參數(shù)資料
型號(hào): KA2500
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
元件分類(lèi): 運(yùn)動(dòng)控制電子
英文描述: I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS
中文描述: 的I2C總線控制轉(zhuǎn)/克/乙顯示器的視頻放大器
文件頁(yè)數(shù): 16/28頁(yè)
文件大小: 276K
代理商: KA2500
I
2
C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS KA2500
15
FUNCTIONAL DESCRIPTION
Contrast (OSD 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.
Brightness Adjustment (8-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.
Cut-Off (SUB Contrast) Adjustment (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.
The SUB contrast adjustment allows you to cover a typical range of 11dB.
OSD Inputs
The KA2500 includes all the circuitry necessary to mix OSD signals into the R/G/B video signal.
You need 4 pins for this function. (R/G/B OSD, OSD blanking)
Serial Interface
The 2-wires serial interface is an I
2
C BUS interface.
The slave address of the KA2500 is DC (hexadecimal)
Data Transfer
All bytes are sent MSB (Most Significant Bit) bit first and the write data transfer is closed by a stop.
The MCU can write data into the KA2500 registers. To do that, after a start, the MCU must send:
- The I
2
C address slave byte with a low level for R/W bit (bit1)
- The byte of the interinal register address where the MCU wants to write data (SUB Address)
- The data
- Stop
Bit8
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
1
1
0
1
1
1
0
0 (W)
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KA2531S24 功能描述:POT 25K OHM 2W LOG TAPER RoHS:是 類(lèi)別:電位計(jì),可變電阻器 >> 旋轉(zhuǎn) - 對(duì)數(shù) 系列:K 標(biāo)準(zhǔn)包裝:25 系列:51 電阻(歐姆):10k 功率(瓦特):0.25W,1/4W 容差:±20% 溫度系數(shù):±1000ppm/°C 匝數(shù):單路 旋轉(zhuǎn):290° 調(diào)節(jié)型:側(cè)面調(diào)節(jié) 電阻材料:導(dǎo)電塑料 端接類(lèi)型:PCB 引腳 觸動(dòng)器長(zhǎng)度:0.875"(22.22mm) 觸動(dòng)器類(lèi)型:開(kāi)槽軸 觸動(dòng)器直徑:0.125"(3.18mm) 尺寸 - 主體:方形 - 0.350" L x 0.492" W x 0.522" H(8.89mm x 12.50mm x 13.25mm) 安裝類(lèi)型:通孔 包裝:散裝