CS4954 CS4955
目录
1.
特性和规范............................................... ......................................... 6
AC &直流参数规格............................................. ............................................... 6
推荐工作条件.......................................................................................................6
热特性..............................................................................................................6
DC特性..........................................................................................................................6
AC特性..........................................................................................................................8
时序特性...................................................................................................................9
附加CS4954 / 5的特性.....................................................................................................11
CS4954简介......................................................................................................................11
功能说明...............................................................................................................11
4.1
视频定时发生器...............................................................................................................11
4.2
视频输入格式化..................................................................................................................12
4.3
彩色副载波合成器.......................................................................................................12
4.4
色度路径................................................................................................................................12
4.5
亮度路径....................................................................................................................................13
4.6
RGB路径和分量YUV路径............................................ .............................................. 13
4.7
数字到模拟转换器........................................................................................................13
4.8
基准电压源.......................................................................................................................14
4.9
目前参考........................................................................................................................14
4.10主机接口...............................................................................................................................14
4.11隐藏式字幕服务..............................................................................................................14
4.12图文电视服务..........................................................................................................................15
4.13宽屏信号支持和CGMS .......................................... ...................................... 15
4.14 VBI编码...............................................................................................................................15
4.15控制寄存器.........................................................................................................................15
4.16可测性.....................................................................................................................................15
操作说明............................................................................................................15
5.1
复位层次...........................................................................................................................15
5.2
视频时序................................................................................................................................16
5.2.1从模式输入接口........................................... .................................................. ..16
5.2.2主模式输入接口........................................... .................................................. 16
5.2.3垂直时序...................................................................................................................17
5.2.4水平时序..............................................................................................................17
5.2.5 NTSC隔行................................................................................................................17
5.2.6 PAL隔行...................................................................................................................17
5.2.7逐行扫描..............................................................................................................18
5.2.8 NTSC逐行扫描...................................................................................................18
5.2.9 PAL逐行扫描......................................................................................................19
5.3
ITU- R.BT656 ................................................................................................................................19
5.4
数字视频输入模式............................................................................................................21
5.5
多标准输出格式模式............................................ .............................................. 21
5.6
副载波产生..................................................................................................................22
5.7
副载波补偿............................................................................................................23
5.8
隐藏式字幕插入..............................................................................................................23
5.9
可编程水平同步和垂直同步.......................................... .................................................. ..24
5.10宽屏幕信令（ WSS）和CGMS ......................................... ......................................... 24
5.11支持图文电视...........................................................................................................................24
5.12彩条发生器.....................................................................................................................26
5.13 VBI编码................................................................................................................................27
5.14超白/超黑的支持........................................... .................................................. ... 27
5.15中断......................................................................................................................................27
5.16个通用I / O端口.............................................................................................................27
滤波器响应............................................................................................................................29
模拟................................................................................................................................................32
7.1
模拟时序..............................................................................................................................32
7.2
VREF ............................................................................................................................................32
7.3
ISET .............................................................................................................................................32
7.4
数模转换器............................................................................................................................................32
7.4.1亮度DAC ................................................................................................................32
7.4.2色度DAC ............................................................................................................33
7.4.3 CVBS DAC ........................................................................................................................33
7.4.4红DAC ...........................................................................................................................33
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7.
DS278F6
3
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