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參數(shù)資料
| 型號： | OV6630 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | SINGLE-CHIP CMOS CIF COLOR DIGITAL CAMERA |
| 中文描述： | 單芯片CMOS到岸價格彩色數(shù)碼攝像機(jī) |
| 文件頁數(shù)： | 11/29頁 |
| 文件大?。?/td> | 206K |
| 代理商： | OV6630 |
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S INGLE IC CMOS COLOR AND B/W DIGIT AL CAMERAS
March 4, 2000
Version 1.0
11
Default mode:
-
1st HREF Y channel output unstable data, UV output B
11
G
12
B
13
G
14
···
-
2nd HREF Y channel output G
21
R
22
G
23
R
24
···
, UV output B
11
G
12
B
13
G
14
···
-
3rd HREF Y channel output G
21
R
22
G
23
R
24
···
, UV output B
31
G
23
B
33
G
34
···
-
Every line of data is output twice.
YG mode:
-
1st HREF Y and UV output unstable data.
-
2nd HREF Y channel output G
21
G
12
G
23
G
14
···
, UV output B
11
R
22
B
13
R
24
···
-
3rd HREF Y is G
21
G
32
G
23
G
34
···
, UV channel is B
31
R
22
B
33
R
24
···
-
Every line data output twice.
One line mode:
-
1st HREF Y channel output B
11
G
12
B
13
G
14
···
-
2nd HREF Y channel output G
21
R
22
G
23
R
24
···
-
UV channel tri-state.
2. 8-bit Format (Total 292 HREFs)
-
1st HREF Y channel output unstable data.
-
2nd HREF Y channel output B
11
G
21
R
22
G
12
···
-
3rd HREF Y channel output B
31
G
21
R
22
G
32
···
-
PCLK timing is doubled and PCLK rising edge latch data bus. UV channel tri-state. Every line data output twice.
3. 4-bit Nibble Mode Output Format
-
Uses higher 4 bits of Y port (Y[7:4]) as output port.
-
Supports YCrCb/RGB data, ITU-601/ITU-656 timing, Color/B&W.
-
Output sequence: High order 4 bits followed by lower order 4 bits
Y0
H
Y0
L
Y1
H
Y1
L
···
U0
H
U0
L
V0
H
V0
L
···
For B/W or one-line RGB raw data, the output data clock speed is doubled. For color YUV, output clock is four times that of the 16-bit
output data. In color mode, sensor must be set to 8-bit mode, and the nibble timing, clock divided by 2.
Output sequence: U0
H
U0
L
Y0
H
Y0
L
V0
H
V0
L
Y1
H
Y1
L
···
1.2.7
The OV6630/OV6130 can be programmed to operate in slave mode
(COMI[6] = 1, default is master mode). HSYNC and VSYNC output
signals are provided.
When used as a slave device, the external master must provide the
following clocks to OV6630/OV6130 imager:
1. System clock CLK to XCLK1 pin
2. Horizontal sync, HSYNC, to CHSYNC pin, positive assertion
3. Vertical frame sync, VSYNC, to VSYNC pin, positive assertion
In slave mode, the OV6630/OV6130 tri-states CHSYNC (pin 42) and
VSYNC (pin 16) output pins, and used as input pins. To synchronize
multiple devices, OV6630/OV6130 uses external system clock, CLK,
to synchronize external horizontal sync, HSYNC, which is then used
to synchronize external vertical frame sync, VSYNC. See Figure 6.
Slave Mode External Sync Timing for timing considerations.
Slave Mode Operation
1.2.8
OV6630/OV6130 supports frame. FREX (pin 4) is asserted by an
external master device to set exposure time. The pixel array is quickly
pre-charged when FREX is set to “1”. OV6630/OV6130 captures the
image in the time period when FREX remains high. The video data
stream is delivered to output port in a line-by-line manner after FREX
switches to “0”.
Frame Exposure Mode
It should be noted that FREX must remain high long enough to ensure
the entire image array has been pre-charged.
When data is being output from OV6630/OV6130, care must be taken
so as not to expose the image array to light. This may affect the
integrity of the image data captured. A mechanical shutter synchro-
nized with the frame exposure rate can be used to minimize this
situation. The timing of frame exposure is shown in Figure 7. Frame
Exposure Timing below.
1.2.9
OV6630/OV6130 includes a RESET pin (pin 2) that forces a
complete hardware reset when it is pulled high (VCC).
OV6630/OV6130 clears all registers and resets to their default values
when a hardware reset occurs. Reset can also be initiated through the
I
2
C interface.
Reset
1.2.10
Two methods are available to place OV6630/OV6130 into power-
down mode: hardware power down and I
C software power down.
To initiate hardware power down, the PWDN pin (pin 9) must be tied
to high (+3.3VDC). When this occurs, OV6630/OV6130 internal
device clock is halted and all internal counters are reset. The current
draw is less than 10
μ
A in this standby mode.
Power Down Mode
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