VS6724 datasheet(71/118 Pages) STMICROELECTRONICS

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VS6724

Programming model and register description

71/118

Exposure controls

0x0d8c

bUserMinimumFrameRate_Hz

Default value

0x1e

Purpose

Sets the maximum framerate employed when in automatic framerate

mode.

Type

BYTE

0x0d8e

bRelativeChange_num

Default value

0x02

Purpose

Numerator for calculation of relative change in framerate.

Type

BYTE

0x0d90

bRelativeChange_den

Default value

0x02

Purpose

Denominator for calculation of relative change in framerate

Type

BYTE

0x0e01

0x0e02

fpImpliedGain (read only)

Purpose

Displays the present value of implied gain

Type

FLOAT

Can be controlled in all stable states

Table 25.

Automatic frame rate control (continued)

Index

AutomaticFrameRateControl(1)

Table 26.

Exposure controls

Index

ExposureControls(1)

0x1080

bMode

Default value

<0> AUTOMATIC_MODE

Purpose

Sets the mode for the exposure algorithm

Type

CODED

possible values

<0> AUTOMATIC_MODE - Automatic Mode of Exposure which includes

computation of Relative Step

<1> COMPILED_MANUAL_MODE - Compiled Manual Mode in which

the desired exposure is given and not calculated by algorithm

<2> DIRECT_MANUAL_MODE - Mode in which the exposure

parameters are input directly and not calculated by compiler

<3> FLASHGUN_MODE - Flash Gun Mode in which the exposure

parameters are set to fixed values

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