Expansion Connectors
The Odroid-c1 povides one 40-pin dual row expansion header “J2”.
The location and pinout of these connectors is illustrated blew.
All signals on expansion headers are 3.3V except Analog input signal(1.8V).
Built-in pull-up/down resistor value is 60Kohm in the GPIOs.
J2 - 2x20 PINS
| GPIO | wPi | Name | Alternative/ Driving Capability | Mode | V | PU/PD | PIN | PIN | PU/PD | V | Mode | Alternative/ Driving Capability | Name | wPi | GPIO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| - | - | 3.3V | - | - | - | - | 1 | 2 | - | - | - | - | 5.0V | - | - |
| 74 | - | I2CA_SDA | - | IN | 1 | - | 3 | 4 | - | - | - | - | 5.0V | - | - |
| 75 | - | I2CA_SCL | - | IN | 1 | - | 5 | 6 | - | - | - | - | GND | - | - |
| 83 | 7 | GPIOY.3 | -/2mA | IN | 0 | P/U | 7 | 8 | P/U | 1 | ALT1 | - | GPIOX.16 | - | 113 |
| - | - | GND | - | - | - | - | 9 | 10 | P/U | 1 | ALT1 | - | GPIOX.17 | - | 114 |
| 88 | 0 | GPIOY.8 | -/3mA | IN | 1 | P/U | 11 | 12 | P/U | 0 | IN | -/2mA | GPIOY.7 | 1 | 87 |
| 116 | 2 | GPIOX.19 | -/2mA | IN | 1 | P/U | 13 | 14 | - | - | - | - | GND | - | - |
| 115 | 3 | GPIOX.18 | -/2mA | IN | 0 | P/D | 15 | 16 | P/U | 1 | IN | -/3mA | GPIOX.7 | 4 | 104 |
| - | - | 3.3V | - | - | - | - | 17 | 18 | P/U | 1 | IN | -/3mA | GPIOX.5 | 5 | 102 |
| 107 | 12 | GPIOX.10 | PWM1/2mA | IN | 1 | P/U | 19 | 20 | - | - | - | - | GND | - | - |
| 106 | 13 | GPIOX.9 | -/3mA | IN | 1 | P/U | 21 | 22 | P/U | 1 | IN | -/3mA | GPIOX.6 | 6 | 103 |
| 105 | 14 | GPIOX.8 | -/4mA | IN | 1 | P/U | 23 | 24 | P/D | 0 | IN | -/2mA | GPIOX.20 | 10 | 117 |
| - | - | GND | - | - | - | - | 25 | 26 | P/U | 1 | IN | - | GPIOX.21 | 11 | 118 |
| 76 | - | I2CB_SDA | - | IN | 1 | - | 27 | 28 | - | 1 | IN | - | I2CB_SCL | - | 77 |
| 101 | 21 | GPIOX.4 | -/3mA | IN | 1 | P/U | 29 | 30 | - | - | - | - | GND | - | - |
| 100 | 22 | GPIOX.3 | -/3mA | IN | 1 | P/U | 31 | 32 | P/U | 1 | IN | -/3mA | GPIOX.2 | 26 | 99 |
| 108 | 23 | GPIOX.11 | PWM0/3mA | IN | 0 | P/D | 33 | 34 | - | - | - | - | GND | - | - |
| 97 | 24 | GPIOX.0 | -/3mA | IN | 1 | P/U | 35 | 36 | P/U | 1 | IN | -/3mA | GPIOX.1 | 27 | 98 |
| - | - | ADC.AIN0 | 10bit ADC#1(0~1.8V) | - | - | - | 37 | 38 | - | - | - | Output! | 1.8V REF | - | - |
| - | - | GND | - | - | - | - | 39 | 40 | - | - | - | 10bit ADC#0 (0~1.8V) | ADC.AIN1 | - | - |
J7 - 1x7 PINS
This I2S expansion connector exists only on the C1+
| GPIO | Name | Alternative/ Driving Capability | Mode | V | PU/PD | PIN |
|---|---|---|---|---|---|---|
| - | GND | - | - | - | - | 1 |
| 6 | GPIOAO.6 | I2S Data Input/2mA | IN | 0 | - | 2 |
| - | 5.0V | - | - | - | - | 3 |
| 8 | GPIOAO.8 | I2S MCLK/2mA | ALT2 | 0 | P/U | 4 |
| 10 | GPIOAO.10 | I2S LRCLK/2mA | ALT2 | 0 | P/U | 5 |
| 9 | GPIOAO.9 | I2S SCLK/2mA | ALT2 | 0 | P/U | 6 |
| 11 | GPIOAO.11 | I2S Data output/2mA | ALT2 | 0 | P/U | 7 |
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