===== The SCART Connector =====
The SCART connector, also known as a Péritel or Euroconnector or, is a multi-function connector that is identical in shape, but not function, to the [[Japanese RGB-21]] connector.  It carries RGB, composite video in and out, and stereo audio in and out.  It can also carry component video and s-video, however these uses are non-standard and aren't supported by all televisions. 

This page deals only with the RGB uses for a SCART display,  A fantastic page detailing all the other uses for a SCART connector can be found [[http://utopia.knoware.nl/users/eprebel/SoundAndVision/Engineering/SCART.html|right here]].

==== The Pinout ====
{{connectors:con-rgb21.gif}}
^ Pin ^ I/O ^ Description ^   Pin ^ I/O ^ Description ^  
|  1  |  O  | Right  |	       2  |  I  | Right  |      
|  3  |  O  | Left/Mono  |    4  |  -  | Audio GND  |  
|  5  |  -  | Blue GND  |     6  |  I  | Left/Mono  |   
|  7  |  I  | Blue  |	       8  |  I  | Select  |       
|  9  |  -  | Green GND  |    10  |  -  | Clock (Not Used)  |  
|  11  |  I  | Green  |       12  |  O  | Data (Not Used)  |     
|  13  |  -  | Red GND  |     14  |  -  | Data GND  |   
|  15  |  I  | Red  |	       16  |  I  | Blanking  |       
|  17  |  -  | Video GND  |   18  |  -  | Blanking GND  | 
|  19  |  O  | Video Out  |   20  |  I  | Video In  | 
|  21  |  -  | Shield/GND  |   |||

  * The numbering is the same on the SCART and RGB-21 connectors
  * Direction is display relative.  In = into display.  Out = out of display.



==== Special Pins ====
Two of the SCART pins are for telling the display which mode and display size to use.  One selects RGB or composite video, the other selects widescreen (16:9) or regular (4:3) aspect ratio.

^ Select (Pin 8) ^^
^ Volts ^ Action ^
|  0-2V  | TV Mode (default) |
|  5-8V  | 16:9 Mode  |
|  9.5-12V  | 4:3 Mode  |

^ Blanking (Pin 16) ^^^
^ Volts ^ Action ^ Pin 20 ^
|  0-0.4V  | Composite Video Mode | Composite Video |
|  1-3V  | RGB Mode | Composite Sync |

  * Not all TVs recognize these signals correctly or at all.
  * Some TVs will not function without these signals. A quick fix can be implemented by using a 9V battery (positive lead on Pin 8, negative lead on any of the grounds) and a 150 Ohms resistor between Pin 8 and Pin 16.
  * Some TVs can be manually forced into these modes.

----
  * Some of this info was taken from other sources:
    * http://www.hardwarebook.net/
    * http://www.idiots.org.uk/vga_rgb_scart/
  * See also:
    * [[wp>scart]] - Wikipedia has a decent summary of the connector's history and other info.