| 品牌：ALLEGRO MICROSYSTEMS | 型号：PI3HDMI301 | 功率：36W |
1
PS8959B 10/01/09
ADVANCE INFORMATION - COMPANY CONFIDENTIAL
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PI3HDMI301
3:1 Active Switch for HDMI鈩� Signals with Optimized
Equalization for Enhanced Signal Integrity
Features
鈥� Supply voltage, VDD = 3.3V 卤5%
鈥� Each of the three input ports can support HDMI鈩� or DVI signals
鈥� Supports both AC-coupled and DC-coupled inputs 鈥� Supports DeepColor鈩�
鈥� High Performance, up to 2.5 Gbps per channel 鈥� Switching support for 3 side band signals (SCL, SDA and HPD)
鈥� 5V Tolerance on all side band signals
鈥� SCL, SDA, and HPD pins are the only pins that can support HOT INSERTION鈥� Integrated 50-ohm (卤10%) termination resistors at each high speed signal input
鈥� TMDS input termination control on all high speed inputs鈥� HDCP reset circuitry for quick communication when switching from one port to another鈥� Con铿� gurable output swing control 鈥� Con铿� gurable Pre-Emphasis levels 鈥� Con铿� gurable De-Emphasis 鈥� Optimized Equalization
Single default setting will support all cable lengths
鈥� 8kV Contact ESD protection on all input data/clock channels per IEC61000-4-2鈥� Propagation delay 鈮� 2ns
鈥� High Impedance Outputs when disabled 鈥� Packaging (Pb-free & Green): 鈭� 80-pin LQFP (FF80) 鈭� 64-pin TQFN (ZL64)
Description
Pericom Semiconductor鈥檚 PI3HDMI301 3:1 active switch circuit is targeted for high-resolution video networks that are based on DVI/HDMI鈩� standards and TMDS signal processing. The PI3HDMI301 is an active 3 TMDS to 1 TMDS receiver switch with Hi-Z outputs. The device receives differential signals from selected video components and drives the video display unit. It provides controllable output swings, as well as provides a unique advanced pre-emphasis technique to increase rise and fall times which are reduced during transmission across long distances. Each complete HDMI/DVI channel also has slower speed, side band signals, that are required to be switched. Pericom鈥檚 solution provides a complete solution by integrating the side band switch together with the high speed switch in a single solution. Using Equalization at the input of .
