OM8839引脚功能与电压参数

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脚号引脚功能电压/V红笔接地/KΩ黑笔接地/KΩ1伴音中频输入010142外部中频输入3.310143～4空－－－5PLL琐相环滤波2.59.5136视频信号输出3.210127I2C时钟线36.2514.68I2C数据线2.76.05149滤波去耦6.7911.510色度信号输入1101311Y/CVBS信号输入3.4101312供电电源8.21113全电视信号输入3.6101414地00015音频输出3101416SECAM去耦0  17外部视频输入3.4101318黑电平检测输入5.99.513.519B输出3.577.220G输出3.577.221R输出3.577.222束流检测39.214.523R输入0.31013.524G输入0.31013.525B输入0.31013.526字符消隐输入0.20.80.827亮度信号输入0.59.71428亮度信号输出2.9101429（B-Y）输出2.3101430（R-Y）输出2.2101431（B-Y）输入01013.532（R-Y）输入01013.533副载波输出4.39.2514343.58MHz晶振2.69.813.5354.43MHz晶振2.69.813.736色同步相位检波3.79.813.537供电8.21138视频信号输出3.29.81439数字滤波56.513.540外输出0.81.21.241沙堡出/逆程入0.691342相位2滤波3.19.513.543相位1滤波2.69.513.544地00045东/西枕校输出3.39.513.746场激励正输出1.39.51247场激励负输出1.39.51248中频差分输入4.681349中频差分输入4.681350EHT补偿/过压保护输入1.98.512.251场锯齿波形成2.79.813.752参考电流输入4101353中频AGC去耦4.39.813.554高放AGC输出69.21655音频去加重39.813.556伴音解调去耦3.29.81411