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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)： | 31/48頁 |
| 文件大小： | 3141K |
| 代理商： | LM1247 |
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Building Display Pages
(Continued)
TABLE 19. Example 2 Data Transmissions
(Continued)
Description
Data Sent
0x80
0x00
0xC5
RAM Address
Address MSB
Use Attribute 0 for the “D”
Character “D”
I
2
C stop condition
0x8006
I
2
C start condition
LM1247 Slave Write Address
Address LSB
Address MSB
Use Attribute 1 for the “E”
Character “E”
I
2
C stop condition
0xBA
0x07
0x80
0x01
0xC6
0x8007
I
2
C start condition
LM1247 Slave Write Address
Address LSB
Address MSB
Use Attribute 2 for the “F”
Character “F”
End-of-Line (EOL) Command
End-of-Screen (EOS) Command
I
2
C stop condition
0xBA
0x08
0x80
0x02
0xC7
0x01
0x00
0x8008
0x8009
0x800A
EXAMPLE 3
A blue message on a yellow background is to be displayed which has two lines of different lengths. Three transparent skipped
lines are required between the character lines. Again, we will use 2-color characters. This is shown in
Figure 27
.
Notes:
The character codes used are from bank 4 of the sample font shown in
Figure 29
through
Figure 36
. The bank select settings
from Example 1 will be used.
In order to center the first line with the second, two transparent blanks will begin the first line.
The transparent skip lines and blank characters are obtained by using attribute 0 for the SL and the two blanks, and setting
bit 4 of the Frame Control Register 1 to 0. (See Control Register Definitions section).
If instead we used attributes 8 and 9 for this example, the black would not be transparent, since transparency only operates
on black colors in the first 8 attributes.
The data shown in
Table 20
is sent to the LM1247 in two I
2
C transmissions.
20048442
FIGURE 27. Example 3 OSD
L
www.national.com
31
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相關(guān)代理商/技術(shù)參數(shù) |
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| LM124ADR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:QUADRUPLE OPERATIONAL AMPLIFIERS |
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