1. 一般的描述
LT8631SX是3端口HDMI/DVI开关，可以将多个HDMI/DVI源设备连接到高清电视(HDTV)。基于cleararedge技术，它符合HDMI 1.4/DVI 1.0规范。LT8631SX是一种先进的高速开关，为制造商提供了一种经济有效的方法，为他们的HDTV添加额外的HDMI/DVI端口。多个HDMI/DVI端口允许消费者连接各种HDMI/DVI源到他们的HDTV。
LT8631SX是一个3比1(3:1)的开关，非常适合用于高清电视和a /V接收器的后面板，允许消费者连接多个HDMI/DVI设备，如高清DVD播放器，机顶盒和游戏机。LT8631SX交换机从三个接收端口选择一个单一的HDMI/DVI信号，并产生完全兼容的HDMI//DVI音频/视频输出，以及完全符合HDMI/DVI规格的DDC和HPD切换。
该芯片还集成了RX侧模切终端(ODT)，并采用ODT管理电路，以提高系统设计的成本效益和性能。DDC与HPD交换机的集成进一步降低了系统制造成本，简化了系统板上的布线。
2. 特性
?3输入，1输出HDMI/DVI链路
?兼容HDMI 1.4/DVI 1.0
?支持高达3.4Gbps的数据速率
?支持深颜色
?RX侧odt和管理电路
?集成HPD开关、DDC开关、+5V电源指示灯开关，大大降低成本，简化制造工艺
?源/Sink连接检测，灵活的系统管理
支持I2C控制
?低附加抖动
?单路3.3V电源
?允许5v电压的DDC接口
?HPD、DDC、数据/时钟通道ESD保护级别符合JESD22-A114-B的3A级。
3.应用程序
?高级电视(HDTV)前面板缓冲器
?独立切换器
?多输入显示
?投影仪
?A / V接收器
1. General Description
The LT8631SX is 3-Port HDMI/DVI switch that enable the connection of multiple HDMI/DVI source devICes to high-definition television (HDTV). Based on ClearEdge? Technology, it is compliant with the HDMI 1.4/DVI 1.0 specifications. LT8631SX is an advanced high-speed switch that delivers a cost-effective method for manufacturers to add additional HDMI/DVI ports to their HDTV. Multiple HDMI/DVI ports allow consumers to connect variety HDMI/DVI sources to their HDTV.
The LT8631SX is a three-to-one (3:1) switch ideally suited for use in the back panel of HDTV and A/V receivers, allowing consumers to connect multiple HDMI/DVI devices such as high-definition DVD players, set top boxes and game consoles. The LT8631SX switch selects a single HDMI/DVI signal from the three receiver ports and generates fully compliant HDMI//DVI audio/video output, as well as DDC and HPD switching in full compliance with the HDMI/DVI specifications.
The chip also integrates RX side on-die-terminations (ODTs), and employs the ODT management circuitry for cost-efficient system design and enhanced performance. The integrated DDC and HPD switches further lower the cost of system manufacture, and simplify the routing on the system board.
2. Features
? 3 inputs, 1output HDMI/DVI links
? HDMI 1.4/DVI 1.0 compliant
? Supports data rates up to 3.4Gbps
? Supports deep color
? 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
? Single 3.3V power supply
? 5V-tolerant DDC interfaces
? HPD,DDC,data/clock channels ESD protection level meets class 3A according to JESD22-A114-B.
3. APPLICATIONS
? Front panel buffer for advanced television (HDTV) sets
? Standalone switcher
? Multiple input displays
? Projectors
? A/V receivers
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