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Table of Contents
Nintendo GameCube Digital AV Connector
The DigitalAV connector carries digital sound and digital component video. Neither signal is useful by itself; the Nintendo component cable converts the digital to analogue component, and a chip is required to convert the digital audio to a usable format (TOSlink, etc). Special thanks to Oscar for this information.
There are other pages detailing the GameCube RGB + VGA and Digital Audio mods on this wiki.
Caveats
- Most GameCubes have the digital connector, however to reduce costs Nintendo removed the port from newer systems. Nintendo will add the port to your GameCube if you call and ask them about it.
- The GameCube is capable of creating a progressive signal, however the software must support it. No PAL software utilizes the progressive capability of the hardware (so no VGA either).
The Connector
| GameCube Digital Connector | |||
|---|---|---|---|
| Pin | Signal | Pin | Signal |
| 1 | DetectCable (pull high) | 2 | 54MHz Clock |
| 3 | ClkSelect(C10) | 4 | GND |
| 5 | +12V | 6 | 27Mhz Clock |
| 7 | Data0 (C09) | 8 | GND |
| 9 | Data1 (C08) | 10 | Data2 (C07) |
| 11 | GND | 12 | Data3 (C06) |
| 13 | Data4 (C04) | 14 | GND |
| 15 | Data5 (C03) | 16 | Data6 (C02) |
| 17 | 3.3v | 18 | Data7 (C01) |
| 19 | LRCK (Audio) | 20 | GND |
| 21 | Data (Audio) | 22 | BCK (Audio) |
| Note: (Cxx) = Chip pin # | |||
Video is sent as 4:2:2 YCrCb component.
<Y><Cr><Y><Cb><Y><Cr><Y><Cb>
Y is set to 0 during blanking intervals, and Cr/Cb packets are used to transmit sync and flag information.
The Flags
| Flags | |||
|---|---|---|---|
| Bit | Flag | description | options |
| 0 | I | Interlaced Flag | 0 = Interlaced, 1 = Non-Interlaced |
| 1 | M | Screen Mode Flag | 0 = NTSC, 1 = PAL |
| 2 | K | Color Burst Blanking Flag | 0 = Color Burst Should be Blanked Out |
| 3 | B | Color Burst Flag | 0 = Indicates location of Color Burst |
| 4 | H | Horizontal Sync | 0 = Horizontal Sync Active |
| 5 | V | Vertical Sync | 0 = Verical Sync Active |
| 6 | F | Field | 0 = Odd Field, 1 = Even Field |
| 7 | C | Composite Sync | 0 = Composite Sync Active |
The CMPV-DOL Chip
This is the chip used in the official Nintendo component cables. It's made by Macronix, but is only made for Nintendo and Macronix won't divulge its secrets. The image below shows a cable with the RGB mod applied, hence the RGB select wire on pin 12, and the H/V Sync on pins 21 + 22.
| GameCube Digital Connector | |||
|---|---|---|---|
| Pin | Signal | Pin | Signal |
| 1 | Data | 2 | Data |
| 3 | Data | 4 | Data |
| 5 | 3.3V | 6 | Data |
| 7 | Data | 8 | Data |
| 9 | Data | 10 | Data |
| 11 | 50MHz Clock | 12 | GND |
| 13 | * | 14 | * |
| 15 | R-Y | 16 | GND |
| 17 | B-Y | 18 | 3.3V |
| 19 | Y | 20 | SENS |
| 21 | H-Sync | 22 | V-Sync |
| 23 | GND | 24 | GND |
| *1.2V Compensation or Filter?? | |||