ICM205B Datasheet, PDF(9/41 Page) List of Unclassifed Manufacturers – VGA/QVGA CMOS image sensor with digital YUV output

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ICM205B Datasheet, PDF (9/41 Pages) List of Unclassifed Manufacturers – VGA/QVGA CMOS image sensor with digital YUV output

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ICM205B: VGA CMOS sensor with digital YUV output

Data Sheet V1.3, Oct. 2002

Auto White Balancing

Due to the different transparency and the overlapping spectrum response of the R, G, and B filters, the

interpolated color may not be balanced. The Auto White Balancing performs the White Balance function

automatically . The following register are used to control the AWB function:

0x33 (AD_AWB_CTRL, Default = 3)

0 : Disable AWB

1 : Enable AWB with R,G,B range limited

3 : Enable AWB with no range limited

0x34 (AD_AWB_OVERFLOW, Default = 255)

Set the overflow value of the sampling pixel, if the sampling data is larger than

AD_AWB_OVERFLOW, then it will not be used for AWB processing. The default value 255 means

there is no limit on sampling data.

0x35 (AD_AWB_BRIGHT, Default = 0)

Set the minimum bright value of the sampling pixel, if the sampling data is less than

AD_AWB_BRIGHT, then it will not be used for AWB processing. The default value 0 means there is

no limit on sampling data.

When AWB function is disabled, the following registers are used to adjust the White Balance manually:

0x37 (AD_WB_RED, Default = 0x80 )

Set the RED Gain manually.

0x38 (AD_WB_GREEN, Default = 0x80)

Set the GREEN Gain manually.

0x39 (AD_WB_BLUE, Default = 0x80)

Set the BLUE Gain manually.

Sharpening

The following register are used to control the Sharpening function:

0x30 (AD_SHARP_CTRL, Default =9)

0 : Disable Sharpening.

8 : Sharpen Weight = 0.5 (light Sharpening)

9 : Sharpen Weight = 1 (default)

a : Sharpen Weight = 2

b : Sharpen Weight = 3

c : Sharpen Weight = 4

d : Sharpen Weight = 5

e : Sharpen Weight = 6

f : Sharpen Weight = 7 (heavy Sharpening)

0x31 (AD_SHARP_HIGH,Default =0x0a)

Sharpening High Tone Threshold.

0x32 (AD_SHARP_LOW,Default = 0x05)

Sharpening Low Tone Threshold.

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page 9

10/16/2002

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