Altera DisplayPort MegaCore Function - Manual (Page 17)

DisplayPort Source
4
2015.05.04
UG-01131 Subscribe
Send Feedback
Source Overview
The DisplayPort source has a scalable main link with 1, 2, or 4 lanes for a total up to 21.6 Gbps bandwidth.
A bidirectional AUX channel with 1 Mbps Manchester encoding provides side-band communication.
Figure 4-1: DisplayPort Source
Source
Lane 0 Data (1.62, 2.7, or 5.4 Gbps)
Lane 1 Data (1.62, 2.7, or 5.4 Gbps)
Lane 2 Data (1.62, 2.7, or 5.4 Gbps)
Lane 3 Data (1.62, 2.7, or 5.4 Gbps)
AUX Channel (1 Mbps)
Hot Plug Detect
Sink
The main link has three selectable data rates: 1.62, 2.7, and 5.4 Gbps. The source device sets the lane count
and link rate combination (referred to as the policy) according to the sink’s capabilities and required
video bandwidth. The IP core transmits the video and audio streams on the main link with embedded
clocking.
The IP core transmits data in a scrambled ANSI 8B/10B format. The data transmission includes
redundancy for error detection. The secondary data stream, such as an audio stream, uses a Reed-
Solomon encoder for error correction.
The AUX channel is an AC-coupled differential pair for bidirectional communication. The signaling is a
self-clocked Manchester encoding at 1 Mbps. As in the 100-T Ethernet protocol, the encoder uses a
preceding synchronization pattern in each 16-byte maximum packet.
The AUX channel uses a master-slave hierarchy in which the source (master) initiates all communication.
© 2015 Altera Corporation. All rights reserved. ALTERA, ARRIA, CYCLONE, ENPIRION, MAX, MEGACORE, NIOS, QUARTUS and STRATIX words and logos are
trademarks of Altera Corporation and registered in the U.S. Patent and Trademark Office and in other countries. All other words and logos identified as
trademarks or service marks are the property of their respective holders as described at www.altera.com/common/legal.html . Altera warrants performance
of its semiconductor products to current specifications in accordance with Altera's standard warranty, but reserves the right to make changes to any
products and services at any time without notice. Altera assumes no responsibility or liability arising out of the application or use of any information,
product, or service described herein except as expressly agreed to in writing by Altera. Altera customers are advised to obtain the latest version of device
specifications before relying on any published information and before placing orders for products or services.
ISO
9001:2008
Registered
www.altera.com
101 Innovation Drive, San Jose, CA 95134