AS0260CSSC28SUD20 datasheet(52/83 Pages) ONSEMI

52 / 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

Note that changing the auto-exposure priority setting to CONSTANT_FRAME_RATE will

result in a 'restart' of the AE algorithm. This may result in a number of poorly exposed

frames.

Exposure Time (Absolute)

The exposure time (absolute) control is only active when auto-exposure is disabled (see

Auto-Exposure Mode). When auto-exposure is enabled, changes to exposure time (abso-

lute) will be rejected with EBUSY.

The default value of UVC_EXPOSURE_TIME_ABSOLUTE_CONTROL is undefined when

auto-exposure is enabled. In the event that auto-exposure is disabled, the default value

is the active exposure time at the time the change is made.

The permitted range of exposure times is dependent upon the current CamControl

configuration (pixel clock speed and sensor configuration). Attempts to set an exposure

time 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.

The UVC_MANUAL_EXPOSURE_CONFIG variable configures whether the exposure

time can exceed the current frame interval (as set by UVC_FRAME_INTERVAL_CON-

TROL). The configuration variable also determines whether the host can set any expo-

sure time, or only multiples of the power line frequency period (to avoid flicker). Note

that any clamping of UVC_EXPOSURE_TIME_ABSOLUTE_CONTROL due to a frame

interval limitation, or a flicker avoidance limitation, is silent; UVC_RESULT_STATUS will

not be affected.

Variable

Name

Type

Default

0xCC04

VAR(0x13,0x0004)

UVC_EXPOSURE_TIME_ABSOLUTE_CONTRO

UINT32 Undefined until AE mode

disabled

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