OVS在第15、16頁有解釋,看你 I2C 上的 R side 電壓選擇去。 7 n9 u& Y3 g# c' l: f; U: E' W+ M0 c; r( X2 b
PRE 是 TMDS Output de-emphasis adjustment ,可以先預留2個電阻,上拉和下拉電阻,等調適的時候看看哪個效果好,再決定。- D1 C# a# U. }* ^4 K6 Z
原文在第15頁。節錄於下方。 6 |, |+ j# s' T3 Z2 Y2 V' B3 U$ J4 ?The PRE pin provides 3dB de-emphasis, allowing output signal pre-conditioning to offset interconnect losses from the TMDS141 outputs to a TMDS receiver. PRE is recommended to be set low while connecting to a receiver throw short PCB route.