參數(shù)資料
型號(hào)： LM1253AN
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 畫面疊加
英文描述： Monolithic Triple 180 MHz I2C CRT Pre-amp With Integrated Analog On Screen Display (OSD) Generator
中文描述： ON-SCREEN DISPLAY IC, PDIP28
封裝： 0.600 INCH, PLASTIC, DIP-28
文件頁數(shù)： 42/57頁
文件大?。?/td> 1621K
代理商： LM1253AN
Control Register Definitions
(Continued)
ROM Signature Control Register (I
2
C address 840Dh).
REGISTER NAME: ROMSIGCTRL
Bit 7
Bit 0
RSV
RSV
RSV
RSV
RSV
RSV
RSV
CRS
Bit 0:
Calculate ROM Signature. Setting this bit causes the entire ROM to be read, sequentially, and a 16 bit CRC calculated
over its contents. The residual value from this calculation is placed in the ROM Signature Data register. This bit au-
tomatically clears itself when the calculation has been completed.
RESERVED.
ROM Signature Data Register (I
2
C address 840Eh–840Fh).
REGISTER NAME: ROMSIGDATAB1 (840Fh) ROMSIGDATAB0 (840Eh)
Bits 7–1:
Bit 15
Bit 8
Bit 7
Bit 0
CRC15
CRC14
CRC13
CRC12
CRC11
CRC10
CRC9
CRC8
CRC7
CRC6
CRC5
CRC4
CRC3
CRC2
CRC1
CRC0
Bits 15–0: ROM Signature Data. This register indicates the residual value from the CRC calculation. Devices containing ROMs
with different programming will give different signatures. Devices with the same ROM programming will give the same
signature.
Display Window 1 Horizontal Pixel Start Location Register (I
2
C address 8410h).
REGISTER NAME: HSTRT1 (8410h)
Bit 7
Bit 0
1H7
1H6
1H5
1H4
1H3
1H2
1H1
1H0
Bits 7–0: Display Window 1 Horizontal Pixel Start Location. These seven bits determine the starting horizontal pixel location,
which is determined by multiplying the value of these bits by 4 and adding 30 pixels. Due to pipeline delays, the first
usable location for the OSD window is approx 42 pixels to the right of the horizontal flyback pulse. For this reason, the
display start location must be programmed with a number larger than 2, otherwise improper operation may occur.
This byte must be set so the entire OSD window is within the active video.
Display Window 1 Vertical Pixel Start Location Register (I
2
C address 8411h).
REGISTER NAME: VSTRT1 (8411h)
Bit 7
Bit 0
1V7
1V6
1V5
1V4
1V3
1V2
1V1
1V0
Bits 7–0: Display Window 1 Vertical Pixel Start Location. These eight bits determine the starting vertical pixel location in con-
stant height character lines, which is determined by multiplying the value of these bits 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 main-
tain accurate position relative to the character cell size—See Constant Character Height Mechanism section.)
This byte must be set so the entire OSD window is within the active video.
Display Window 1 Column Width Control Register (I
2
C address 8414h–8417h).
REGISTER NAME: COLWIDTH1B3 (8417h) COLWIDTH1B2 (8416h) COLWIDTH1B1 (8415h) COLWIDTH1B0 (8414h)
Bit 31
Bit 24
Bit 23
Bit 16
COL31
COL30
COL29
COL28
COL27
COL26
COL25
COL24
COL23
COL22
COL21
COL20
COL19
COL18
COL17
COL16
Bit 15
Bit 8
Bit 7
Bit 0
COL15
COL14
COL13
COL12
COL11
COL10
COL9
COL8
COL7
COL6
COL5
COL4
COL3
COL2
COL1
COL0
Bits 31–0: Display Window 1 Column Width 2x Enable Bits. These thirty-two bits correspond to columns 31–0 of Display Win-
dow 1, respectively. A value of zero indicates the column will have normal width (12 pixels). A value of one 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 row, then all display
characters after the first thirty-two will have normal width (12 pixels).
L
www.national.com
42
相關(guān)PDF資料
PDF描述
LM1253A Monolithic Triple 180 MHz I2C CRT Pre-amp With Integrated Analog On Screen Display (OSD) Generator
LM1262 200 MHz I2C Compatible RGB Video Amplifier System with OSD and DACs
LM1262NA 200 MHz I2C Compatible RGB Video Amplifier System with OSD and DACs
LM1267NA 150 MHz I2C Compatible RGB Video Amplifier System with OSD and DACs
LM1267 150 MHz I2C Compatible RGB Video Amplifier System with OSD and DACs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM-1256 制造商:ROHM 制造商全稱:Rohm 功能描述:16 x 16 matrix displays
LM-1256_1 制造商:ROHM 制造商全稱:Rohm 功能描述:16】16 matrix displays
LM-1256LB1 制造商:ROHM 制造商全稱:Rohm 功能描述:16】16 matrix displays
LM125AN 制造商:NSC 制造商全稱:National Semiconductor 功能描述:VOLTAGE REGULATORS
LM125H 制造商: 功能描述: 制造商:undefined 功能描述:
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*