- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385474 > LM1247 (National Semiconductor Corporation) 150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs PDF資料下載
參數(shù)資料
| 型號： | LM1247 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs |
| 中文描述： | 150 MHz的I2C兼容的RGB前置放大器512個字符OSD光盤，512個字符RAM和4 DAC的內(nèi)置 |
| 文件頁數(shù)： | 39/48頁 |
| 文件大?。?/td> | 3141K |
| 代理商： | LM1247 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁當前第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
Pre-Amplifier Interface Registers
(Continued)
Bits 7–0
This register determines the output of DAC 3. The full-scale output is determined by bit 5 of the
DAC Config, OSD Contrast & DC Offset Register (0x8438).
DAC 4 Output Level:
DAC4CTRL (0x8437)
DAC 4 Output Level
BA[7:0]
Bits 7–0
This register determines the output of DAC 4. The output of this DAC can be scaled and mixed
with the outputs of DACs 1–3 as determined by bit 6 of the DAC Config, OSD Contrast & DC
Offset Register.
DAC Config, OSD Contrast & DC Offset:
DACOSDDCOFF (0x8438)
DAC Options
OSD Contrast
DCF[1:0]
Res’d
X
DC Offset
DC[2:0]
OSD[1:0]
Bits 2–0
Bits 4–3
Bit 5
These determine the DC offset of the three video outputs, blue, red and green.
These determine the contrast of the internally generated OSD.
When this bit is a 0, the full-scale outputs of DACs 1–3 are 0.5V to 4.5V. When it is a 1 the
full-scale level is 0.5V to 2.5V.
When this bit is a 0, the DAC 4 output is independent. When it is a 1, the DAC 4 output is scaled
by 50% and added to the outputs of DACs 1–3.
Reserved and should be set to zero.
Bit 6
Bit 7
Global Video Control:
GLOBALCTRL (0x8439)
Reserved
X
X
Power
PS
Blank
BV
X
X
X
X
Bit 0
When this bit is a 1, the video outputs are blanked (set to black level). When it is a 0, video is not
blanked.
When this bit is a 1, the analog sections of the preamplifier are shut down for low power
consumption. When it is a 0, the analog sections are enabled.
Reserved and should be set to 0.
Bit 1
Bits 7–2
Auxillary Control:
AUXCTRL (0x843A)
Reserved
X
X
Int Clp
ACEn
H Blnk
HBEn
X
X
X
X
Bit 0
When this bit is a 1, the horizontal blanking input at pin 24 is gated to the video outputs to provide
horizontal blanking. When it is a 0, the horizontal blanking at the outputs is disabled.
When this bit is a 1, the internal auxillary clamp is enabled. This operates on the blue video input
so that if its level falls below 0.8 VDC, then this turns the internal clamp on to raise the output
level. This is not to be confused with the black level video clamp in the next register (0x843E).
This bit is reserved and should be set to a 1.
These bits are reserved and should be set to 0.
Bit 1
Bit 2
Bits 3–7
PLL Range:
PLLFREQRNG (0x843E)
Clamp
CLMP
Reserved
X
OSD
OOR
VBlank
VBL
PLL
X
X
PFR[1:0]
L
www.national.com
39
相關PDF資料 |
PDF描述 |
|---|---|
| LM1270 | Hi-Brite 200 MHz I2C Compatible RGB Image Enhancer with Video Auto Sizing |
| 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 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM1247AAG/NA | 功能描述:IC PREAMP CMOS 150MHZ 24DIP RoHS:否 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調諧器 應用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應商設備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
| LM1247DMC/NA | 制造商:Texas Instruments 功能描述: |
| LM124A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low Power Quad Operational Amplifiers |
| LM124AD | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW POWER QUAD OPERATIONAL AMPLIFIERS |
| LM124ADR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:QUADRUPLE OPERATIONAL AMPLIFIERS |
發(fā)布緊急采購，3分鐘左右您將得到回復。