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參數(shù)資料
| 型號： | LM1269NA/NOPB |
| 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(shù)： | 10/20頁 |
| 文件大小： | 1676K |
| 代理商： | LM1269NA/NOPB |
I
2C Interface Registers
I
2C IC ADDRESS
Slave Address of the LM1269 is DCh when writing to the registers and DD when reading from the registers.
LM1269 Pre-Amp Interface Registers (all numbers in Hex)
Register
Ad-
dress
De-
fault
Format
R Gain
Control
00
60h
X
R Gain [6:0]
B Gain
Control
01
60h
X
B Gain [6:0]
G Gain
Control
02
60h
X
G Gain [6:0]
Contrast
Cont.
03
60h
X
Contrast [6:0]
DAC1
04
80h
DAC 1[7:0]
DAC2
05
80h
DAC 2[7:0]
DAC3
06
80h
DAC 3[7:0]
DAC4
07
80h
DAC 4[7:0]
DC Offset/
OSD Cont.
08
15h
X
OSD_Cont.
[1:0]
DC_Offset [2:0]
Global
Control
09
00h
X
O
DCF4
DCF1–3
O
PS
BV
Increment
Mode
0A
00h
XXXXXX
O
INCR
Software
Reset
0F
00h
XXXXXXX
SRST
Pre-Amp Interface Registers
Red Channel Gain Control Register (I
2C address 00h)
Register name: R Gain Control (00h)
Bit 7
Bit 0
RSV
RG6
RG5
RG4
RG3
RG2
RG1
RG0
Bits 6–0: Red Channel Gain Control. These seven bits de-
termine the gain for the Red Channel.
Bit 7:
Reserved.
Blue Channel Gain Control Register (I
2C address 01h)
Register name: B Gain Control (01h)
Bit 7
Bit 0
RSV
BG6
BG5
BG4
BG3
BG2
BG1
BG0
Bits 6–0: Blue Channel Gain Control. These seven bits
determine the gain for the Blue Channel.
Bit 7:
Reserved.
Green Channel Gain Control Register (I
2C address 02h)
Register name: G Gain Control (02h)
Bit 7
Bit 0
RSV
GG6
GG5
GG4
GG3
GG2
GG1
GG0
Bits 6–0: Green Channel Gain Control. These seven bits
determine the gain for the Green Channel.
Bit 7:
Reserved.
Contrast Control Register (I
2C address 03h)
Register name: Contrast Control (03h)
Bit 7
Bit 0
RSV
CG6
CG5
CG4
CG3
CG2
CG1
CG0
Bits 6–0: Contrast Control. These seven bits vary the gain
of all three channels.
Bit 7:
Reserved.
DAC Interface Register Definitions
DAC 1 Register (I
2C address 04h)
Register name: DAC 1 (04h)
Bit 7
Bit 0
D1–7 D1–6 D1–5 D1–4 D1–3 D1–2 D1–1 D1–0
Bits 7–0: DAC 1. These eight bits determine the output
voltage of DAC 1.
DAC 2 Register (I
2C address 05h)
Register name: DAC 2 (05h)
Bit 7
Bit 0
D2–7 D2–6 D2–5 D2–4 D2–3 D2–2 D2–1 D2–0
Bits 7–0: DAC 2. These eight bits determine the output
voltage of DAC 2.
DAC 3 Register (I
2C address 06h)
Register name: DAC 3 (06h)
LM1269
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