PT8528为VGA转换IC，可以输出数字和模拟VGA信号，最高输出分辩率1600*1200，同时带OSD和内部MCU，此代码可实现PT8528的全部功能。-PT8528 to VGA converter IC, can output digital and analog VGA signals, the maximum output of Resolution 1600* 1200, while with OSD and intern