參與:2追蹤:0
我想请教一下，芯片的供电是取HDMI的18引脚的5V进行供电的呢
麻烦看到回复一下哦，谢谢！
0得分
最佳解
<p>A Category 3 Cable Assembly shall not draw more than 55 mA from a Source, even when connected to a Sink that is <br>drawing the permitted maximum of 50 mA on its +5V Power pin. </p><p>按规范里面定义，正常的source不能满足芯片的功耗。需要外加电源。</p>
1F
