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參數(shù)資料
| 型號(hào)： | 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)： | 11/41頁 |
| 文件大?。?/td> | 320K |
| 代理商： | LM9831 |
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COMMAND REGISTER
07
Command Register
This register is used to start and end a scan.
It is also used to home the sensor in a
flatbed scanner or eject the image in a
sheetfed scanner.
Note: Always make sure
the Command Register is in the idle state
(=0) before issuing a new command.
0 0 0
Idle - Stops motor (A, B, A, B = 0),
completes current line of data (if scanning).
Note: CCD/CIS clocks continue clocking.
High Speed Forward - Moves motor forward at a
speed determined by the Fast Feed Step Size
(registers 48 and 49).
High Speed Reverse - Moves motor backward at a
speed determined by the Fast Feed Step Size
(registers 48 and 49).
Start Scan - Resets the LM9831’s data pointers and
starts an image scan.
Programmed High Speed Forward - Moves motor
forward at a speed determined by the Fast Feed Step
Size (registers 48 and 49) for the number of lines
programmed in registers 4A and 4B.
Programmed High Speed Reverse - Moves motor
backward at a speed determined by the Fast Feed
Step Size (registers 48 and 49) for the number of lines
programmed in registers 4A and 4B.
0 0 1
0 1 0
0 1 1
1 0 1
1 1 0
Standby
When this bit is set the entire chip enters a
low power state.
Warning: A Standby command will stop
DRAM refresh.
Reset
Write a 1 then a 0 to reset the LM9831’s
state machines.
Warning: A Reset will stop DRAM refresh.
0
Normal Operation
1
Low Power Standby Mode
0
Normal Operation
1
Resets the LM9831
MASTER CLOCK DIVIDER
08
MCLK Divider
This register sets the master clock frequency
for the entire scanner.
f
MCLK
= 48MHz/MCLK_Divider
f
ADC
= f
MCLK
/8
0 0 0 0 0 0 ÷1.0
0 0 0 0 0 1 ÷1.5
0 0 0 1 1 0 ÷4
a a a a a a ÷ ((aaaaaa/2)+1)
1 1 1 1 1 0 ÷32.0
1 1 1 1 1 1 ÷32.5
Address
Function
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
Value
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM9831CCVJDX | LM9831 42-Bit Color, 1200dpi USB Image Scanner |
| LM9832CCVJD | LM9832 42-Bit Color, 1200dpi USB Image Scanner |
| LM9832 | LM9832 42-Bit Color, 1200dpi USB Image Scanner |
| LM9833CCVJD | LM9833 48-Bit Color, 1200dpi USB Image Scanner |
| LM9833 | LM9833 48-Bit Color, 1200dpi USB Image Scanner |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM9831CCVJD | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM9831 42-Bit Color, 1200dpi USB Image Scanner |
| LM9831CCVJDX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM9831 42-Bit Color, 1200dpi USB Image Scanner |
| LM9832 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM9832 42-Bit Color, 1200dpi USB Image Scanner |
| LM9832B-B WAF | 制造商:Texas Instruments 功能描述: |
| LM9832B-E WAF | 制造商:Texas Instruments 功能描述: |
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