參數(shù)資料
型號(hào)： LM1270
廠商： National Semiconductor Corporation
英文描述： Hi-Brite 200 MHz I2C Compatible RGB Image Enhancer with Video Auto Sizing
中文描述： 高亮度場致200兆赫與I2C兼容的RGB視頻自動(dòng)上漿圖像增強(qiáng)
文件頁數(shù)： 22/27頁
文件大?。?/td> 1302K
代理商： LM1270
Register Descriptions
(Continued)
Bit 7:
This bit controls which source is selected for inside the window, and which source is outside.
If bit 7 = 0, input B is inside the window. (Default)
If bit 7 = 1, input B is outside the window
Emphasis Center Frequency
Register
CNT_F
Addr
0C
7
6
5
4
3
2
1
0
CENTF3
CENTF2
CENTF1
CENTF0
This is a 4 bit wide register that sets the center frequency of the emphasis filter. When the value is zero, the center frequency is
set to its minimum value.
Pixels Per Line/Prescaler
Register
PPL0
PS_PPL1
Addr
0D
0E
7
6
5
4
3
2
1
0
PPL7
AUTO
PPL6
PRESC2
PPL5
PRESC1
PPL4
PRESC0
PPL3
FRERUN
PPL2
PPL10
PPL1
PPL9
PPL0
PPL8
Bit 10–0:
Bit 14–12: Sets prescaler value for the PLL
Bit 15:
Sets the prescaler to automode. When set for automode the LM1270 automatically selects the optimum value for the
prescaler. Bits 12–14 will be the starting point for automode.
Horizontal Window Start Position
Sets the pixel per line value for the PLL and window function
Register
HW_ST0
HW_ST1
Addr
0F
10
7
6
5
4
3
2
1
0
HW_ST7
HW_ST6
HW_ST5
HW_ST4
HW_ST3
HW_ST2
HW_ST10
HW_ST1
HW_ST9
HW_ST0
HW_ST8
This is an 11 bit wide register that sets the horizontal position in number of pixels of the B select window pulse with respect to the
leading edge of the H sync pulse.
Horizontal Window Duration
Register
HW_END0
HW_END1
Addr
11
12
7
6
5
4
3
2
1
0
HW_EN7
HW_EN6
HW_EN5
HW_EN4
HW_EN3
HW_EN2
HW_EN10
HW_EN1
HW_EN9
HW_EN0
HW_EN8
This is an 11 bit wide register that sets the horizontal duration in number of pixels of the B select window pulse. If this value is
zero, the window is disabled.
Vertical Window Start Position
Register
VW_ST0
VW_ST1
Addr
13
14
7
6
5
4
3
2
1
0
VW_ST7
VW_ST6
VW_ST5
VW_ST4
VW_ST3
VW_ST2
VW_ST10
VW_ST1
VW_ST9
VW_ST0
VW_ST8
This is an 11 bit wide register that sets the vertical position in number of lines of the B select window pulse with respect to the
leading edge of the V
SYNC
pulse.
Vertical Window Duration
Register
VW_END0
VW_END1
Addr
15
16
7
6
5
4
3
2
1
0
VW_EN7
VW_EN6
VW_EN5
VW_EN4
VW_EN3
VW_EN2
VW_EN10
VW_EN1
VW_EN9
VW_EN0
VW_EN8
This is an 11 bit wide register that sets the vertical duration of the B select window pulse in number of lines. If this value is zero,
the window is disabled.
Horizontal Front Porch Duration
Register
H_FP0
H_FP1
Addr
17
18
7
6
5
4
3
2
1
0
HFP7
HFP6
HFP5
HFP4
HFP3
HFP2
HFP10
HFP1
HFP9
HFP0
HFP8
This is an 11 bit wide register that records the lowest measured value of the horizontal front porch in number of pixels during video
detect. When no video is detected, this register will return a value of zero. Reading this register within less than one complete field
period after the Video Detect Reset may give erroneous results. This register resets to zero after the Video Detect Reset has been
written.
L
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相關(guān)PDF資料
PDF描述
LM1270N Hi-Brite 200 MHz I2C Compatible RGB Image Enhancer with Video Auto Sizing
LM1270NA Hi-Brite 200 MHz I2C Compatible RGB Image Enhancer with Video Auto Sizing
LM1279 110 MHz RGB Video Amplifier System with OSD
LM1279N 110 MHz RGB Video Amplifier System with OSD
LM1281 85 MHz RGB Video Amplifier System with On Screen Display (OSD)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM1270N 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Hi-Brite 200 MHz I2C Compatible RGB Image Enhancer with Video Auto Sizing
LM1270NA 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Hi-Brite 200 MHz I2C Compatible RGB Image Enhancer with Video Auto Sizing
LM1276 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs
LM1276AAA 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs
LM1279 制造商:NSC 制造商全稱:National Semiconductor 功能描述:110 MHz RGB Video Amplifier System with OSD
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