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參數資料
| 型號： | LM1246AAA/NA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁數： | 27/51頁 |
| 文件大小： | 2794K |
| 代理商： | LM1246AAA/NA |
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Building Display Pages (Continued)
TABLE 21. Two Byte Communication Mode
ATTRIBUTE Byte
X
0
1
CC[8]
ATT[3:0]
TABLE 22. Sequence of Transmitted Bytes
HALF RANDOM ADDRESS MODE
The Half Random Address mode allows different attribute and character codes to be sent within one transmission in the same
way as the Two Byte Communication mode. The entire 512-character Page ROM is fully accessible in this mode, without the need
to stop and restart transmission. The advantage of Half Random Addressing over the Two Byte mode is that the Page RAM
addresses do not have to be written to in a sequential order. However, the Page RAM addresses cannot be entirely random, as
they must be within one half of the Page RAM. A new transmission must be restarted to switch to another half of the Page RAM.
The Page RAM address is not automatically incremented in this mode. This mode is very useful for modifying character codes
and attributes in the first 256 locations of the Page RAM. The attribute byte is shown in Table 23. Half Random Address Mode,
and the sequence of transmitted bytes is shown in Table 24. Sequence of Transmitted Bytes. Either another LSB address &
attribute & character code or a STOP must follow after each character code.
TABLE 23. Half Random Address Mode
ATTRIBUTE Byte
X
1
0
CC[8]
ATT[3:0]
TABLE 24. Sequence of Transmitted Bytes
FULL RANDOM ADDRESS MODE
The Full Random Address mode is very similar to the Half Random Address mode. However, the advantage is that the Page RAM
addresses can now be entirely random. There is no longer a restriction to only one half of the Page RAM. The Page RAM address
is not automatically incremented in this mode. This is very useful for modifying character codes and attributes anywhere in the
Page RAM without starting a new transmission sequence. The Full Random Address mode is the most flexible mode of
transmission. The attribute byte is shown in Table 25. Full Random Address Mode, and the sequence of transmitted bytes is
shown in Table 26. Sequence of Transmitted Bytes. Either another LSB address & MSB address & attribute & character code or
a STOP must follow after each character code.
TABLE 25. Full Random Address Mode
ATTRIBUTE Byte
X
1
CC[8]
ATT[3:0]
TABLE 26. Sequence of Transmitted Bytes
Control Register Definitions
OSD INTERFACE REGISTERS
Frame Control Register 1:
FRMCTRL1 (0x8400)
autosize
Fade
i/o
trans
clear
win2
win1
OSD
HTD
ASZEN
FEN
TD
CDPR
D2E
D1E
OsE
LM1246
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| 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 |
| 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 |
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