VS6724 Datasheet, PDF (72/118 Pages) STMicroelectronics – 2 Megapixel single-chip camera module

Programming model and register description
VS6724
Table 26. Exposure controls (continued)
Index
ExposureControls⁽¹⁾
bMetering
0x1082
Default value
Purpose
Type
possible values
<0> ExposureMetering_flat
Weights to be associated with the zones for calculating the mean
statistics Exposure Weight could Centered, Backlit or Flat
C
<0> ExposureMetering_flat - Uniform gain associated with all pixels
<1> ExposureMetering_backlit - more gain associated with centre pixels
and bottom pixels
<2> ExposureMetering_centred - more gain associated with centre
pixels
bManualExposureTime_Num
0x1084
Default value
Purpose
Type
0x01
Exposure Time for Compiled Manual Mode in seconds. Num/Den gives
required exposure time
BYTE
0x1086
bManualExposureTime_Den
Default value
Type
0x1e
BYTE
fpManualFloatExposureTime
0x1089(MSByte)
0x108a(LSByte)
Default value
Purpose
Type
0x59aa (15008)
Exposure Time for the Manual Mode. This value is in microseconds.
iMiscSettings must be configured
FLOAT
fpColdStartDesiredTime_us
0x108d(MSByte)
0x108e(LSByte)
Default value
Purpose
Type
0x59aa (15008)
Exposure Time for the that the system will use when entering RUN
mode
FLOAT
0x1090
iExposureCompensation
Default value
Purpose
Type
0x00
Exposure Compensation - a user choice for setting the runtime target. A
unit of exposure compensation corresponds to 1/6 EV. Default value
according to the Nominal Target of 30 is 0. Coded Value of Exposure
compensation can take values from -25 to 12.
INT8
72/118