DisplayPort
 
DisplayPort Connector
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| Type | Digital audio/video connector | ||
|---|---|---|---|
| Designer | VESA | ||
| Designed | May 2006 | ||
| Manufacturer | Various | ||
| Produced | Since 2008 | ||
| Superseded | DVI, VGA | ||
| Superseded by | None | ||
| Length | Various | ||
| Hot pluggable | Yes | ||
| External | Yes | ||
| Audio signal | Optional; 1–8 channels, 16 or 24-bit linear PCM; 32–192 kHz sampling rate; maximum bitrate 36,864 kbit/s (4,608 kB/s) | ||
| Video signal | Optional, maximum resolution limited by available bandwidth | ||
| Cable | 3 meters for full bandwidth transmission over passive cable. 33 meters over active cable. |
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| Pins | 20 pins for external connectors on desktops, notebooks, graphics cards, monitors, etc. and 30/20 pins for internal connections between graphics engines and built-in flat panels. | ||
| Signal | +3.3 V | ||
| Max. voltage | 16.0 V | ||
| Max. current | 0.5 A | ||
| Data signal | Yes | ||
| Bitrate | 1.62, 2.7, 5.4, or 8.1 Gbit/s data rate per lane; 1, 2, or 4 lanes; (effective total 5.184, 8.64, 17.28, or 25.92 Gbit/s for 4-lane link); 1 Mbit/s or 720 Mbit/s for the auxiliary channel. | ||
| Protocol | Mini-packet | ||
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| External connector (source-side) on PCB | |||
| Pin 1 | ML_Lane 0 (p) | Lane 0 (positive) | |
| Pin 2 | GND | Ground | |
| Pin 3 | ML_Lane 0 (n) | Lane 0 (negative) | |
| Pin 4 | ML_Lane 1 (p) | Lane 1 (positive) | |
| Pin 5 | GND | Ground | |
| Pin 6 | ML_Lane 1 (n) | Lane 1 (negative) | |
| Pin 7 | ML_Lane 2 (p) | Lane 2 (positive) | |
| Pin 8 | GND | Ground | |
| Pin 9 | ML_Lane 2 (n) | Lane 2 (negative) | |
| Pin 10 | ML_Lane 3 (p) | Lane 3 (positive) | |
| Pin 11 | GND | Ground | |
| Pin 12 | ML_Lane 3 (n) | Lane 3 (negative) | |
| Pin 13 | CONFIG1 | Connected to ground | |
| Pin 14 | CONFIG2 | Connected to ground | |
| Pin 15 | AUX CH (p) | Auxiliary channel (positive) | |
| Pin 16 | GND | Ground | |
| Pin 17 | AUX CH (n) | Auxiliary channel (negative) | |
| Pin 18 | Hot plug | Hot plug detect | |
| Pin 19 | Return | Return for power | |
| Pin 20 | DP_PWR | Power for connector (3.3 V 500 mA) | |
DisplayPort is a digital display interface developed by the Video Electronics Standards Association (VESA). The interface is primarily used to connect a video source to a display device such as a computer monitor, though it can also be used to carry audio, USB, and other forms of data.
VESA designed it to replace VGA, DVI, and FPD-Link. DisplayPort is backwards compatible with VGA, DVI and HDMI through the use of passive and active adapters.
DisplayPort is the first display interface to rely on packetized data transmission, a form of digital communication found in technologies including Ethernet, USB, and PCI Express. It allows both internal and external display connections and, unlike legacy standards where differential pairs are fixed to transmitting a clock signal with each output, the DisplayPort protocol is based on small data packets known as micro packets, which can embed the clock signal within the data stream, allowing higher resolutions with fewer pins. The use of data packets also allows DisplayPort to be extensible, meaning additional features can be added over time without significant changes to the physical interface itself.
DisplayPort can be used to transmit audio and video simultaneously, but each one is optional and can be transmitted without the other. The video signal path can have six to sixteen bits per color channel, and the audio path can have up to eight channels of 24-bit 192 kHz uncompressed PCM audio or can encapsulate compressed audio formats in the audio stream. A bi-directional, half-duplex auxiliary channel carries device management and device control data for the Main Link, such as VESA EDID, MCCS, and DPMS standards. In addition, the interface is capable of carrying bi-directional USB signals.
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Wikipedia