This document describes an example design that demonstrates Altera DisplayPort Sink (RX) and Source (TX) functions using a video loop-through system. DisplayPort is a next-generation video interface display technology. The Video Electronics Standards Association (VESA) developed the standard as an open digital communication interface for internal chip-to-chip and external box-to-box digital display connections such as:
• Interfaces within a PC or monitor
• Interfaces between a PC and monitor or projector
• Interfaces between a PC and TV
• Interfaces between a device (e.g. DVD player) and TV
DisplayPort uses packetized data transmission and embeds the clock signal in the serial data stream. It can transmit audio, video, or both simultaneously. It also includes a bidirectional, half-duplex auxiliary (AUX) channel for link and device management. The Hot Plug Detect (HPD) causes the DisplayPort source to initiate the link via AUX channel.