Mini-DVI
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This article needs references that appear in reliable third-party publications. Primary sources or sources affiliated with the subject are generally not sufficient for a Wikipedia article. Please add more appropriate citations from reliable sources. (November 2009) |
| Mini-DVI | ||
|---|---|---|
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| The Mini-DVI plug on a 12-inch PowerBook G4 | ||
| Type | Digital and analog computer video connector | |
| Production history | ||
| Designer | Apple Inc. | |
| Manufacturer | Apple Inc. | |
| Superseded | Mini-VGA | |
| Superseded by | Mini DisplayPort (October 2008) | |
| Specifications | ||
| External | yes | |
| Video signal | As DVI | |
| Pins | 32 | |
| Pin out | ||
 A female mini-DVI socket |
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| Pin 1 | Dat2_P | Data 2 + |
| Pin 2 | Dat2_N | Data 2 - |
| Pin 3 | Dat1_P | Data 1 + |
| Pin 4 | Dat1_N | Data 1 - |
| Pin 5 | Dat0_P | Data 0 + |
| Pin 6 | Dat0_N | Data 0 - |
| Pin 7 | CLK_P | Clock + |
| Pin 8 | CLK_N | Clock - |
| Pin 9 | DGND | |
| Pin 10 | DGND | |
| Pin 11 | DGND | |
| Pin 12 | DGND | |
| Pin 13 | DGND | |
| Pin 14 | DGND | |
| Pin 15 | DGND | |
| Pin 16 | DGND | |
| Pin 17 | +5 V | |
| Pin 18 | DCC_DAT | |
| Pin 19 | spare | |
| Pin 20 | BLUE | Analogue blue |
| Pin 21 | not installed | |
| Pin 22 | GREEN | Analogue green |
| Pin 23 | not installed | |
| Pin 24 | RED | Analogue red |
| Pin 25 | Detect | |
| Pin 26 | DCC_CLK | |
| Pin 27 | spare | |
| Pin 28 | DGND | |
| Pin 29 | HSYNC | Horizontal sync |
| Pin 30 | DGND | |
| Pin 31 | VSYNC | Vertical sync |
| Pin 32 | DGND | |
The Mini-DVI connector is used on Apple computers as a digital alternative to the Mini-VGA connector. In October 2008, Apple announced the company was phasing it out in favor of Mini DisplayPort. Its size is between the full-sized DVI and the tiny Micro-DVI. It is found on the 12-inch PowerBook G4, Intel-based iMac, the MacBook Intel-based laptop, the Intel-based Xserve, and the 2009 Mac mini. Mini-DVI connectors on Apple hardware are capable of carrying DVI, VGA, or TV signals through the use of adapters, detected with EDID (Extended display identification data) via DDC. This connector is often used in place of a DVI connector in order to save physical space on devices. It needs a Mini-DVI Adapter to connect to another monitor. Mini-DVI does not support dual-link connections and hence cannot support resolutions higher than 1920x1200 @60Hz.
There are various types of Mini-DVI Adapter:
- Apple Mini-DVI to VGA Adapter Apple part# (M9320G/A)
- Apple Mini-DVI to Video Adapter Apple part# (M9319G/A)
- Apple Mini-DVI to DVI Adapter (DVI-D) Apple part# (M9321G/B)
A Mini-DVI to HDMI Adapter is also available but not from Apple.
The physical connector is similar to Mini-VGA, but is differentiated by having four rows of pins arranged in two vertically-stacked slots rather than the two rows of pins in the Mini-VGA.
To use a DVI-I connector, you must connect a Mini-DVI to DVI-D cable to a DVI-D to DVI-I adapter.
[edit] Criticisms
- Apple's Mini-DVI to DVI-D cable does not carry the analog signal coming from the mini-DVI port on the Apple computer. This means that instead of buying a single mini-DVI cable from Apple and using a cheap DVI-to-VGA adaptor when you need VGA output, you must purchase a mini-DVI to VGA cable from Apple. This could be solved if Apple provided a mini-DVI to DVI-I cable. The purpose of DVI-I is to ensure universal compatibility.[1][2]
- Apple mini-DVI to DVI-D cable's package shows a DVI-I figure instead of DVI-D and does not specify that it comes with only DVI-D.
[edit] See also
[edit] External links
- ^ "Blog explaining the difference". http://bitguru.wordpress.com/2008/01/15/mini-dvi-to-dvi-adapters-and-anagolg-signals/. Retrieved 2009-10-11.
- ^ "Image showing the difference". http://g-ecx.images-amazon.com/images/G/01/ciu/6c/bf/01e0228348a0b3483ebe0110.L.jpg. Retrieved 2009-10-11.
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