av:dreamcastav
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av:dreamcastav [2005/12/02 08:03] – created 198.209.225.230 | av:dreamcastav [2019/07/27 22:28] – [Mode Selection Signals Chart] Link83 | ||
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- | {{http:// | + | ===== Dreamcast AV Connector ===== |
+ | The Dreamcast connector is a wild, multi-functioned beast. It offers several outputs in the default configuration (Composite and S-Video), and can output two kinds of 15kHz RGB (SCART), as well as 31kHz RGB (VGA) when the proper mode is selected. | ||
- | ^Pin^Description^-^Pin^Description^ | + | {{av: |
- | |1|Ground|-|9|Horizontal Sync (for VGA)| | + | |
- | |2|Right Audio|-|10|Composite Sync| | + | |
- | |3|Left Audio|-|11|S-video| | + | |
- | |4|+12v|-|12|S-video| | + | |
- | |5|+5v|-|13|Composite Video| | + | |
- | |6|31 kHz RGB (VGA) (Connect to GND with pin 7)|-|14|Blue Out (Use 220uf cap)| | + | |
- | |7|15 kHz RGB (TV rate) (Connect to GND)|-|15|Green Out (Use 220uf cap)| | + | |
- | |8|Vertical Sync (for VGA)|-|16|Red Out (Use 220uf cap)| | + | |
- | Note!! Please note that some games will not run with a VGA box, or with the RGB/SCART mod. Most do, however. | + | ^Pin^Description^Pin^Description^ |
+ | | 1 | Ground | ||
+ | | 2 | Right Audio | 10 |Composite Sync| | ||
+ | | 3 | Left Audio | 11 |S-Video Chrominance (C)| | ||
+ | | 4 | +12v | 12 |S-Video Luminance (Y)| | ||
+ | | 5 | +5v | 13 |Composite Video| | ||
+ | | 6 | Mode Select 1 | 14 |Blue Out | | ||
+ | | 7 | Mode Select 2 | 15 |Green Out | | ||
+ | | 8 | Vertical Sync (for VGA) | 16 |Red Out | | ||
+ | |||
+ | ==== Usage Notes ==== | ||
+ | The mode select pins are 6 and 7. Ground either one for two kinds of 15kHz RGB (SCART), ground both for 31kHz RGB (VGA). | ||
+ | |||
+ | You should use a 220uF capacitor on each of the RGB lines (+ towards console). | ||
+ | |||
+ | <box round warning 40% |15kHz/ | ||
+ | |||
+ | If a certain game will not boot in either RGB mode it can sometimes be ' | ||
+ | |||
+ | ==== Mode Selection Signals Chart ==== | ||
+ | When the mode select pins are used certain signal outputs are enabled or disabled: | ||
+ | |||
+ | ^Pin^Description^Standard ' | ||
+ | | 1 | Ground | ||
+ | | 2 | Right Audio | Right Audio | Right Audio | Right Audio | | ||
+ | | 3 | Left Audio | Left Audio | Left Audio | Left Audio | | ||
+ | | 4 | +12v | +12v | +12v | +12v | | ||
+ | | 5 | +5v | +5v | +5v | +5v | | ||
+ | | 6 | Mode Select 1 | Unused | Unused | Grounded | | ||
+ | | 7 | Mode Select 2 | Unused | Grounded | Grounded | | ||
+ | | 8 | Vertical Sync | VSYNC | VSYNC | VSYNC | | ||
+ | | 9 | Horizontal Sync | HSYNC | HSYNC | HSYNC | | ||
+ | | 10 | Composite Sync| ? | CSYNC | Disabled | | ||
+ | | 11 | S-Video Chroma (C)| S-Video Chroma | ? | Disabled | | ||
+ | | 12 | S-Video Luma (Y)| S-Video Luma | ? | Disabled | | ||
+ | | 13 | Composite Video| Composite Video | ? | Disabled | | ||
+ | | 14 | Blue | Disabled | Blue | Blue | | ||
+ | | 15 | Green | Disabled | Green | Green | | ||
+ | | 16 | Red | Disabled | Red | Red | | ||
+ | Note:- The HSYNC and VSYNC signals on the AV port come directly from the Holly GPU, so are likely active in all modes (Even standard ' | ||
+ | |||
+ | ==== Other ==== | ||
+ | [[dreamcastRGB|Ryu' | ||
+ | [[http:// | ||
+ | |||
+ | ---- | ||
+ | See here for the [[http:// |
av/dreamcastav.txt · Last modified: 2019/08/27 20:45 by 127.0.0.1