參數資料
型號: S1D2518X01
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
元件分類: 視頻放大器
英文描述: DB25 RJ11,4 WIRE ONLY. FEMAL
中文描述: 的I2C總線控制轉/克/乙視頻放大器
文件頁數: 21/38頁
文件大?。?/td> 457K
代理商: S1D2518X01
S1D2518X01 I
2
C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS
20
Preliminary
REGISTER DESCRIPTION
Contrast Adjustment (8 bits)
The contrast adjustment is made by controlling simultaneously the gain of three internal variable gain amplifiers
through the I
2
C bus interface.
The contrast adjustment allows you to cover a typical range of 38dB.
OSD Contrast Adjustment (4 bits)
The OSD contrast adjustment is made by controlling simultaneously the gain of three internal variable gain
amplifiers through the I
2
C bus interface.
The OSD contrast adjustment allows you to cover a typical range of 38dB.
Brightness Adjustment (5 bits)
The brightness adjustment controls to add the same black level (pedestal) to the 3-channel /R/G/B signals after
contrast amplifier by I
2
C bus.
Cut-Off Brightness Adjustments (8 bits)
The cut-off brightness adjustment is made by simultaneously controlling the external cut-off current.
SUB Contrast Adjustment (8 bits
×
3)
The SUB contrast adjustment allows to cover a typical range of 12dB.
Cut-Off Adjustments (8 bits
×
3)
These adjustments are used to adjust the white balance, and the gain of each channel is controlled by I
2
C bus.
Contrast Register (SUB ADRS: 00H) (Vin = 0.56Vpp, bright: 00H, sub: FFH)
Brightness Register (3-ch) (sub adrs: 01H) (cont: 80H, sub: 80H)
Hex
Bits
Contrast
(Vpp)
Gain
(dB)
Int. Value
(Hex)
B7
0
1
1
B6
0
0
1
B5
0
0
1
B4
0
0
1
B3
0
0
1
B2
0
0
1
B1
0
0
1
B0
0
0
1
00
80
FF
0
-35.0
11.5
17.5
0.0164
2.1
4.2
O
Increment/bit
Hex
Bits
B2
0
1
Brightness
(V)
Int. Value
(Hex)
B4
0
1
B3
0
1
B1
0
1
B0
0
1
00
1F
0.6
1.8
O
Increment/bit
0.038
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