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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)： | 40/48頁 |
| 文件大小： | 3141K |
| 代理商： | LM1247 |
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Pre-Amplifier Interface Registers
(Continued)
Bits 1–0
These determine the optimum frequency range of the Phase Locked Loop. Please see
Table 3
for
recommended register values as a function of horizontal scan rate and the Pixels per Line register,
0x8401[7:5].
This is the Vertical Blanking register. When this bit is a 1, vertical blanking is gated to the video outputs.
When set to a 0, the video outputs do not have vertical blanking.
This is the OSD override bit. This should be set to 0 for normal operation. When set to a 1, the video
outputs are disconnected and OSD only is displayed. This is useful for the OSD display of special
conditions such as “No Signal” and “Input Signal Out of Range”, to avoid seeing unsynchronized video.
Reserved and should be set to zero.
This is the Clamp Polarity bit. When set to a 0, the LM1247 expects a positive going clamp pulse.
When set to a 1, the expected pulse is negative going.
Reserved and should be set to zero.
Bit 2
Bit 3
Bit 4
Bit 5
Bits 7–6
Software Reset and Test Control:
SRTSTCTRL (0x843F)
Reserved
X
Res’d
X
Reset
SRST
AID
X
X
X
X
Bit 0
When this bit is a 1, all registers except this one are loaded with their default values. All operations are
aborted, except data transfers in progress on the I
2
C compatible bus. This bit clears itself when the reset is
complete.
Reserved and should be set to zero.
This bit disables the register Auto-Increment feature of the I
2
C compatible protocol. When set to a 1
Auto-Increment is disabled and when a 0, AI is enabled.
Reserved and should be set to zero.
Bits 5–1
Bit 6
Bit 7
Attribute Table and Enhanced Features
Each display character and SL in the Display Page RAM will have a 4-bit Attribute Table entry associated with it. The user should
note that two-color display characters and four-color display characters use two different Attribute Tables, effectively providing 16
attributes for two-color display characters and 16 attributes for four-color display characters.
For two-color characters the attribute contains the code for the 9-bit foreground color (Color 1), the code for the 9-bit background
color (Color 0), and the character’s enhanced features (Button Box, Blinking, Heavy Box, Shadowing, Bordering, etc.).
For four-color characters the attribute contains the code for the 9-bit Color 0, the code for the 9-bit Color 1, the code for the 9-bit
Color 2, the code for the 9-bit Color 3 and the character’s enhanced features (Button Box, Blinking, Heavy Box, Shadowing,
Bordering, etc.).
TWO COLOR ATTRIBUTE FORMAT
The address range for an attribute number, 0
≤
n
≤
15, is provided in
Table 25
.
ATT2C3n (0x8443+n
*
4)
ATT2C2n (0x8442+n
*
4)
Enhanced Feature
EFB[3:0]
Reserved
X
Color 1 -
C1B[2:1]
X
X
X
X
X
X
X
X
X
ATT2C1n (0x8441+n
*
4)
Color 1 - Green
C1G[2:0]
ATT2C0n (0x8440+n
*
4)
Color 0 - Green
C0G[2:0]
Blue
C2B0
Color 1 - Red
C1R[2:0]
Color 0 - Blue
C0B[2:0]
Color 0 - Red
C0R[2:0]
Bits 8–0
These nine bits determine the background color (color1) which is displayed when the corresponding OSD
pixel is a 0.
These nine bits determine the foreground color (color2) which is displayed when the corresponding OSD pixel
is a 1.
These are the enhanced feature (EF) bits which determine which feature is applied to the displayed character.
The features and their corresponding codes are shown in
Table 24
.
Reserved and should be set to zero.
Bits 17–9
Bits 21–18
Bits 31–22
L
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相關(guān)代理商/技術(shù)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(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動電話，手機(jī)，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)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 |
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