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參數(shù)資料
| 型號： | LM1276 |
| 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)： | 25/50頁 |
| 文件大小： | 2597K |
| 代理商： | LM1276 |
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Microcontroller Interface
(Continued)
written to is next sent in two bytes, the least significant byte
being sent first. The master can then send the data, which
consists of one or more bytes. Each data byte is followed by
an acknowledge bit. If more than one data byte is sent, the
data will increment to the next address location. See
Figure
17
.
READ SEQUENCE
Read sequences are comprised of two I
2
C compatible trans-
fer sequences: The first is a write sequence that only trans-
fers the two byte address to be accessed. The second is a
read sequence that starts at the address transferred in the
previous address only write access and increments to the
next address upon every data byte read. This is shown in
Figure 18
. The write sequence consists of the Start Pulse,
the Slave Device Write Address (0xBA), and the Acknowl-
edge bit; the next byte is the least significant byte of the
address to be accessed, followed by its Acknowledge bit.
This is then followed by a byte containing the most signifi-
cant address byte, followed by its Acknowledge bit. Then a
Stop bit indicates the end of the address only write access.
Next the read data access will be performed beginning with
the Start Pulse, the Slave Device Read Address (0xBB), and
the Acknowledge bit. The next 8 bits will be the read data
driven out by the LM1276 preamp associated with the ad-
dress indicated by the two address bytes. Subsequent read
data bytes will correspond to the next increment address
locations. Data should only be read from the LM1276 when
both OSD windows and the Fade In/ Fade Out are disabled.
LM1276 Address Map
20096938
FIGURE 17. I
2
C Compatible Write Sequence
20096939
FIGURE 18. I
2
C Compatible Read Sequence
L
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| LM1276AAA | 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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| LM1279A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LM1279AN | 功能描述:IC AMP RGB VIDEO SYSTEM 20-DIP RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
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