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參數(shù)資料
| 型號(hào)： | LM9830 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | LM9830 36-Bit Color Document Scanner |
| 中文描述： | LM9830 36位彩色文件掃描儀 |
| 文件頁數(shù)： | 19/45頁 |
| 文件大?。?/td> | 566K |
| 代理商： | LM9830 |
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DIGITAL PIXEL RATE OFFSET AND GAIN SETTINGS
3E
Multiplier Gain Range
Smaller gain ranges provide finer control.
Larger gain ranges correct for larger shading
errors.
0 0 1.5:1 (33%)
0 1 2.0:1 (50%)
1 0 3.0:1 (66%)
1 1 Bypass Multiplier
6 bits offset/10 bits gain
8 bits offset/8 bits gain
Configuration Register 3F (Fixed)
External SRAM
Configuration Register 40 and 41 (Fixed)
External SRAM
Fixed Offset to use for calibration - 2MSBs are
assumed to be 0 if using 6 bit offset format
n n Fixed Gain to use for calibration - 2LSBs are assumed
to be 0 if using 8 bit gain format
n n n n n n n n
Offset/Gain data format
0
1
Multiplier Coefficient Source
0
1
Offset Coefficient Source
0
1
3F
Fixed Offset Coefficient
n n n n n n n n
40
41
Fixed Multiplier Coefficient - MSB
Fixed Multiplier Coefficient - LSB
PARALLEL PORT SETTINGS
42
Communication Mode
(for reading data from any of the LM9830’s
registers)
Note: This register must be set
appropriately before data can be read
from the LM9830!
Parallel Port Output Driver Current
(I
OL
and I
OH
can be used to calculate rise
and fall times into the load capacitance:
rise/fall time approximately equals 5V*C/i)
0 8 bit Bidirectional/EPP
1 4 bit Nibble
0 0
0 1
1 0
1 1
I
OL
= 5mA, I
OH
= -6mA
I
OL
= 7mA, I
OH
= -9mA
I
OL
= 9mA, I
OH
= -12mA
I
OL
= 15mA, I
OH
= -21mA
EXTERNAL SRAM SETTINGS
43
External SRAM Size
0 0 64 kbytes (not recommended for 600dpi scanners)
0 1 128 kbytes
1 0 256 kbytes
1 1 N/A
I
OL
= 3.5mA, I
OH
= -4mA
I
OL
= 6mA, I
OH
= -7.5mA
I
OL
= 12mA, I
OH
= -17mA
I
OL
= 21mA, I
OH
= -32mA
SRAM Interface Output Driver Current
(I
OL
and I
OH
can be used to calculate rise
and fall times into the load capacitance:
rise/fall time approximately equals 5V*C/i)
SRAM Bandwidth (8 Bit Data Mode)
8 slot mode should always be used to
maximize performance. If the external
SRAM is to slow to meet the t
RD SETUP
requirement, the slower 4 SRAM
accesses/ADC clock mode may be used.
Scanning Duplex (10/12 bit Data Mode)
Full Duplex mode should always be used to
maximize scan speed. If the external SRAM
is to slow to meet the t
RD SETUP
requirement,
the slower Half Duplex mode may be used.
0 0
0 1
1 0
1 1
0
4 SRAM accesses/ADC clock
1
8 SRAM accesses/ADC clock
(f
MCLK
must be 25MHz or lower)
0
Full Duplex- Can transmit data while scanning
(f
MCLK
must be 25MHz or lower)
1
Half Duplex - Can only transmit data when buffer is full
or scan has been stopped
Address
Function
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
Value
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM9830VJD | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 RoHS:否 制造商:Texas Instruments 輸入信號(hào)類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 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 |
| LM9830VJD/NOPB | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 RoHS:否 制造商:Texas Instruments 輸入信號(hào)類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 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 |
| LM9830VJDX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM9830 36-Bit Color Document Scanner |
| LM9831 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM9831 42-Bit Color, 1200dpi USB Image Scanner |
| LM9831CCVJD | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LM9831 42-Bit Color, 1200dpi USB Image Scanner |
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