Interactive Connector Diagram
Click or tap any pin in the diagram below to inspect its signal assignment, electrical specification, and wire colour standard.
Click any pin to view its signal assignment, electrical spec, and wire colour.
Supported Systems / Found On — Retro Machine Hubs
This connector is used on the following retro computer systems. Click any colour-coded badge below to open its full board-level repair, diagnostic, and schematic Machine Hub:
Connector Specifications
Connector Type
DB23 Male on Amiga motherboard (requires DB23 Female cable hood)
Analog Video
0.7 Vpp 75 Ω Analog Red (Pin 3), Green (Pin 4), Blue (Pin 5)
Sync Outputs
TTL /CSYNC (Pin 10), /HSYNC (Pin 11), /VSYNC (Pin 12)
Power Rails
Pin 21 = -5V (10mA), Pin 22 = +12V (100mA), Pin 23 = +5V (100mA)
Full Pin Assignment & Wiring Reference
| Pin | Signal Name | Direction | Electrical Spec / Role | Wire Colour / SCART / Adapter Target |
|---|---|---|---|---|
| 1 | /XCLK | In | External Genlock 28 MHz Clock Input | NC (Genlock only) |
| 2 | /XCLKEN | In | External Genlock Clock Enable (Active Low) | NC (Genlock only) |
| 3 | ANALOG RED | Out | 0.7 Vpp 75 Ω Analog Red Video | SCART Pin 15 (Red Coax) |
| 4 | ANALOG GREEN | Out | 0.7 Vpp 75 Ω Analog Green Video | SCART Pin 11 (Green Coax) |
| 5 | ANALOG BLUE | Out | 0.7 Vpp 75 Ω Analog Blue Video | SCART Pin 7 (Blue Coax) |
| 6 | DI (Intensity) | Out | Digital TTL Intensity (16-colour RGBI mode) | NC for Analog SCART |
| 7 | DB (Dig Blue) | Out | Digital TTL Blue | NC for Analog SCART |
| 8 | DG (Dig Green) | Out | Digital TTL Green | NC for Analog SCART |
| 9 | DR (Dig Red) | Out | Digital TTL Red | NC for Analog SCART |
| 10 | /CSYNC | Out | TTL Composite Sync (~4.5 Vpp — attenuate for SCART!) | SCART Pin 20 via 330–470 Ω resistor |
| 11 | /HSYNC | Out | TTL Horizontal Sync (15.6 kHz — for 1084S / VGA box) | Yellow (RGB Monitors) |
| 12 | /VSYNC | Out | TTL Vertical Sync (50/60 Hz — for 1084S / VGA box) | White (RGB Monitors) |
| 13 | GNDRTN | GND | Digital Sync Ground Return | SCART Pin 17 (Sync GND) |
| 14 | /ZD (ZeroDet) | Out | Genlock Pixel Transparency Detect | NC |
| 15 | /C1 (Clock) | Out | 3.55 MHz Colour Clock Output | NC |
| 16 | GND (Red) | GND | Analog Red Video Ground Return | SCART Pin 13 (Red GND) |
| 17 | GND (Green) | GND | Analog Green Video Ground Return | SCART Pin 9 (Green GND) |
| 18 | GND (Blue) | GND | Analog Blue Video Ground Return | SCART Pin 5 (Blue GND) |
| 19 | GND (Clock) | GND | Genlock / Pixel Clock Ground Return | SCART Pin 18 (Blanking GND) |
| 20 | GND (Video) | GND | Common Video Shield Ground | SCART Pin 21 (Shell GND) |
| 21 | -5V DC | Pwr | -5 V DC Output (10 mA max) | Leave Unconnected |
| 22 | +12V DC | Pwr | +12 V DC Output (100 mA max — 4:3 AV Switch) | SCART Pin 8 (via 1 kΩ resistor) |
| 23 | +5V DC | Pwr | +5 V DC Output (100 mA max — RGB Blanking) | SCART Pin 16 (via 150 Ω resistor) |
Step-by-Step Amiga DB23 to RGB SCART / OSSC / RetroTINK Wiring
Every classic Commodore Amiga (A1000, A500, A500+, A600, A1200, A2000, A3000, A4000, CDTV) outputs native 15.625 kHz (PAL) / 15.734 kHz (NTSC) 0.7 Vpp Analog RGB from the rear 23-pin D-Sub male connector. Because genuine 23-pin female solder cups are rare, many builders neatly trim 2 pins off one end of a common DB25 female connector.
- Analog RGB Lines: Wire DB23 Pin 3 (Red) to SCART Pin 15, DB23 Pin 4 (Green) to SCART Pin 11, and DB23 Pin 5 (Blue) to SCART Pin 7 using individual 75 Ω shielded coax cores (with coax shields tied to DB23 Pins 16, 17, 18 and SCART Pins 13, 9, 5).
- TTL CSYNC Attenuator (Crucial for OSSC / RetroTINK): DB23 Pin 10 (/CSYNC) outputs 5 V TTL sync, whereas SCART Pin 20 expects 0.3–1.0 Vpp 75 Ω video-level sync. Always put a 330 Ω to 470 Ω resistor in series between DB23 Pin 10 and SCART Pin 20!
- RGB Mode Blanking (SCART Pin 16): Wire DB23 Pin 23 (+5 V) through a 150 Ω resistor to SCART Pin 16 (produces ~1.6 V across the TV's 75 Ω termination to force RGB mode).
- Stereo Audio: Connect two RCA plugs from the Amiga's rear Left and Right phono jacks into SCART Pin 6 (Left Audio In), SCART Pin 2 (Right Audio In), and SCART Pin 4 (Audio GND).