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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： | 17/42頁 |
| 文件大小： | 547K |
| 代理商： | LM9833 |
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STEPPER MOTOR CONTROL SETTINGS
43
n (Line Skipping)
Part of the “n out of m” function, consisting of
registers 43, 44, and 54 (bits 3-7).
t
t
t
t
t
t
t
t
n lines saved in DRAM for every m lines (register 44)
scanned, function bypassed if register value = 0.
n (lines saved per m lines scanned) = 256 - t
t = 256 - n
If t = 0 then function is bypassed.
n lines (register 43) saved in DRAM for every m lines
scanned. m = 1 to 255.
If m = 0 then function is bypassed.
0 Full Step Mode
1 Microstepping Mode
1 Phase - No microstepping, just kickstart/stop
functions
2 Phases - necessary for microstepping
Positive (A/B/A/B Output high = winding energized)
Negative (A/B/A/B output low = winding energized)
WARNING: When idle, this setting leaves the motor
energized for unipolar motors, and will destroy bipolar
motor drivers. Keep this bit set to a 0.
Positive (A/B/A/B Output high = winding energized)
Negative (A/B/A/B output low = winding energized)
WARNING: When idle, this setting leaves the motor
energized for unipolar motors, and will destroy bipolar
motor drivers. Keep this bit set to a 0.
A, B, A, and B output pins in Tri-State
A, B, A, and B output pins active
Default polarity
Reverse Polarity
Traditional Operation
Fullstep during fastfeed at start of scan
n n n n n n n n The step size of one microstep while scanning, in
units of pixel periods (minimum 2)
n n n n n n n n
n n n n n n The step size of one microstep while fast feeding, in
units of pixel periods (minimum 2)
n n n n n n n n
n n n n n n n When scan starts, paper is fed forward n full steps (0 -
32767) at highest speed. For “zooming” in flatbeds
n n n n n n n n
n n n n n n Counts n (0-16383) full steps. See register 58, bit 5
for more information.
n n n n n n n n
Pause scan when buffer is n*2 (16 x 256k) or
n*8 (16x1M) kbytes full
Resume scan when buffer is n*2 (16 x 256k) or
n*8 (16x1M) kbytes full
n n n n n n n n n (0-255) full steps (0 = do not reverse)
n n
n (0,1, 2, or 8) full step time units pause while stopped
n n
n (0,1, 2, or 8) full steps at 25% speed
n n
n (0,1, 2, or 8) full steps at 50% speed
n n 18 bit word used to calculate when motor resumes
after reversing and stopping. 1 < n < 262143. 2 bits in
register 51 are the most significant bits of 18 bit word.
n n n n n n n n
n (0-7) lines. This only applies if the motor doesn’t
reverse (reverse steps = 0)
0
Red sensor data arrives before Green sensor
44
m (Line Skipping)
Part of the “n out of m” function, consisting of
registers 43, 44, and 54 (bits 3-7).
m m m m m m m m
45
Full/Microstepping
Current Sensing Phases
= 0 for fullstepping
= 1 for microstepping
0
1
Stepper Motor Phase A Polarity
0
1
Stepper Motor Phase B Polarity
0
1
A, B, A, and B stepper motor status
0
1
Swap A/A with B/B
(Reverses motor direction)
0
1
Fullstep During FastFeed at Start of Scan
0
1
46
47
48
49
4A
4B
4C
4D
Scanning Step Size - MSB
Scanning Step Size - LSB
Fast Feed Step Size - MSB
Fast Feed Step Size - LSB
Fullsteps to Skip at Start of Scan - MSB
Fullsteps to Skip at Start of Scan - LSB
Step Counter - MSB
Step Counter - LSB
4E
Pause scanning, stop/reverse motor
n n n n n n n n
4F
Resume scanning, start motor
n n n n n n n n
50
Full steps to reverse when buffer is full
Acceleration Profile (stopped)
Acceleration Profile (25%)
Acceleration Profile (50%)
Default Phase Difference - High Byte
Default Phase Difference - Mid Byte
Default Phase Difference - Low Byte
Lines to Process After Pause/
Lines to Discard after Resume
Line Skipping Phase
Part of the “n out of m” function, consisting of
registers 43, 44, and 54 (bits 3-7).
Line Skipping Color Phase Delay
Part of the “n out of m” function, consisting of
registers 43, 44, and 54 (bits 3-7).
51
52
53
n n n n n n n n
54
n n n
1
Blue sensor data arrives before Green sensor
n n n n
n lines, n = 0-15
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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