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參數資料
| 型號： | AD9949KCPRL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 消費家電 |
| 英文描述： | 12-Bit CCD Signal Processor with Precision Timing Core |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, QCC40 |
| 封裝： | 6 X 6 MM, MO-220-VJJD-2, LFCSP-40 |
| 文件頁數： | 27/36頁 |
| 文件大小： | 707K |
| 代理商： | AD9949KCPRL |
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AD9949
Rev. B | Page 27 of 36
COLOR
STEERING
CONTROL
MUX
GAIN0
GAIN1
GAIN2
GAIN3
PxGA
PxGA STEERING
MODE
SELECTION
VD
HD
PxGA GAIN
REGISTERS
CONTROL
REGISTER
BITS D0 TO D1
SHP/SHD
VGA
CDS
0
8
4:1
2
3
Figure 29. PxGA Block Diagram
LINE0
GAIN0, GAIN1, GAIN0, GAIN1, ...
R
R
Gr
Gr
LINE1
LINE2
GAIN2, GAIN3, GAIN2, GAIN3, ...
GAIN0, GAIN1, GAIN0, GAIN1, ...
COLOR STEERING MODE:
PROGRESSIVE
R
R
Gr
Gr
Gb
B
CCD: PROGRESSIVE BAYER
Gb
B
Gb
B
Gb
B
0
Figure 30. CCD Color Filter Example—Progressive Scan
The same Bayer pattern can also be interlaced, and the
interlaced mode should be used with this type of CCD (see
Figure 31). The color steering performs the proper multiplexing
of the R, G, and B gain values (loaded into the PxGA gain
registers) and is synchronized by the user with vertical (VD)
and horizontal (HD) sync pulses. For timing information,
see Figure 34.
LINE0
GAIN0, GAIN1, GAIN0, GAIN1, ...
R
R
Gr
Gr
LINE1
LINE2
GAIN0, GAIN1, GAIN0, GAIN1, ...
GAIN0, GAIN1, GAIN0, GAIN1, ...
Gb
Gb
B
B
LINE0
GAIN2, GAIN3, GAIN2, GAIN3, ...
LINE1
LINE2
GAIN2, GAIN3, GAIN2, GAIN3, ...
GAIN2, GAIN3, GAIN2, GAIN3, ...
COLOR STEERING MODE:
INTERLACED
Gb
Gb
B
B
Gb
Gb
B
B
Gb
Gb
B
B
R
R
Gr
Gr
R
R
Gr
Gr
R
R
Gr
Gr
EVEN FIELD
ODD FIELD
CCD: INTERLACED BAYER
0
Figure 31. CCD Color Filter Example—Interlaced Readout
A third type of readout uses the Bayer pattern divided into three
different readout fields. The 3-field mode should be used with
this type of CCD (see Figure 32). The color steering performs
the proper multiplexing of the R, G, and B gain values (loaded
into the PxGA gain registers) and is synchronized by the user
with vertical (VD) and horizontal (HD) sync pulses. For timing
information, see Figure 35.
LINE0
GAIN0, GAIN1, GAIN0, GAIN1, ...
R
Gr
LINE1
LINE2
GAIN2, GAIN3, GAIN2, GAIN3, ...
GAIN0, GAIN1, GAIN0, GAIN1, ...
LINE0
GAIN2, GAIN3, GAIN2, GAIN3, ...
LINE1
LINE2
GAIN0, GAIN1, GAIN0, GAIN1, ...
GAIN2, GAIN3, GAIN2, GAIN3, ...
COLOR STEERING MODE:
THREE FIELD
Gb
B
Gb
B
R
Gr
FIRST FIELD
SECOND FIELD
CCD: 3-FIELD READOUT
LINE0
GAIN0, GAIN1, GAIN0, GAIN1, ...
R
Gr
LINE1
LINE2
GAIN2, GAIN3, GAIN2, GAIN3, ...
GAIN0, GAIN1, GAIN0, GAIN1, ...
R
Gr
THIRD FIELD
Gb
B
Gb
B
R
Gr
R
Gr
Gb
B
R
Gb
Gb
R
R
R
Gb
Gb
R
R
Gb
Gb
Gb
B
Gr
B
B
Gr
Gr
Gr
B
B
Gr
Gr
B
B
0
Figure 32. CCD Color Filter Example—Three-Field Readout
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