The DVI [Digital Visual Interface] is a standard for high-speed,
high-resolution digital displays.
Below is a 24 Pin DVI Female connector
seen at the Computer. The connector diagram and pin-out table show a
DVI-I Digital and Analog [RGB]; 29 pins [modified D style] connector. A
DVI-D Digital only connector with 24 pins [modified D style] looks about
the same with out the 4 analog 'C' pins.
The DVI interface is found on a number of devices including TVs,
Computers, Monitors, and Video cards.
Digital Visual Interface [DVI] was developed by the Digital Display Working
Note that the Digital Display Working
Group disbanded around 2006, so don't expect an up-grade for DVI.
Digital Video Broadcasting/Digital Audio-Visual Council (DVB/DAVIC),
developed by DAVIC [inactive] and DVB [dvb.org].
Adopted by European Telecommunication
Standards Institute (ETSI) and
International Telecommunication Union
DVI has a number of different types connectors:
DVI-D Digital only connector; 24 pins [modified D style];
DVI-A Analog only; [modified D style], I don't think this is part
of the standard
DVI-I Digital and Analog [RGB]; 29 pins [modified D style]
DFP Digital Flat Panel, Digital only connector. Pinout is listed
on the DFP page
Styles of DVI Connectors
DVI Connector Manufacturers
Belkin DVI Connector, DVI Adapter, DVI Cable
Molex DVI Adapter, DVI Cable
TI offers the PanelBus chips solutions
Kycon Inc. DVI Connectors
Foxconn Type D, Type I DVI Connector
DVI Pinout Table
29-Pin DVI Connector
29 pin DVI Connector PinOut and Signal Names
||TMDS Data2/4 Shield
||TMDS Data1/3 Shield
||TMDS Data0/5 Shield
||DDC Clock [SCL]
||+5 V Power
||TMDS Clock Shield
||DDC Data [SDA]
||Ground (for +5 V)
||TMDS Clock +
||Analog vertical sync
||Hot Plug Detect
||TMDS Clock -
||Analog Horizontal Sync
||Analog GND Return: (analog R, G, B)
The pinout table above provides the pin out for a DVI-I connector,
supporting both digital and analog signals. Single Link DVI uses 12 of
the available pins providing a maximum bandwidth of 165MHz. Single Link
connectors do not use pins 4, 5, 12, 13, 20 and 21. Dual link DVI is
implemented when all 24 pins are used providing 2 x 165MHz bandwidth. The
analog signal are implemented by the 'micro-cross' pins; C1 - C5.
The DDC interface pins use the I2C interface bus, as DDC
Data for SDA, and DDC Clock as SCL.
TMDS; Transition Minimized Differential Signaling
The DVI-I connector may be used with a VGA connector by way of an adapter,
while the DVI-D [Digital only] is not compatible.
An Apple computer may
have either a DVI connector as described above or a Apple display
connector [ADC] which is an Apple proprietary interface connector.
Of course you would need to check the latest offering to determine the current video output.
As of 2010 the desired video output would be DisplayPort and not DVI [for new gear], or HDMI.
But it would really depends on the monitors being driven by the system.
A related article covers Computer Interfaces.
DVI Search Term Usage between 2004 to 2010
DVI Google Search Trend.
The graph shows the number of people using the search term 'DVI".
The chart shows a steady decline in 'DVI' searches between 2004 and 2010.
The search trend for 'DVI Connector' has a steeper decline.
'DVI pinout' produced no results.
However the term 'DVI Adapter' shows a small increase in searches.
Indicating that more people are converting older VGAs to DVI connectors.
Back to the main Video Buses page, or the main Personal Computer Interface
Copyright © 1998 - 2012 All rights reserved Leroy Davis