OV7620 datasheet(27/60 Pages) ETC

27 / 60 page

OV7620 Product Specifications - Rev. 1.2 (5/13/00)

OMNIVISION TECHNOLOGIES INC.

Preliminary Company Confidential

BLU<6:0> - white balance value for the blue channel.

The formula is:

Blue_gain=1+(BLU<7:0> - [80])/[100]; range (0.5x ~ 1.5x).

BLU<7> - Sign bit. If “1”, Blue gain increase; “0” gain decrease.

RED<6:0> - white balance value for the red channel.

The formula is:

Red_gain=1+(RED<7:0> - [80])/[100]; range (0.5x ~ 1.5x).

RED<7> - Sign bit. If “1”, Red channel gain increase; “0” gain decrease.

SAT<7:0> - saturation adjustment for the UV channel based on the default setting;

range (-4dB ~ +6dB). If SAT<7:0> > [80], increase; if SAT<7:0> < [80], decrease.

This register is reserved for internal test use. Write data to this register will be no function.

BRT<7:0> - brightness adjustment for the Y/RGB channel based on the default setting;

range (-200mv ~ +200mv). If BRT<7:0> > [80], brightness increase; If BRT<7:0> < [80], bright-

ness decrease. This register is auto/manual controllable. If register 2D bit 4=1, this register is

controlled by chip automatically, if write value to this register, this value will be updated by

internal circuit. Only when register 2D bit 4=0, this register can be set to any value

Bits

BLU7

BLU6

BLU5

BLU4

BLU3

BLU2

BLU1

BLU0

Default

Bits

RED7

RED6

RED5

RED4

RED3

RED2

RED1

RED0

Default

Bits

SAT7

SAT6

SAT5

SAT4

SAT3

SAT2

SAT1

SAT0

Default

-0

Bits

BRT7

BRT6

BRT5

BRT4

BRT3

BRT2

BRT1

BRT0

Default

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