User Guide XB1 COM Express Module
GPIO Usage SIO
XB1 COM Express Module GPIO Usage SIO
GPIO | Type | Tol. | Function | Description |
GPIO 10 | I/O | 5V/16mA 1) | MSDAT | PS/2 mouse data or custom GPIO |
GPIO 11 | I/O | 5V/16mA 1) | MSCLK | PS/2 mouse clock or custom GPIO |
GPIO 12 | O |
| LPC_DRQSIO# | LPC Port DMA request from SIO |
GPIO 13 | I/O | 5V/8mA 1) |
| not used |
GPIO 14 | I/O | 5V/8mA 1) |
| not used |
GPIO 15 | I/O | 5V/8mA 1) |
| not used |
GPIO 16 | I/O | 5V/24mA 1) |
| not used |
GPIO 17 | I/O | 5V/24mA 1) |
| not used |
GPIO 20 | I | 5V 1) | GPI0 | GPI signal from COM Express module carrier board |
GPIO 21 | I | 5V 1) | GPI1 | GPI signal from COM Express module carrier board |
GPIO 22 | I | 5V 1) | GPI2 | GPI signal from COM Express module carrier board |
GPIO 23 | I | 5V 1) | GPI3 | GPI signal from COM Express module carrier board |
GPIO 24 | OC | 10k/3.3V 24mA | GPO0 | GPO signal to COM Express module carrier board |
GPIO 25 | OC | 10k/3.3V 24mA | GPO1 | GPO signal to COM Express module carrier board |
GPIO 26 | OC | 10k/3.3V 24mA | GPO2 | GPO signal to COM Express module carrier board |
GPIO 27 | OC | 10k/3.3V 24mA | GPO3 | GPO signal to COM Express module carrier board |
1)These GPIOs have pullup resistors of approx. 50kΩ within the SIO
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