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 | This article may be too technical for most readers to understand. (March 2024) |
 | |||
 DisplayPort connector | |||
| Type | Digital audio/video connector | ||
|---|---|---|---|
| Production history | |||
| Designer | VESA | ||
| Designed | May 2006 | ||
| Manufacturer | Various | ||
| Produced | 2008–present | ||
| Superseded | DVI, VGA | ||
| Open standard? | No | ||
| General specifications | |||
| Length | Various | ||
| Hot pluggable | Yes | ||
| External | Yes | ||
| Pins | 20 | ||
| Data | |||
| Data signal | Yes | ||
| Bitrate |
| ||
| Protocol | Micro-packet | ||
| Pinout | |||
 | |||
| Pinout as looking at source side connector | |||
| Pin 1 | Main link lane 0 (+) | ||
| Pin 2 | Ground | ||
| Pin 3 | Main link lane 0 (−) | ||
| Pin 4 | Main link lane 1 (+) | ||
| Pin 5 | Ground | ||
| Pin 6 | Main link lane 1 (−) | ||
| Pin 7 | Lane 2 (+) | ||
| Pin 8 | Ground | ||
| Pin 9 | Main link lane 2 (−) | ||
| Pin 10 | Main link lane 3 (+) | ||
| Pin 11 | Ground | ||
| Pin 12 | Main link lane 3 (−) | ||
| Pin 13 | Cable adaptor detect | ||
| Pin 14 | Consumer Electronics Control | ||
| Pin 15 | Auxiliary channel (+) | ||
| Pin 16 | Ground | ||
| Pin 17 | Auxiliary channel (−) | ||
| Pin 18 | Hot plug detect | ||
| Pin 19 | Return for power | ||
| Pin 20 | Power (3.3 V 500 mA) | ||
| This is the pinout on the source side. On the sink side (usually a display), the order is flipped: lane 3 connects to pins 1 and 3, while lane 0 connects to pins 10 and 12. | |||
DisplayPort (DP) is a digital display interface developed by a consortium of PC and chip manufacturers and standardized by the Video Electronics Standards Association (VESA). It is primarily used to connect a video source to a display device such as a computer monitor. It can also carry audio, USB, and other forms of data.[1]
DisplayPort was designed to replace VGA, FPD-Link, and Digital Visual Interface (DVI). It is backward compatible with other interfaces, such as DVI and High-Definition Multimedia Interface (HDMI), through the use of either active or passive adapters.[2]
It is the first display interface to rely on packetized data transmission, a form of digital communication found in technologies such as Ethernet, USB, and PCI Express. It permits the use of internal and external display connections. Unlike legacy standards that transmit a clock signal with each output, its protocol is based on small data packets known as micro packets, which can embed the clock signal in the data stream, allowing higher resolution using fewer pins.[3] The use of data packets also makes it extensible, meaning more features can be added over time without significant changes to the physical interface.[4]
DisplayPort is able to transmit audio and video simultaneously, although each can be transmitted without the other. The video signal path can range from 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.[1] A bidirectional, half-duplex auxiliary channel carries device management and device control data for the Main Link, such as VESA EDID, MCCS, and DPMS standards. The interface is also capable of carrying bidirectional USB signals.[5]
The interface uses a differential signal that is not compatible with DVI or HDMI. However, dual-mode DisplayPort ports are designed to transmit a single-link DVI or HDMI protocol (TMDS) across the interface through the use of an external passive adapter, enabling compatibility mode and converting the signal from 3.3 to 5 volts. For analog VGA/YPbPr and dual-link DVI, a powered active adapter is required for compatibility and does not rely on dual mode. Active VGA adapters are powered directly by the DisplayPort connector, while active dual-link DVI adapters typically rely on an external power source such as USB.
- ^ a b "DisplayPort Technical Overview" (PDF). VESA.org. 10 January 2011. Retrieved 23 January 2012.
- ^ "DisplayPort... the End of an Era, but Beginning of a New Age". Hope Industrial Systems. 27 April 2011. Retrieved 9 March 2012.
- ^ "AMD's Eyefinity Technology Explained". Tom's Hardware. 28 February 2010. Retrieved 23 January 2012.
- ^ "An Inside Look at DisplayPort v1.2". ExtremeTech. 4 February 2011. Retrieved 28 July 2011.
- ^ "The Case For DisplayPort, Continued, And Bezels". Tom's Hardware. 15 April 2010. Retrieved 28 July 2011.
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