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參數資料
| 型號： | LM9833 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | LM9833 48-Bit Color, 1200dpi USB Image Scanner |
| 中文描述： | LM9833 48位彩色，1200dpi的USB圖像掃描儀 |
| 文件頁數： | 11/42頁 |
| 文件大小： | 547K |
| 代理商： | LM9833 |
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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 LM9833’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.
Soft Reset
Write a 1 then a 0 to reset the LM9833’s
state machines.
Warning: A Reset will stop DRAM refresh.
0
Normal Operation.
1
Low Power Standby Mode.
0
Normal Operation.
1
Resets the LM9833. See section
10.2 Soft Reset
for
instructions on using this bit.
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
Register Listing
(Continued)
L
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM9833B-F WAF | 制造商:Texas Instruments 功能描述: |
| LM9833CCVJD | 制造商:Texas Instruments 功能描述:USB Image Scanner 100-Pin TQFP |
| LM9833CCVJD NOPB | 制造商:Texas Instruments 功能描述:Bulk |
| LM9833CCVJD/NOPB | 功能描述:視頻模擬/數字化轉換器集成電路 RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉換器數量:1 ADC 輸入端數量:4 轉換速率:3 Gbps 分辨率:8 bit 結構: 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| LM98501 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:10-Bit, 27 MSPS Camera Signal Processor |
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