国产LT8631UX HDMI2.0 视频切换高清分辨率3进1出切换方案

1.说明

Lontium LT8631UX HDMI2.0 / 1.4开关具有符合HDMI2.0 / 1.4规格的3：1开关，最大6Gbps高速数据速率，自适应均衡RX输入和预加重TX输出，以支持长电缆应用，板上没有XTAL以节省BOM成本。

LT8631UX HDMI2.0 / 1.4开关自动检测电缆损耗，并自适应优化均衡设置。它支持RX终端电阻校准，以进一步改善信号完整性。

LT8631UX支持符合HDMI2.0 / 1.4规范的DDC / SCDC。集成的DDC和HPD交换机进一步降低了系统制造成本，并简化了系统板上的布线。此封装为QFN64。它的工作温度范围为−40°C至+ 85°C。

2.功能

•3输入，1输出HDMI / DVIlinks

•兼容HDMI 1.4 / 2.0 / DVI 1.0 

•支持最高6Gbps的数据速率

•RX侧ODT和管理电路

•集成的HPD开关，DDC开关和+ 5V电源指示器开关，大大降低了成本并简化了制造过程

•信号源/接收器连接检测，可实现灵活的系统管理

•支持I2C控制

•低抖动添加

•5V耐压DDC接口

•无需外部晶体

•自适应均衡

•SCDC监视器

3.应用

•用于高级电视机（HDTV）的前面板缓冲器

•独立切换台

•多输入显示

•投影仪

1. Description

The Lontium LT8631UX HDMI2.0/1.4 Switch features a 3:1 switch compliant to HDMI2.0/1.4 specification, max 6Gbps high speed data rate, adaptive equalization RX input and pre-emphasized TX output to support long cable application, no XTAL on board to save BOM cost .

LT8631UX HDMI2.0/1.4 Switch automatically detectsthe cable loss, and adaptively optimize the equalization setting. It supports RX termination resistor calibration to further improve signal integrity.

LT8631UX support DDC/SCDC compliant to HDMI2.0/1.4 specification. The integrated DDC and HPD switches further lower the cost of system manufacture, and simplify the routing on the system board.This package is QFN64. It  operate from −40°C to +85°C.

2. Features

• 3 inputs, 1output HDMI/DVIlinks

• HDMI 1.4/2.0/DVI 1.0compliant

• Supports data rates up to 6Gbps

• RX side ODTs and management circuitry

• Integrated HPD switch, DDC switch, and +5V Power indicator switch, greatly lowering the cost and simplifying the manufacturing process

• Source/Sink connection detection for flexible system management

• I2C control supported

• Low added jitter

• 5V-tolerant DDC interfaces

• No external crystal is needed

• Adaptive equalization

• SCDC monitor

3. Application

• Front panel buffer for advanced television (HDTV) sets

• Standalone switcher

• Multiple input displays

• Projectors

• A/V receivers​