Sega Dreamcast A/V

(Difference between revisions)

Latest revision as of 17:24, 21 June 2007

Available at Sega Dreamcast.

Pin	Description
1	Ground
2	Right Audio
3	Left Audio
4	+12 VDC
5	+5 VDC
6	31kHz (VGA) select (active low) (Connected to PORT9 on CPU)
7	RGB select (active low) (Connected to PORT8 on CPU)
8	Vertical Sync (for VGA)
9	Horizontal Sync (for VGA)
10	Composite Sync
11	S-video Chrominance (C)
12	S-video Luminance (Y)
13	Composite Video
14	Blue ¹⁾
15	Green ¹⁾
16	Red ¹⁾

Note: ¹⁾ connect in series with 220µF coupling capacitors.

Pin 6	Pin 7	Description
GND	GND	31 kHz RGB (VGA rate)
GND	n/c	n/a
n/c	GND	15 kHz RGB (TV rate)
n/c	n/c	15 kHz S-Video/Composite video (TV rate)

@@ Line 18: / Line 18: @@
 | 5   || +5 VDC
 |-
-| 6   || Mode 1
+| 6   || 31kHz (VGA) select (active low) (Connected to PORT9 on CPU)
 |-
-| 7   || Mode 2
+| 7   || RGB select (active low) (Connected to PORT8 on CPU)
 |-
 | 8   || Vertical Sync (for VGA)
@@ Line 41: / Line 41: @@
 |}
-''Note: <sup>1)</sup> use coupling capacitors, see below.
+''Note: <sup>1)</sup> connect in series with 220µF [[Capacitive coupling|coupling capacitors]].
 {| {{border}}
-! Mode 1 !! Mode 2 !! Description
+! Pin 6  !! Pin 7  !! Description
 |-
 | GND    || GND    || 31 kHz RGB (VGA rate)
 |-
-| GND    || n/c    || 15 kHz RGB (TV rate) ??
+| GND    || n/c    || n/a
 |-
 | n/c    || GND    || 15 kHz RGB (TV rate)
+|-
+| n/c    || n/c    || 15 kHz S-Video/Composite video (TV rate)
 |}
-== Output chip ==
-RGB signals should be connected in series with 220µF [[Coupling capacitors|coupling capacitors]].
 == Contributions ==
@@ Line 63: / Line 62: @@
 == Sources ==
 * [http://www.gamesx.com/wiki/doku.php?id=av:dreamcastav GameSX Wiki: Dreamcast AV Connector]
+* [http://mc.pp.se/dc/vgabox.html Dreamcast Programming: VGA box] by Marcus Comstedt
 [[Category:Connector]]
 [[Category:Audio Video]]
 [[Category:Obsolete]]