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參數資料
| 型號： | LC74950BG |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA96 |
| 封裝： | 6 X 6 MM, FBGA-96 |
| 文件頁數： | 22/37頁 |
| 文件大小： | 350K |
| 代理商： | LC74950BG |
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LC74950BG
No.A1647-29/37
Non-linear gain adjustment
When CNLINE = 1, the output obtained in response to the input near the saturation region is made non-linear. When
the non-linear gain adjustment parameter (CONPARA), obtained from the formula below, is less than the multiplier
(RGB: (32 + GAIN_x[6:0])/64, YCbCr: (48 + 12A_GAIN_x[6:0])/64) that is used when the non-linear gain is
adjusted, the input is multiplied by the non-linear gain adjustment parameter, resulting in a non-linear output. The
non-linear start position and maximum non-linear output value can be adjusted using COFFSET[4:0].
CONPARA = (1023
9-bit video signals) × (64 + COFFSET[4:0])/64
The figure below shows the gain adjustment output when the input is Y and GAIN_Y[6:0] = 63.
2) DC level adjustment
Registers related to DC level adjustment
Name
Functions
Sub address
bit width
SELYCRGB
This register switches between the YCbCr input and RGB input.
0: YCbCr, 1: RGB
0x14
1
BRADJ
This register adjusts the DC level. When the gain adjustment + DC level adjustment
output is linear (BNLINE = 0), BRADJ is offset from the video signals produced after the
gain adjustment (the Y signal is further offset by 64).
Setting range: -64 to +63, default value:
±0 (40h)
0x1D
7
CNLINE
This register sets the applicable non-linear gain adjustment,
when the gain adjustment + DC level adjustment is used (BRADJ<40h), to ON or OFF.
0: OFF (linear gain adjustment)
1: ON (non-linear gain adjustment)
0x19
1
BNLINE
This register sets the applicable non-linear gain adjustment,
when the gain adjustment + DC level adjustment is used (BRADJ>40h), to ON or OFF.
0: OFF (linear gain adjustment)
1: ON (nonlinear gain adjustment)
0x1A
1
COFFSET
This register adjusts the non-linear gain region when the non-linear gain adjustment is
ON (BNLINE = 1)
0x1C
5
GAIN_Y=63 (AMP=1.73)
0
200
400
600
800
1000
1200
0
200
400
600
800
1000
1200
INPUT(LSB)
OUTPUT(LSB)
INPUT
CNLINE=0
CNLINE=1, COFFSET=0
CNLINE=1, COFFSET=4
CNLINE=1, COFFSET=8
CNLINE=1, COFFSET=12
CNLINE=1, COFFSET=15
CNLINE=1, COFFSET=20
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相關代理商/技術參數 |
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| LC74950BG-TLM-H | 功能描述:視頻模擬/數字化轉換器集成電路 RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉換器數量:1 ADC 輸入端數量:4 轉換速率:3 Gbps 分辨率:8 bit 結構: 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| LC74980W | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LC74981W | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LC74982W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LCD TV Scan Converter IC |
| LC749870W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Silicon gate NTSC/PAL/SECAM Digital Video Decoder |
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