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三、模拟量输出方式 M16机心共有十个模拟量输出,除了音量VOL是PWM输出之外,其余九个模拟量都是0～5V直流电压输出,其相应引脚内部都设计有专门的D/A转换器,因而在片内已将“PWM脉冲”经D/A转换器变换为直流电压输出,分别去控制色度、亮度、对比度、清晰度、色调、高音、低音、平衡、环绕效果等,其电路如图5所示。这样,外部不再需要低通滤波器,节省了外围元件,减少了印刷电路板面积,有利于降低成本。
Third, the analog output mode M16 movement of a total of ten analog outputs, in addition to volume VOL is PWM output, the remaining nine analog are 0 ~ 5V DC voltage output, the corresponding pins are designed internally with a dedicated D / A converter, which has been in the chip has been “PWM pulse” by the D / A converter into a DC voltage output, respectively, to control the color, brightness, contrast, sharpness, tone, treble, bass, balance, surround effect Etc., the circuit shown in Figure 5. In this way, the external no longer need low-pass filter, saving peripheral components, reducing the printed circuit board area, help to reduce costs.