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參數(shù)資料
| 型號： | LM1246 |
| 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)： | 37/51頁 |
| 文件大?。?/td> | 2794K |
| 代理商： | LM1246 |
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Control Register Definitions
(Continued)
COLWIDTH1B1 (0x8415)
COLWIDTH1B0 (0x8414)
Window 1 Column Width - Low Bytes
COL[15:0]
Bits 31–0
These are the Display Window 1 Column Width 2x Enable Bits. These thirty-two bits correspond to
columns 31–0 of Display Window 1, respectively. A value of zero indicates the column will have
normal width (12 pixels). A “1” indicates the column will be twice as wide as normal (24 pixels). For
the double wide case, each Character Font pixel location will be displayed twice, in two
consecutive horizontal pixel locations. The user should note that if more than 32 display characters
are programmed to reside on a line, then all display characters after the first thirty-two will have
normal width (12 pixels).
Display Window 2 Horizontal Start Address:
HSTRT2 (0x8418)
Window 2 Horizontal Start Address
2H[7:0]
Bits 7–0
This register determines the horizontal start position of Window 2 in OSD pixels (not video signal pixels). The actual
position, to the right of the horizontal flyback pulse, is determined by multiplying this register value by 4 and adding
30. Due to pipeline delays, the first usable start location is approximately 42 OSD pixels following the horizontal
flyback time. For this reason, we recommend this register be programmed with a number larger than 2, otherwise
improper operation may result.
Display Window 2 Vertical Start Address:
VSTRT2 (0x8419)
Window 2 Vertical Start Address
2V[7:0]
Bits 7–0
This register determines the Vertical start position of Window 2 in constant-height character lines (not video scan
lines). The actual position is determined by multiplying this register value by 2. (Note: each character line is treated
as a single auto-height character pixel line, so multiple scan lines may actually be displayed in order to maintain
accurate position relative to the OSD character cell size. (See the
Constant Character Height Mechanism
section.)
This register should be set so the entire OSD window is within the active video.
Display Window 2 Start Address:
W2STRTADRH (0x841B)
Reserved
X
X
W2STRTADRL (0x841A)
Window 2 Start Address
2AD[8:0]
X
X
X
X
X
Bits 8–0
This register determines the starting address of Display Window 2 in the Display Page RAM. The power-on default
of 0x10 starts Window 2 at the midpoint of the Page RAM (0x8100). This location always contains the SL code for
the first line of Window 2.
These bits are reserved and should be set to zero.
Bits 15–9
Display Window 2 Column Width:
COLWIDTH2B3 (0x841F)
COLWIDTH2B2 (0x841E)
Window 2 Column Width - High Bytes
COL[31:16]
COLWIDTH2B1 (0x841D)
COLWIDTH2B0 (0x841C)
Window 2 Column Width - Low Bytes
COL[15:0]
L
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| LM1246NA | 150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LM1246AAA | 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 |
| LM1246AAC/NA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:IC 150MHZ RGB PREAMP 1246 DIP24 |
| LM1246AAC/NA/NOPB | 功能描述:IC PREAMP RGB 150MHZ 24-DIP RoHS:是 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，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 |
| LM1246NA | 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 |
| LM1247 | 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 |
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