Z90255 ROM和OTP Z90251
32 KB电视控制器, OSD
目录
1概述................................................ .......................................... 9
1.1
1.2
1.3
2.1
2.2
2.3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
4.1
引脚分配和说明.............................................. .... 13
单一用途的引脚说明............................................. ..... 15
复用引脚说明............................................... ......... 17
标准的注册文件............................................... .................... 19
扩展寄存器文件............................................... ................... 19
程序存储器................................................ ........................... 19
OSD位置................................................ ..................................
第二个颜色特征............................................... .....................
网格和色调效果.............................................. ................
OSD淡出................................................ ........................................
行间间距.............................................. ...........................
字辈................................................ ....................
字符大小和平滑的影响..........................................
边缘效应................................................ ................................
显示属性控制............................................... ................
HV中断处理............................................... ...............
23
27
29
34
37
38
40
41
42
51
2存储器说明............................................... .................. 19
3显示在屏幕上............................................. ........................ 23
4 Z90255 I2C主界面............................................. ...... 54
控制I
2
C接口................................................ .......... 56
5输入/输出端口............................................. ...................... 58
6红外接口............................................... ..................... 67
7个脉宽调制器.............................................. ......... 71
7.1
7.2
7.3
PWM模式寄存器............................................... ....................... 71
PWM1通过PWM11 ............................................... .................. 73
数字/模拟转换与PWM .......................................... 81
8个模拟 - 要 - 数字转换器........................................... 。 82
9电气特性............................................... .... 85
9.1
9.2
绝对最大额定值............................................... .......... 85
直流特性................................................ .......................... 86
PS001300-TVC1099
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初步
3