- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376602 > DDP3300A (MICRONAS SEMICONDUCTOR HOLDING AG) Single-Chip Display and Deflection Processor PDF資料下載
參數(shù)資料
| 型號(hào)： | DDP3300A |
| 廠商： | MICRONAS SEMICONDUCTOR HOLDING AG |
| 英文描述： | Single-Chip Display and Deflection Processor |
| 中文描述： | 單芯片顯示器和偏轉(zhuǎn)處理器 |
| 文件頁數(shù)： | 13/53頁 |
| 文件大小： | 1767K |
| 代理商： | DDP3300A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當(dāng)前第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁
PRELIMINARY DATA SHEET
DDP 3300 A
MICRONAS INTERMETALL
13
2.2. Analog Back End
The digital RGB signals are converted to analog RGBs
using three video digital to analog converters (DAC) with
10-bit resolution. An analog brightness value is provided
by three additional DACs. The adjustment range is 40%
of the full RGB range.
The back-end allows insertion of an external analog
RGB signal. The RGB signal is key-clamped and in-
serted into the main RGB by the fast blank switch. The
external RGB signals are virtually handled as priority
bus signals. Thus, they can be overlaid or underlaid to
the digital picture. The external RGB signals can be ad-
justed independently as regards DC-level (brightness)
and magnitude (contrast).
Controlling the whitedrive/analog brightness and also
the external contrast and brightness adjustments is
done via the Fast Processor, located in the VPC 3200 A
(ref 2.3.5.). Control of the cutoff DACs is via I
2
C-bus reg-
isters.
Finally cutoff and blanking values are added to the RGB
signals. Cutoff (dark current) is provided by three 9-bit
DACs. The adjustment range is 60% of full scale RGB
range.
The analog RGB-outputs are current outputs with cur-
rent-sink characteristics. The maximum current drawn
by the output stage is obtained with peak white RGB.
2.2.1. CRT Measurement and Control
The display processor is equipped with an 8-bit PDM-
ADC for all measuring purposes. The ADC is connected
to the sense input pin, the input range is 0 to 1.5V. The
bandwidth of the PDM filter can be selected; it is
40/80 kHz for small/large bandwidth setting. The input
impedance is more than 1 M
.
Cutoff and white drive current measurement are carried
out during the vertical blanking interval. They always use
the small bandwidth setting. The current range for the
cutoff measurement is set by connecting a sense resis-
tor to the MADC input. For the whitedrive measurement,
the range is set by using another sense resistor and the
range select switch 2 output pin (RSW2). During the ac-
tive picture, the minimum and maximum beam current
is measured. The measurement range can be set by us-
ing the range select switch 1 pin (RSW1) as shown in
Fig. 2–10 and Fig. 2–11. The timing window of this mea-
surement is programmable. The intention is to automati-
cally detect letterbox transmission or to measure the ac-
tual beam current. All control loops are closed via the
external control microprocessor.
SENSE
RSW1
RSW2
R2
R3
beam current
A
D
MADC
R1
Fig. 2–10:
MADC Range Switches
ultra black
black
cutoff
R
white
drive
CR + IBRM
CR + IBRM + WDRV·WDR
R
G
B
TML
CG + IBRM
CB + IBRM
PICTURE MEAS.
PICTURE MEAS.
TUBE MEASUREMENT
active measure-
ment resistor
R1 R2 R3
RSW1=on, RSW2=on
R1
R1 R3
=on
R
cutoff
G
cutoff
B
R1 R2 R3
Fig. 2–11:
MADC Measurement Timing
RSW1=on, RSW2=on
Remark:
The adjustment for
IBRM, WDR, WDG,
WDB is done in the
VPC 3200 A
PMST
PMSO
Lines
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DDP3310B | Display and Deflection Processor |
| DDR-TJS-T2 | LED AlInGaP |
| DD0-SJS-S1 | LED AlInGaP |
| DD0-SJS-S2 | LED AlInGaP |
| DD0-SJS-T1 | LED AlInGaP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DDP3300A(DIP64) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| DDP3300A(PLCC68) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV/Video Signal Processor |
| DDP3300A(SDIP64) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV/Video Signal Processor |
| DDP3300AD3 | 制造商:MICRONAS 功能描述:New |
| DDP3300APSD3 | 制造商:MICRONAS 功能描述:New |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。