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OV6620 Datasheet(Fiches technique) 29 Page - List of Unclassifed Manufacturers

Numéro de pièce OV6620
Description  SINGLE-CHIP CMOS CIF COLOR DIGITAL CAMERA
Télécharger  31 Pages
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Fabricant  ETC [List of Unclassifed Manufacturers]
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 29 page
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14 May 1999
Version 1.11
29
OV6620/OV6120
SINGLE IC CMOS COLOR AND B/W DIGITAL CAMERAS
OMNIVISION TECHNOLOGIES, Inc.
Advanced Information
Preliminary
26
COMF
B0
RW
Common Control F
COMF[7:6] - Second aperture correction threshold selection.
[00] - Difference of neighbor pixel luminance is larger than 8 mV, correction on.
[01] - 16 mV.
[10] - 32 mV.
[11] - 64 mV.
COMF[5:4] - Second aperture correction strength selection.
[00] and [01] - Strength is 50% of difference of neighbor pixel luminance.
[10] - 100%.
[11] - 200%.
COMF[3] - UV BLC swap. “1” swap; “0” no swap.
COMF[2] - Digital data MSB/LSB swap. “1” LSB->Bit7, MSB->Bit0; “0” normal.
COMF[1] - “1” A/D Black level calibration enable. “0” Disable A/D BLC.
COMF[0] - “1” Output first 4 line black level before valid data output. HREF number will
increase 4 relatively. “0” no black level output.
27
COMG
A0
RW
Common Control G
COMG[7] - reserved
COMG[6] - reserved.
COMG[5] - Select CKOUT pin output V flag. 1 - CKOUT output V flag signal. CKOUT=1,
means related UV channel output V component (or Red component), CKOUT=0 pointed to
U component (or Blue component). 0 - CKOUT output buffered XCLK2
COMG[4] - reserved.
COMG[3] - reserved
COMG[2] - “1” A/D offset adjustment manually mode enable: 1 - A/D data will be add/substrate
a value defined by register [21] and [22], which content is written by I2C. 0 - A/D data will be
added/substrate a value defined by register [21] and [22], which is updated by internal
circuit.
COMG[1] - Digital output full range selection. OV6620 output data value range is [10] - [F0], if
COMG[1] -1, range change to [01] - [FE] with signal overshoot and undershoot level.
COMG[0] - reserved.
28
COMH
01
RW
Common Control H
COMH[7]: - “1” selects One-Line RGB raw data output format, “0” selects normal two-line RGB
raw data output, effective only in Progressive Scan mode.
COMH[6]: - “1” enable Black/White mode. When OV6620 working as BW camera, its vertical
resolution will be higher than color mode. At this mode, can’t set OV6620 working at 8 bit
output mode. OV6620 output data YUV/RGB from Y port. UV port will be tri-state. COMB[5]
and COMB[4] will be set to “0”. “0” normal color mode.
COMH[5]: - reserved.
COMH[4]: - Freeze AEC/AGC value, effective only when COMB0=1. “1” - register [00] and [10]
will not be updated and hold latest value. “0” - AEC/AGC normal working status.
COMH[3]: - AGC disable. 1 - when COMB[0]=1 and COMA[5]=1, internal circuit will not update
register [00], register [00] will kept latest updated value before COMH[3]=1. 0 - when
COMB0=1 and COMA[5]=1, register [00] will be updated by internal algorithm.
COMH[2]: - RGB raw data output YG format: 1 - Y channel G, UV channel B R; 0 - Y channel:
G R G R..., UV channel B G B G....
COMH[1]: - Gain control bit. “1” Double PreAmp gain to 12dB. “0” PreAmp gain is 6dB.
COMH[0]: - High gain mode. “1” - AGC maximum gain is 24dB. AGC step is 1/8. “0” AGE
maximum gain is 18dB, AGC step is 1/16. Only effective when COMB[0]=1, COMA[5]=1 and
COMH[3]=0.
29
COMI
00
RW
Common Control I
COMI[7]: - AEC disable. “1” If COMB[0]=1, AEC stop and register [10] value will be held at last
AEC value and not be updated by internal circuit. “0” - if COMB[0]=1, register [10] value will
be updated by internal circuit
COMI[6]: - Slave mode selection. “1” slave mode, use external Sync and Vsync; “0” master
mode
COMI[5]: - reserved
COMI[4]: - reserved
COMI[3]: - Central 1/4 image area rather whole image used to calculate AEC/AGC. “0” use
whole image area to calculate AEC/AGC.
COMI[2]: - reserved
COMI[1:0] - Version flag. For Version A, value is [00], these two bits can only be read.
2A
FRARH
84
RW
Frame Rate Adjust High
FRARH[7] - Frame Rate adjustment enable bit. “1” Enable.
FRARH[6] - reserved
FRARH[5] - Highest 1bit of frame rate adjust control byte. see explanation below.
FRARH[4] - reserved
FRARH[3] - Y channel brightness adjustment enable. When COMF[2]=1 active.
FRARH[2] - reserved
FRARH[1] - “1” When in Frame exposure mode, only One frame data output.
FRARH[0] - reserved
Subad-
dress
(hex)
Register
Default
(hex)
Read/
Write
Descriptions




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