OVS在第15、16頁有解釋,看你 I2C 上的 R side 電壓選擇去。$ K& D* M1 I2 d, B
$ G5 `# b5 W0 | B" N8 H* t2 tPRE 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。 o/ d; ]$ B$ t' V- F/ v& [0 s) ^ J3 z原文在第15頁。節錄於下方。 ; K! j' y% f" e2 D+ N5 v7 LThe 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.