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參數(shù)資料

型號：	LM9831
廠商：	National Semiconductor Corporation
英文描述：	LM9831 42-Bit Color, 1200dpi USB Image Scanner
中文描述：	LM9831 42位彩色，1200dpi的USB圖像掃描儀
文件頁數(shù)：	14/41頁
文件大?。?/td>	320K
代理商：	LM9831

www.national.com

SENSOR PIXEL CONFIGURATION

Optical Black Pixels Start

Optical Black Pixels End

n n n n n n n n n pixels (0 - 255)

Active Pixels Start - MSB

n n n n n n n pixels (0 - 16383)

Set to the same value as register

Data Pixels Start

n n n n n n n n

n n n n n nThis selects the pixel count at which the current line is

ended and the next line begins. This determines the

integration time of one line.

Active Pixels Start - LSB

Line End - MSB

Line End - LSB

n n n n n n n n

PIXEL DATA RANGE TO PROCESS

Data Pixels Start - MSB

n n n n n n

n pixels (

Active Pixels Start

- 16383)

This selects the start of the range of pixels transmitted

to the PC and determines the pixel location where

offset and shading correction begins (pixel 0 in the

DataPort). This value must be >=

Active Pixels Start

n n n n n n n pixels (

Data Pixels Start

- [

Line End

- 20])

This selects the end of the range of pixels transmitted

to the PC. This value must be <= [

Line End

- 20]

Data Pixels Start - LSB

n n n n n n n n

Data Pixels End - MSB

Data Pixels End - LSB

n n n n n n n n

COLOR MODE SETTINGS

AFE Operation

3 Channel or 1 Channel

0 0 0 3 Channel Pixel Rate Color

0 0 1 3 Channel Line Rate Color

1 0 0 1 Channel Grayscale

1 0 1 1 Channel Color

Red Channel

Green Channel

Blue Channel

N/A

1st TR pulse position (inside 1 high)

2nd TR pulse position (inside 1 low)

1st TR pulse position (inside 1 high)

2nd TR pulse position (inside 1 low)

1st TR pulse position (inside 1 high)

2nd TR pulse position (inside 1 low)

0 0 Do not drop any TR

RED

pulses

0 1 Drop 1 TR

RED

pulse (double integration time)

1 0 Drop 2 TR

RED

pulses (triple integration time)

1 1 N/A

0 0

Do not drop any TR

GREEN

pulses

0 1

Drop 1 TR

GREEN

pulse (double integration time)

1 0

Drop 2 TR

GREEN

pulses (triple integration time)

1 1

N/A

Do not drop any TR

BLUE

pulses

Drop 1 TR

BLUE

pulse (double integration time)

Drop 2 TR

BLUE

pulses (triple integration time)

N/A

Normal operation

Outputs single TR pulse on TR1, TR2, and CP2 pins

1 Channel Grayscale Input Source

(1 Channel Color always uses the

Blue Channel as the input)

0 0

0 1

1 0

1 1

RED

(=TR1) position