OV8610/OV8110
SINGLE IC CMOS VGA DIGITAL CAMERAS
OmniVision Technologies, Inc. 930 Thompson Place Sunnyvale, CA 94085 U.S.A.
Tel: (408) 733-3030 Fax: (408) 733-3061
e-mail: info@ovt.com
Website: http://www.ovt.com
Version 1.3, August 27, 2001
Page 20
Sub-
address
(hex)
Register
Default
(hex)
Read/
Write
Descriptions
1A
VEND
92
RW
Vertical line end
VE[7:0] – selects the ending row of vertical window, in full resolution mode,
each LSB represents 2 scan line in one field for Interlaced Scan Mode, 4
scan line in one frame for Progressive Scan Mode. In QSVGA mode, each
LSB represents 1 scan line in one field for interlaced Mode, 2 scan line in one
frame for Progressive Scan Mode. See window description below. Min. is
[03], max. is [98] and should larger than VS[7:0].
1B
PSHFT
00
RW
Pixel shift
PS[7:0] – to provide a way to fine tune the output timing of the pixel data
relative to that of HREF, it physically shifts the video data output time late in
unit of pixel clock. This function is different from changing the size of the
window as defined by HS[7:0] and HE[7:0] in registers 17 and 18. It just
delays the output pixels relative tp HREF and does not change the window
size. The highest number is “FF” and the maximum shift number is delay 256
pixels.
1C
MIDH
7F
R
Manufacture ID byte: High
MIDH[7:0] – read only, always returns “7F” as manufacturer’s ID no.
1D
MIDL
A2
R
Manufacture ID byte: Low
MIDL[7:0] – read only, always returns “A2” as manufacturer’s ID no.
1E-1F
Rsvd 1E-1F
××
RW
Reserved
20
COME
00
RW
Common control E
COME[7] – Reserved
COME[6] – Enables Field/Frame luminance average value calculations. Value
is stored in Reg. [7C], AVG [7:0].
COME[5] – PCLK output option. “1” enables PCLK output during Sleep Mode.
“0” disables PCLK during Sleep Mode.
COME[4] – “1” Aperture correction enable. Correction strength and threshold
value will be decided by COMF[7] ~ COMF[4].
COME[3] – AWB smart mode enable. 1 – do not count pixels that their
luminance level are not in the range defined in register [66]. 0 - count all
pixels to get AWB result. Valid only when COMB[0]=1 and COMA[2]=1.
COME[2] – Aperture correction mode selection. “1” - Correction only when
luminance average level larger than preset level. “0” – Correction always
same in whole range luminance.
COME[1] – AWB fast/slow mode selection. “1” - AWB is always fast mode, that
is register [01] and [02] is changed every field. “0” AWB is slow mode, [01]
and [02] change every 16/ 64 field decided by COMK[1]. When AWB enable,
COMA[2]=1, AWB is working as fast mode until it reaches stable, than as
slow mode.
COME[0] – Digital output driver capability increase selection: “1” Double digital
output driver current; “0” low output driver current status.
Note: COME[3] and COME[1] are not programmable on the OV8110 image
sensor.
21
YOFF
80
RW
Y channel offset adjustment
YOFF[7] – Offset adjustment direction 0 - Add Y[6:0]; 1 -Subtract Y[6:0].
YOFF[6:0] –Y channel digital output offset adjustment. Range: +127 ~ -127. If
COMG[2]=0, this register will be updated by internal circuit. Write a value to
this register through SCCB has no effect. COMG[2]=1, Y channel offset
adjustment will use the stored value which can be changed through SCCB.
This register has no effect to ADC output data if COMF[1]=0. If output RGB
raw data, this register will adjust G channel data.
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