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參數(shù)資料
| 型號： | MT9V011P11ST |
| 廠商： | Micron Technology, Inc. |
| 英文描述： | 1/4-INCH VGA CMOS ACTIVE-PIXEL DIGITAL IMAGE SENSOR |
| 中文描述： | 4英寸顯卡的CMOS有源像素的數(shù)字圖像傳感器 |
| 文件頁數(shù)： | 24/33頁 |
| 文件大?。?/td> | 537K |
| 代理商： | MT9V011P11ST |
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1/4-INCH VGA CMOS ACTIVE-PIXEL
DIGITAL IMAGE SENSOR
Preliminary
09005aef80c6407f
MT9V011_external_DS_2.fm - Rev. A 8/04 EN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
24
2004 Micron Technology, Inc.
Recommdended Gain Settings
The gains for green1, blue, red, and green2 pixels
are set by registers Reg0x2B, Reg0x2C, Reg0x2D, and
Reg0x2D, respectively. Gain can also be set globally by
Reg0x35. The analog gain is set by bits[8:0] of the cor-
responding register as following:
Gain = (Bit[8] + 1) x (Bit[7] + 1) x (Bit[6:0]/32)
Digital gain is set by bits 9 and 10 of the same regis-
ters.
The analog gain circuitry (pre-ADC) is designed to
offer signal gains from 1 to 15.875.
The minimum gain of 1 (register set to 0x0020) cor-
responds to the lowest setting where the pixel signal is
guaranteed to saturate the ADC under all specified
operating conditions. Any reduction of the gain below
this value may cause the sensor to saturate at ADC out-
put values less than the maximum, under certain con-
ditions. It is recommended that this guideline be
followed at all times.
Since bits 7 and 8 of the gain registers are multipli-
cative factors for the gain settings, there are alternative
ways of achieving certain gains. Some settings offer
superior noise performance to others, while the same
overall gain. Table 9 lists the recommended gain set-
tings.
Table 9:
Recommended Gain Settings
DESIRED GAIN
RECOMMENDED SETTINGS (GAIN
REGISTERS)
CONVERSION FORMULA
(ARITHMETIC)
1.000 to 1.969
2.000 to 7.938
8.000 to 15.875
0x0020 to 0x003F
0x00A0 to 0x00FF
0x01C0 to 0x01FF
(Register value)/32
(Register value - 128)/16
(Register value - 384)/8
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