ICM515NB datasheet(10/25 Pages) ETC1

10 / 25 page

ICM515NB 574x483 Pixel CMOS NTSC Sensor

Data Sheet V1.0 November 2002

1/17/2003

page 10

Company Confidential

4: 2.5

5: 3

6: 3.5

7: 4

0x31

AD_SP_Hith

0x0A

(10)

[7:0] sharpness high tone threshold

0x33

AD_AWB_CTRL*

0xC7

[0] 0:disable AWB 1:enable AWB

[1] 0: G, R, B has range limit, R>G/2 & G>R/2 &

B>G/2 & G>B/2 1: Gray Wall method

[2] Image changing low pass filter,

0:disable 1:enabl

[3] low pass adjust step, 0: 1/8, 1:1/4

[6] 0: Disable AWB either at low lux or AE is

changing; 1: AWB is always ON.

[7] AWB sampling area selection

0:Center 1:whole Frame

0x1E

AD_AWB_GAIN_CTRL

0xF8

Min value: [3:0]x1/8; Max value: [7:4]x1/4

0x1F

AD_AWB_WF_CTRL

0xB0

[4:0] AWB sampling frequency in terms of frame

period: [4:0]x2;

[7:5] White pixel limit: 2^([7:5]+4)

0x34

AD_AWB_OVERFLOW*

0xFE

(254)

[7:0] AWB overflow limit, if "R,G,B" of pixel >

(overflowx2+1), this pixel will not be satisfied.

0x35

AD_AWB_BRIGHTTH*

0x00

[7:0] AWB Bright limit, if "G"/2 of pixel > Bright

limit, this pixel will be satisfied.

0x36

AD_DG_GAIN*

0x20

[7:0] digital gain, 3.5 format

When AE on, read back AE`s Digital Gain

0x37

AD_WB_RED*

0x70

[7:0] white balance red gain, 2.6 format

0x38

AD_WB_GREEN*

0x80

[7:0] white balance green gain, 2.6 format

0x39

AD_WB_BLUE*

0x90

[7:0] white balance blue gain, 2.6 format

Auto exposure control parameters

0x3A

AD_AE_CTRL*

0xF7

[0] 0:disable AE, 1:enable AE

[1] 0:disable Digital Gain compensation, 1:enable

Digital Gain compensation

[2] 0:disable Anti-Flicker, 1:enable Anti-Flicker

[3] ET_fast control, 0:ET search start from former

ET, 1:ET search start from 524

[7:4] x2: The image change frame number

tolerance

0x3B

AD_AETARGET

0x38

(56)

[7:0] AE Y target, Y=(2R/8+5G/8+B/8)*1/2

0x3C

AD_AETOLE

0x08

[7:0] AE Y change tolerance

0x3D

0x3E

AD_BLL

AD_BLH

0xC0

[10:0] bright pixel number limit,10% of sampling

pixel number:2040 ,if the bright pixel number >

limit, this frame is over exposed, AE target is

reduced automatically by 10

0x40

AD_AEGAIN_CTRL

0x78

Digital gain limit

[3:0] x1/8: min digital gain limit

[7:4] x1/2 max digital gain limit

0x43

AD_AESTEP

0xBF

AE adjust step ratio to expected step

[2:0]: 1/2^[2:0]: the ratio for ET increase step;

min step is (1/32)

[5:3:] 1/2^[5:3]: the ratio for ET decrease step;

min step is (1/32)

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