LT8641UXE_HDMI_4_TO_1_Board
Design Guide_V1
Lontium Internal Confidential
1 前言 (Preface)
LT8641UXE 可以做四路 HDMI(DVI)输入,一路 HDMI(DVI)输出的分配器产品,其
中 HDMI 最高分辨率支持到 4K@60Hz。
(LT8641UXE can do four HDMI (DVI) input one HDMI (DVI) output splitter products,
HDMI highest resolution support to 4K@60Hz.)
本文档描述在用 LT8641UXE 设计中关键电路的要求及参考,以减小设计风险,请务必遵
守。
(This document describes in detail the requirements and references of key circuits in
LT8641UXE design, in order to reduce design risks, please be sure to comply with them.)
2 原理图设计 (schematic design)
2.1 HDMI 信号设计 (HDMI Signal Design)
HDMI 输入端 RX_SCL 、RX_SDA 需要接 4.7K 上拉电阻到 PORT5V,RX_HPD 需要接
1K 上拉电阻到 5V。若 HDMI 输入端信号来自上一级芯片,且在同一块板子上,
RX_SCL、RX_SDA 、RX_HPD 也需要接上拉电阻。
(HDMI input RX_SCL, RX_SDA need to connect 4.7K pull-up resistance to PORT5V,
RX_HPD need to connect 1K pull-up resistance to 5V .If the input signal of HDMI
comes from the upper chip and is on the same board, RX_SCL, RX_SDA and RX_HPD
also need to be connected with pull-up resistance.)
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