欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: MC44007
廠商: Motorola, Inc.
英文描述: CHROMA 4 VIDEO PROCESSOR
中文描述: 色度4視頻處理器
文件頁數: 38/40頁
文件大小: 491K
代理商: MC44007
MC44002 MC44007
38
MOTOROLA ANALOG IC DEVICE DATA
APPENDIX B – I2C BUS AND RGB CONTROL LOOPS WITH MC44002/7
The RGB drive DACs cannot be buffered on account of the
chip area that this would take up. This factor has
considerable implications on the way that the I2C data is
written into the MC44002/7 memory. If the data for
Brightness, Contrast, Saturation and Hue are transmitted at
just any time, a disturbance will be visible on the screen.
To overcome this difficulty, a method synchronizing the
MCU to write data only during the field interval has been
developed. This represents something of a limitation, but has
to be used only for the 4 user controls.
Another characteristic of the MC44002/7 is that the
Contrast control function is carried out within the RGB
sampling loops. If data is written into the registers during the
time when the RGB loops are taking their samples, then the
situation arises where data is being sampled and changed at
the same time. Hence, the loops will inevitably go unstable.
When this happens, the brightness is seen to vary
uncontrollably while the Contrast is changed. The effect has
been described as “loop bounce”.
The timing diagram below show the exact situation.
From the start of the field flyback pulse to the beginning of
the RGB sampling, approximately 1.2 ms is available to write
the I2C data. Therefore, with a reasonable safety margin, the
write time should be limited to only about 1.0 ms. This should
not present any serious difficulty since only the data byte has
to be transmitted during this time, and then only for the 4 user
controls.
1.2 ms
Loop Sampling
Waveform (Pin 20)
Video Field Interval
Field Flyback
Synchronizing
Pulse
R
G
B
相關PDF資料
PDF描述
MC44035FTB MULTISTANDARD VIDEO SIGNAL PROCESSOR WITH INTEGRATED CHROMA DELAY LINE
MC44030FTB MULTISTANDARD VIDEO SIGNAL PROCESSOR WITH INTEGRATED CHROMA DELAY LINE
MC44030P MULTISTANDARD VIDEO SIGNAL PROCESSOR WITH INTEGRATED CHROMA DELAY LINE
MC44035P MULTISTANDARD VIDEO SIGNAL PROCESSOR WITH INTEGRATED CHROMA DELAY LINE
MC44107 IR Remote Control Transmitter
相關代理商/技術參數
參數描述
MC44007P 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:CHROMA 4 VIDEO PROCESSOR
MC4401 制造商:SHENZHENFREESCALE 制造商全稱:ShenZhen FreesCale Electronics. Co., Ltd 功能描述:P-Channel 30-V (D-S) MOSFET Low thermal impedance
MC44011 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Chroma 4 Multistandard Video Processor
MC44011FB 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:BUS CONTROLLED MULTISTANDARD VIDEO PROCESSOR
MC44011FN 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Chroma 4 Multistandard Video Processor
主站蜘蛛池模板: 肃宁县| 桦甸市| 乐业县| 建阳市| 杂多县| 板桥市| 安泽县| 鲁甸县| 张家界市| 广丰县| 乌鲁木齐市| 来宾市| 二连浩特市| 淮北市| 庆城县| 涡阳县| 应城市| 寿阳县| 大足县| 尼勒克县| 施甸县| 清河县| 淅川县| 白朗县| 土默特右旗| 仁寿县| 金阳县| 贵州省| 郴州市| 大理市| 米林县| 张家界市| 常宁市| 穆棱市| 新密市| 兴安县| 通州区| 师宗县| 中卫市| 阿坝县| 武宁县|