OVS在第15、16頁有解釋,看你 I2C 上的 R side 電壓選擇去。 / Z7 }$ W( A8 P( H1 g& _$ W0 j' I! m& ]7 W$ H. [/ T" H5 W
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。9 R; e% c" }5 _
原文在第15頁。節錄於下方。 0 m4 c& }5 }, D! C* ~4 hThe 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.