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OV6620 Fiches technique(PDF) 27 Page - List of Unclassifed Manufacturers

No de pièce OV6620
Description  SINGLE-CHIP CMOS CIF COLOR DIGITAL CAMERA
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OV6620 Fiches technique(HTML) 27 Page - List of Unclassifed Manufacturers

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14 May 1999
Version 1.11
27
OV6620/OV6120
SINGLE IC CMOS COLOR AND B/W DIGITAL CAMERAS
OMNIVISION TECHNOLOGIES, Inc.
Advanced Information
Preliminary
15
COMD
01
RW
Common Control D
COMD[7] - reserved bit.
COMD[6] - PCLK polarity selection. “0” OV6620 output data at PCLK falling edge and data bus
will be stable at PCLK rising edge; “1” rising edge output data and stable at PCLK falling
edge. When OV6620 work as CCIR656 format, COMB4=1, this bit is disable and should
use PCLK rising edge latch data bus.
COMD[5:1] - reserved bit.
COMD[0] - U V digital output sequence exchange control. 1 - UV UV ... for 16-bit, U Y V Y ...
for 8-bit; 0 - V U V U ... for 16Bit and V Y U Y ... for 8 Bit.
16
FSD
03
RW
Field Slot Division
FSD[7:2] - Field interval selection. Odd Even mode defined by FD[1:0]
000000 - disable digital data output, only output black reference level.
000001 - divide to 2 slots, HREF is active one in every 2 field/frame
000010 - divide to 4 slots, HREF is active one in every 4 field/frame
000100 - divide to 8 slots, HREF is active one in every 8 field/frame
001000 - divide to 16 slots, HREF is active one in every16 field/frame
010000 - divide to 32 slots, HREF is active one in every 32 field/frame
100000 - divide to 64 slots, HREF is active one in every 64field/frame
FSD[1:0]- field mode selection. Each frame consists of two fields: Odd & Even, these bits
defines the assertion of HREF in relation to the two fields.
00 - OFF mode; HREF is not asserted in both fields, one exception is the single frame
transfer operation (see the description for the register 13)
01 - ODD mode; HREF is asserted in odd field only.
10 - EVEN mode; HREF is asserted in even field only.
11 - FRAME mode; HREF is asserted in both odd field and even field. FD[7:2] useless.
17
HREFST
38
RW
Horizontal HREF Start
HS[7:0] - selects the starting point of HREF window, each LSB represents two pixels for CIF
resolution mode, one pixels for QCIF resolution mode, this value is set based on an internal
column counter, the default value corresponds to 352 horizontal window. Maximum window
size is 356. see window description below. HS[7:0] programmable range is [38]- [EB], and
should less than HE[7:0]. HS[7:0] should be programmable to value larger than or equal to
[38]. Value larger than [EC] is invalid. See window description below.
18
HREFEND
EA
RW
Horizontal HREF End
HE[7:0] - selects the ending point of HREF window, each LSB represents two pixels for full
resolution and one pixels for QCIF resolution, this value is set based on an internal column
counter, the default value corresponds to the last available pixel. The HE[7:0]
programmable range is [39] - [EC]. HE[7:0] should be larger than HS[7:0] and less than or
equal to [EC]. Value larger than [EC] is invalid. See window description below.
19
VSTRT
03
RW
Vertical Line Start
VS[7:0] - selects the starting row of vertical window, in full resolution mode, each LSB
represents 1 scan line in one frame. see window description below. Min. is [03], max. is [93]
and should less than VE[7:0].
1A
VEND
92
RW
Vertical Line End
VE[7:0]- selects the ending row of vertical window, in full resolution mode, each LSB
represents 1 scan line in one frame, see window description below. Min. is [04], max. is [94]
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 as shown in the
figure below. This function is different from changing the size of the window as is defined by
HS[7:0] & HE[7:0] in register 17&18.
Higher than default number shifts the pixel in delay(right) direction, the highest number is
“FF”. so maximum shift number is: Late: 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
Rsvrd1E
C4
R
reserved
1F
Rsvrd1F
04
R
reserved
Subad-
dress
(hex)
Register
Default
(hex)
Read/
Write
Descriptions


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