pi3hdmi301
3:1 Active Switch for HDMI™ Signals with Optimized
3:1主动开关HDMI™信号优化
Equalization for Enhanced Signal Integrity
增强信号完整性的均衡
Features
特征
• Supply voltage, VDD = 3.3V ±5%
•电源电压VDD = 3.3v±5%
• Each of the three input ports can support HDMI™ or DVI
•每三个输入端口可以支持HDMI或DVI™
signals
信号
• Supports both AC-coupled and DC-coupled inputs
•支持交流耦合和直流耦合输入
• Supports DeepColor™
•支持深色效果的™
• High Performance, up to 2.5 Gbps per channel
•高性能，高达2.5 Gbps每通道
• Switching support for 3 side band signals
•开关支持3边带信号
(SCL, SDA and HPD)
（SCL，SDA和HPD）
• 5V Tolerance on all side band signals
•5V容许所有的边带信号
• SCL, SDA, and HPD pins are the only pins that can support
•SCL，SDA，和HPD引脚是唯一能支撑脚
HOT INSERTION
热插拔
• Integrated 50-ohm (±10%) termination resistors at each high
•集成50欧姆（每端高达10%Ω）终止电
speed signal input
速度信号输入
• TMDS input termination control on all high speed inputs
•TMDS输入终端控制所有高速输入
• HDCP reset circuitry for quick communication when
•HDCP复位电路的快速通信时
switching from one port to another
从一个端口切换到另一个端口
• Confi gurable output swing control
•可配置的输出摆幅控制方法
• Confi gurable Pre-Emphasis levels
可配置的预加重•置信水平
• Confi gurable De-Emphasis
•配置重点配置
• Optimized Equalization
•优化均衡
Single default setting will support all cable lengths
单默认设置将支持所有电缆长度
• 8kV Contact ESD protection on all input data/clock channels
•8kV接触ESD保护对所有输入数据/时钟通道
per IEC61000-4-2
每IEC61000 - 4 - 2
• Propagation delay ≤ 2ns
•传播延迟≤2ns
• High Impedance Outputs when disabled
•高阻抗输出时禁用
• Packaging (Pb-free & Green):
•包装（无铅绿色）：
− 80-pin LQFP (FF80)
−80引脚LQFP（ff80）
− 64-pin TQFN (ZL64)
−64引脚TQFN（zl64）
Description
描述
Pericom Semiconductor’s PI3HDMI301 3:1 active switch circuit
百利通半导体的pi3hdmi301 3:1有源开关电路
is targeted for high-resolution video networks that are based
是针对高分辨率视频网络，是基于
on DVI/HDMI™ standards and TMDS signal processing. The
在DVI/HDMI™标准和TMDS信号处理。这个
PI3HDMI301 is an active 3 TMDS to 1 TMDS receiver switch
pi3hdmi301是一个活跃的3个TMD 1 TMDS接收器开关
with Hi-Z outputs. The device receives differential signals from
与高阻抗输出。该设备接收来自
selected video components and drives the video display unit. It
选择视频组件并驱动视频显示单元。它
provides controllable output swings, as well as provides a unique
提供可控的输出摆幅，以及提供了一个独特的
advanced pre-emphasis technique to increase rise and fall times
先进的预加重技术，以提高上升和下降时间
which are reduced during transmission across long distances.
在长距离传输中减少的。
Each complete HDMI/DVI channel also has slower speed, side
每个完整的HDMI / DVI通道还慢的速度，一边
band signals, that are required to be switched. Pericom’s solution
波段信号，需要切换。百利通的解决方案
provides a complete solution by integrating the side band switch
通过集成侧带开关提供了一个完整的解决方案
together with the high speed switch in a single solution. Using
连同高速开关在一个单一的解决方案。使用
Equalization at the input of each of the high speed channels,
在每个高速信道的输入均衡，
Pericom can successfully eliminate deterministic jitter caused by
百利通能够成功消除确定性抖动造成的
long cables from the source to the sink. The elimination of the
从源头到水槽的长电缆。消除
deterministic jitter allows the user to use much longer cables (up
确定性抖动允许用户使用更长的电缆（上）
to 25 meters).
至25米）。
The maximum DVI/HDMIBandwidth of 2.5 Gbps provides 36-bit
最大的DVI / hdmibandwidth 2.5 Gbps的提供36位
Deep Color™ support, which is offered by HDMI™ revision 1.3.
深颜色™支持，并提供HDMI™修订1.3。
Due to its active uni-directional feature, this switch is designed
由于其积极的单向功能，这个开关的设计
for usage only for the video receiver’s side. For consumer video
仅用于视频接收器侧的使用。消费者视频
networks, the device sits at the receiver’s side to switch between
网络中，设备位于接收器侧之间切换
multiple video components, such as PC, DVD, STB, D-VHS,
多个视频组件，如电脑、DVD、机顶盒、D-VHS，
etc. The PI3HDMI301 also provides enhanced robust ESD/EOS
等pi3hdmi301还提供了增强的鲁棒ESD / EOS
protection of 8kV, which is required by many consumer video
保护8kV、这是许多消费者的视频要求
networks today.
网络的今天。
The Optimized Equalization provides the user a single optimal
优化均衡为用户提供了一个单一的
setting that can provide passing results for HDMI jitter tests for
通过设置，可以提供HDMI抖动测试结果
all cable lengths: 1meter to 20meters with DeepColor support up
所有的电缆长度：一20meters与深色效果的支持
to 36bits.
对36bits。
Pericom also offers the ability to fi ne tune the equalization settings
百利通也提供精细的调整均衡设置的能力
in situations where cable length is known. For example, if 25meter
在已知电缆长度的情况下。例如，如果25meter
cable length is required, Pericom's solution can be adjusted to
电缆长度是必需的，百利通的解决方案可以调整
16dB EQ to accept 25meter cable length.
16db情商接受25meter电缆长度。
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