EMMC Tap Points
The CC uses it's EMMC module in 4-line mode. VCCQ and VCC are shorted together to 3.3v. During tapping the MCU must be powered down and/or held reset with the onboard button.
| EMMC Pin | Tap Point | PCB Side | Remarks |
|---|---|---|---|
| VCC/VCCQ | Any 3v3 line, or R28 opposite pad from D3 tap point | ||
| GND | The board's GND | ||
| CMD | R32 | Bottom | The pad next to the "R" |
| CLK | R167 | Bottom | The pad next to the "7" |
| D0 | R51 | BOTTOM | The pad opposite from the text |
| D1 | R53 | Top | the pad closer to the crystal |
| D2 | R52 | Bottom | The pad opposite from the text |
| D3 | R28 | Bottom | The pad toward the text |
Top side traces & tap points
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Credit to thijskunst and rabirx on the OpenCentauri Discord.
Bottom side traces & tap points
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Credit to thijskunst and rabirx on the OpenCentauri Discord.