5 Hardware extensions
5.2GPIO General Purpose I/O Recommended Use
In general, GPIOs are defined for specific customers. Any generic GPIOs should be be set as well in order to assure compatibility of various COM Express™ compliant modules and carrier boards.
| Pin Description | Recomended Use | Function | Comment |
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GPI0 | General Purpose Input | LID Button | Power Management Event | Please see Board Specification |
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GPI1 | General Purpose Input |
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GPI2 | General Purpose Input |
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GPI3 | General Purpose Input |
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GPO0 | General Purpose Output | Fan Control | TTL output for external fan | Please see Board Specification |
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GPO1 | General Purpose Output |
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GPO2 | General Purpose Output |
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GPO3 | General Purpose Output |
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Copyright © COM Express™ Extension
16
Specification Rev 013