
OV8610/OV8110
Sub-
address
(hex)
70
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 25
Register
Default
(hex)
Read/
Write
Descriptions
COMK
80
RW
Common mode control K
COMK[7] – HREF edge latched by PCLK falling edge.
COMK[6] – Output port drive current 2x larger option.
COMK[5] – Aperture correction option.
COMK[4] – ZV port vertical timing selection. “1” VSYNC output ZV port vertical
sync signal. “0” normal TV vertical sync signal.
COMK[3] – Reserved.
COMK[2] – Double Aperture correction strength.
COMK[1] – 4x stable time less when in AWB slow mode.
COMK[0] – Disable output pin internal 100K pull down resistor
Common control J
COMJ[7] – Auto brightness update rate selection. “1” slow, “0” fast.
COMJ[6] – PCLK output gated by HREF.
COMJ[5] – Change HREF output port to CHSYNC.
COMJ[4] – Change CHSYNC output port to HREF.
COMJ[3:2] – Highest 2 bit for HSYNC rising edge shift control. See register
[72].
COMJ[1:0] – Highest 2 bit for HSYNC falling edge shift control. See register
[73].
Horizontal SYNC rising edge shift
COMJ[3:2], HSDY[7:0], HSYNC rising edge shift control. Range 000 to 3FF,
step 1 pixel.
Horizontal SYNC falling edge shift
COMJ[1:0]&HEDY[7:0], HSYNC falling edge shift control. Range 000 to 3FF.
Common mode control M
COMM[7] – Enable UV smart AWB threshold controlled by COMG[5].
COMM[6:5] – AGC maximum gain boost control. “00” – 6db, “01” – 12db, “10” –
6db, “11” – 18db
COMM[4:0] – Reserved.
Common mode control N
COMN[7] – AWB control mode selection. “1” – AWB stop when field/frame
average level less than threshold. “0” always do AWB.
COMN[6:4] – Reserved for internal test mode.
COMN[3] – Drop one field/frame when exposure line change is bigger than a
fixed number.
COMN[2] – Enable exposure go down to less than 1/120” or 1/60” in smooth
AEC mode.
COMN[1:0] – Reserved.
Common mode control O
COMO[7] – Output main clock at FODD pin.
COMO[6] – Reserved.
COMO[5] – Software power down mode.
COMO[4] – ITU-656 timing.
COMO[3] – Reserved.
COMO[2] – Tri-state all timing output except data line.
COMO[1] – SCCB writing bit synchronized by VSYNC.
COMO[0] – Reserved.
Reserved
Y/G ADC offset
YBAS[7:0] – Fixed offset to final Y/G data, range –128 to 128
U/B ADC offset
UBAS[7:0] – Fixed offset to final U/B data, range –128 to 128
V/R ADC offset
VBAS[7:0] – Fixed offset to final V/R data, range –128 to 128.
71
COMJ
00
RW
72
HSDY
14
RW
73
HEDY
54
RW
74
COMM
20
RW
75
COMN
0E
RW
76
COMO
00
RW
77
78
Rvsd 77
YBAS
××
80
-
RW
79
UBAS
80
RW
7A
VBAS
80
RW