User Guide XB1 COM Express Module
XB1 COM Express Module GPIO Usage ICH6
GPIO | Type | Tol. | Function | Description |
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GPI 30 | I | 3.3V | BOARD_CFG2 | Board configuration options line 2 | ||
GPI 31 | I | 3.3V | BOARD_CFG3 | Board configuration options line 3 | ||
GPIO 32 | O | 3.3V |
| not used - open (configured as output by BIOS) | ||
GPIO 33 | O | 3.3V | NC1_OFF# | Enable Ethernet Controller NC1 | ||
GPIO 34 | I/O | 3.3V | ICH_GPIO34 | for future use as PLD control signal (either input or output) | ||
GPI 40 | I | 5V | PG_VR18 | Power Good signal from 1.8V voltage regulator | ||
GPI 41 | I | 3.3V | LPC_DRQCOM# | LPC Port DMA request from COM Express carrier board | ||
GPO 48 | O | 3.3V |
| not used - open |
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GPO 49 | OD | 1.05V | CPU_PWRGD | CPU Power Good signal |
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| italic blue | |||
GPIO Usage FWH |
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| XB1 COM Express Module GPIO Usage FWH | |||
GPIO | Type | Tol. | Function | Description |
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GPI 0 | I | 3.3V | FWH_ID | FWH Identity: Fixed to GND (indicates FWH #1) | ||
GPI 1 | I | 3.3V | IDE_CLBID# | IDE | ||
GPI 2 | I | 3.3V | WDOGRST | Last Hardware Reset caused by watchdog | ||
GPI 3 | I | 3.3V | LSB PCB REV | GPI 4 | GPI 3 | Rev. |
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| 0 | 0 | 0 |
GPI 4 | I | 3.3V | MSB PCB REV | 0 | 1 | 1 |
1 | 0 | 2 | ||||
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| 1 | 1 | 3+ |
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