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Mainboard: Document pinout to hubboard #15

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Mainboard: Document pinout to hubboard #15

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41 changes: 41 additions & 0 deletions Mainboard/README.md
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# Mainboard

## Hubboard

| Pin | Signal | Type | Notes |
|-----|----------|----------------------|-------------------------------|
| 1 | 5VS_SW | USB Power | Controlled by EC. |
| 2 | 5VS_SW | USB Power | Turned on if all modules |
| 3 | 5VS_SW | USB Power | are populated. |
| 4 | 5VS_SW | USB Power | |
| 5 | 5VS_SW | USB Power | |
| 6 | GND | | |
| 7 | GND | | |
| 8 | GND | | |
| 9 | MUX_A0 | Mux control 0 | Select which board ID to read |
| 10 | MUX_A1 | Mux control 1 | |
| 11 | MUX_A2 | Mux control 2 | |
| 12 | GND | | |
| 13 | DP_1 | USB Port 1 | |
| 14 | DM_1 | USB Port 1 | |
| 15 | GND | | |
| 16 | DP_2 | USB Port 2 | |
| 17 | DM_2 | USB Port 2 | |
| 18 | GND | | |
| 19 | DP_3 | USB Port 3 | |
| 20 | DM_3 | USB Port 3 | |
| 21 | GND | | |
| 22 | DP_4 | USB Port 4 | |
| 23 | DM_4 | USB Port 4 | |
| 24 | GND | | |
| 25 | DP_5 | USB Port 5 | |
| 26 | DM_5 | USB Port 5 | |
| 27 | GND | | |
| 28 | TP_INT_1 | Touchpad Interrupt | On touchpad pogos |
| 29 | TP_INT_2 | Reserved Interrupt | On touchpad pogos |
| 30 | I2C_SDA | Touchpad I2C | On touchpad pogos |
| 31 | I2C_SCL | Touchpad I2C | On touchpad pogos |
| 32 | AGND | Analog ground shield | |
| 33 | GPO_MUX | Analog Mux input | |
| 34 | 3VALW | Analog mux power | |
| 35 | SLEEP# | High S0, else low | |