the AS0260 to calculate the 'ideal' color-

correction matrix and to calculate the ratios of red and blue gains to apply to white-

balance the scene. When AWB is enabled, the AS0260 calculates the white-balance

temperature itself. UVC_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL is used

to disable AWB.

The permitted range of color temperatures is dependent upon the current Camcontrol

configuration. Attempts to set a color temperature outside this range will be accepted,

but clamped to the current minimum or maximum. UVC_RESULT_STATUS will be set to

ERANGE to indicate a clamp has occurred.

11 to 7

22 to 7

33 to 7

44 to 7

55 to 7

66 to 7

Variable

Name

Type

Default

R0xCC16

VAR(0x13,0x0016)

UVC_GAMMA_CONTROL

UINT16

Dependent upon CAM configuration

Variable

Name

Type

Default

R0xCC18

VAR(0x13,0x0018)

UVC_WHITE_BALANCE_TEMPERATURE_CONTRO

UINT16

Dependent on color temperature when

AWB mode is disabled

Table 16:

UVC Sharpness vs. Adaptive Sharpness Range

UVC sharpness setting

Adaptive sharpness range

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