ov7620 OmniVision Technologies, Inc, ov7620 Datasheet - Page 46

• Manufacturer Part Number: ov7620
• Description: Single-chip Cmos Vga Color Digital Camera
• Manufacturer: OmniVision Technologies, Inc

OV7620/OV7120 Product Specifications - Rev. 1.2 (7/10/01)
Register 66- rw: AWB Process Control
Register 67- rw: Color Space Selection
Register 68- rw: Signal Process Control D
Bits
Default
Bits
Default
Bits
Default
White balance limiting function - YUV matrix control.
Register 74:7 must be enabled for AWB process control.
AWBC<7:6>: Smart AWB ignores RGB raw data pixel values above (00):70%, (01): 80%, (10): 90%,
AWBC<5:4>: Smart AWB ignores RGB raw data pixel values below (00):10%, (01) 20%, (10) 30%,
AWBC<3:2>: U threshold level selection if use U/V as white balance feedback
00: (-10% ~ 10%); 01: (-20% ~ 20%); 10: (-30% ~ 30%); 11: (-40% ~ 40%)
AWBC<1:0>: V threshold level selection if use U/V as white balance feedback
00: (-10% ~ 10%); 01: (-20% ~ 20%); 10: (-30% ~ 30%); 11: (-40% ~ 40%)
YUV<7:6>: UV coefficient selection (U/V is output and u/v is input)
• [00]: YUV
• [01]: Analog YUV
• [10]: CCIR 601 YCrCb
• [11]: PAL YUV
YUV5: U/V signal delay 2 pixel selection
YUV4: U/V signal with 3 point chroma average(2 pixel delay accordingly)
YUV<3:2>: Y signal delay selection: (00) - 0; (01) - 1; (10) - 2; (11) - 3 pixels
YUV1: Auto saturation control (decreases color noise) enable.
YUV0: Auto saturation control range selection: 0 - 1.5x; 1 - 1x.
SPCD<7:5>: AEC/AGC Brighness Target level selection.
000 - 10%; 001 - 30%; 010 - 50%; 011 - 70%; 100 - 80%; 101 - 90%; 110 - 100%; 111 - 110%.
SPCD4: Reserved. Always set to “0”.
SPCD<3:2>: Anti-alias threshold: 11 lowest threshold; 01, 10 midrange threshold; 00 highest threshold.
SPCD<1:0>: Anti-alias magnitude: 00 - low strength; 01, 10 mid strength; 11:high strength.
AWBC7
SPCD7
YUV7
0
0
1
(11):100%.
(11) 40%.
AWBC6
SPCD6
YUV6
1
0
1
AWBC5
SPCD5
YUV5
0
0
0
AWBC4
SPCD4
YUV4
1
1
0
Preliminary
AWBC3
SPCD3
YUV3
0
1
1
AWBC2
SPCD2
YUV2
1
0
1
Company Confidential
OMNIVISION TECHNOLOGIES INC.
AWBC1
SPCD1
YUV1
0
1
0
AWBC0
SPCD0
YUV0
1
0
0