ov7620 OmniVision Technologies, Inc, ov7620 Datasheet - Page 43

• 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 [2A] - rw: Frame Rate Adjust Register 1
Register [2B] - rw: Frame Rate Adjust Register 2
Register [2C] - rw: Black Expanding Register
Register [2D] - rw: Common Control J
Bits
Default
Bits
Default
Bits
Default
Bits
Default
EHSH7 - Frame Rate adjustment enable bit. “1” Enable.
EHSH<6:5> - Highest 2 bit of frame rate adjust control byte. See explanation in register [2B].
EHSH4 - “1” - UV component delay 2 pixel. “ 0” no 2*Tp delay.
EHSH3 - Y channel brightness adjustment enable. When COMF2=1 active.
EHSH2 - For QVGA raw data format. “1” will force Y to output B G B G and UV to output G R G R
EHSH<1:0> - Reserved.
EHSL<7:0> - Lowest 8 bit of frame rate adjust control byte. Frame rate adjustment resolution is 0.12%.
EXBK<7:4> - Coarse Auto Black Level adjustment. Range is 0.08% - 1.3%
EXBK<3:0> - Fine Auto Black Level adjustment. Range is 0.08% - 1.3%.
COMJ7 - Reserved. Always set to “1”.
COMJ6 - QVGA 60 frame/s selection. “1” Only Odd field in Interlace Mode data output, “0” Odd/Even field
COMJ5 - Reserved. Always set to “0”.
COMJ4 - Auto brightness enabled.
COMJ3 - Reserved. Always set to “0”.
COMJ2 - Banding filter enable. After adjust frame rate to match indoor light frequency, this bit enable a dif-
COMJ1 - Reserved. Always set to “0”.
COMJ0 - Reserved. Always set to “1”.
EHSH7
COMJ7
EHSL7
EXBK7
0
0
1
1
Control word is 10 bit. Every count decreases frame rate by 0.12%. Range is 0.12% - 112%. If
frame rate adjustment is enabled, COME7 must be set to “0”.
data output frame rate is 30 frames/s. VGA is output at 60 frames/s in dual line mode raw data.
ferent exposure algorithm to cut light band induced by fluorescent light.
COMJ6
EHSH6
EHSL6
EXBK6
0
0
0
0
EHSH5
COMJ5
EXBK5
EHSL5
0
0
0
0
EHSH4
EHSL4
EXBK4
OMJ4
0
0
0
0
Preliminary
EHSH3
COMJ3
EXBK3
EHSL3
0
0
1
0
EHSH2
COMJ2
EHSL2
EXBK2
0
0
0
0
Company Confidential
OMNIVISION TECHNOLOGIES INC.
COMJ1
EHSH1
EHSL1
EXBK1
0
0
0
-
EHSH0
COMJ0
EXBK0
EHSL0
0
0
0
1